diff --git a/AK/SourceLocation.h b/AK/SourceLocation.h
index 54bd62fdcf0..8e1a2a5dcb2 100644
--- a/AK/SourceLocation.h
+++ b/AK/SourceLocation.h
@@ -16,7 +16,7 @@ namespace AK {
 class SourceLocation {
 public:
     [[nodiscard]] constexpr StringView function_name() const { return StringView(m_function); }
-    [[nodiscard]] constexpr StringView file_name() const { return StringView(m_file); }
+    [[nodiscard]] constexpr StringView filename() const { return StringView(m_file); }
     [[nodiscard]] constexpr u32 line_number() const { return m_line; }
 
     [[nodiscard]] static constexpr SourceLocation current(const char* const file = __builtin_FILE(), u32 line = __builtin_LINE(), const char* const function = __builtin_FUNCTION())
@@ -45,7 +45,7 @@ template<>
 struct AK::Formatter<AK::SourceLocation> : AK::Formatter<FormatString> {
     void format(FormatBuilder& builder, AK::SourceLocation location)
     {
-        return AK::Formatter<FormatString>::format(builder, "[{} @ {}:{}]", location.function_name(), location.file_name(), location.line_number());
+        return AK::Formatter<FormatString>::format(builder, "[{} @ {}:{}]", location.function_name(), location.filename(), location.line_number());
     }
 };
 
diff --git a/AK/Tests/TestSourceLocation.cpp b/AK/Tests/TestSourceLocation.cpp
index 15910062f33..d770751d1d1 100644
--- a/AK/Tests/TestSourceLocation.cpp
+++ b/AK/Tests/TestSourceLocation.cpp
@@ -13,7 +13,7 @@
 TEST_CASE(basic_scenario)
 {
     auto location = SourceLocation::current();
-    EXPECT_EQ(StringView(__FILE__), location.file_name());
+    EXPECT_EQ(StringView(__FILE__), location.filename());
     EXPECT_EQ(StringView(__FUNCTION__), location.function_name());
     EXPECT_EQ(__LINE__ - 3u, location.line_number());
 }
diff --git a/Kernel/FileSystem/ext2_fs.h b/Kernel/FileSystem/ext2_fs.h
index 6211a485459..2782845cee6 100644
--- a/Kernel/FileSystem/ext2_fs.h
+++ b/Kernel/FileSystem/ext2_fs.h
@@ -664,7 +664,7 @@ struct ext2_dir_entry {
     __u32 inode;              /* Inode number */
     __u16 rec_len;            /* Directory entry length */
     __u16 name_len;           /* Name length */
-    char name[EXT2_NAME_LEN]; /* File name */
+    char name[EXT2_NAME_LEN]; /* Filename */
 };
 
 /*
@@ -678,7 +678,7 @@ struct ext2_dir_entry_2 {
     __u16 rec_len; /* Directory entry length */
     __u8 name_len; /* Name length */
     __u8 file_type;
-    char name[EXT2_NAME_LEN]; /* File name */
+    char name[EXT2_NAME_LEN]; /* Filename */
 };
 
 /*
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index 9a80a6167ba..c1cc4711abf 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -362,7 +362,7 @@ void Thread::finalize()
         ScopedSpinLock list_lock(m_holding_locks_lock);
         for (auto& info : m_holding_locks_list) {
             const auto& location = info.source_location;
-            dbgln(" - Lock: \"{}\" @ {} locked in function \"{}\" at \"{}:{}\" with a count of: {}", info.lock->name(), info.lock, location.function_name(), location.file_name(), location.line_number(), info.count);
+            dbgln(" - Lock: \"{}\" @ {} locked in function \"{}\" at \"{}:{}\" with a count of: {}", info.lock->name(), info.lock, location.function_name(), location.filename(), location.line_number(), info.count);
         }
         VERIFY_NOT_REACHED();
     }
diff --git a/Meta/lint-keymaps.py b/Meta/lint-keymaps.py
index a22258c0ce7..162db782767 100755
--- a/Meta/lint-keymaps.py
+++ b/Meta/lint-keymaps.py
@@ -15,7 +15,7 @@ def report(filename, problem):
     """Print a lint problem to stdout.
 
     Args:
-        filename (str): keymap file name
+        filename (str): keymap filename
         problem (str): problem message
     """
     print('{}: {}'.format(filename, problem))
@@ -25,7 +25,7 @@ def validate_single_map(filename, mapname, values):
     """Validate a key map.
 
     Args:
-        filename (str): keymap file name
+        filename (str): keymap filename
         mapname (str): map name (altgr_map, alt_map, shift_altgr_map)
         values (list): key values
 
@@ -63,7 +63,7 @@ def validate_fullmap(filename, fullmap):
     """Validate a full key map for all map names (including maps for key modifiers).
 
     Args:
-        filename (str): keymap file name
+        filename (str): keymap filename
         fullmap (dict): key mappings
 
     Returns:
@@ -126,7 +126,7 @@ def list_files_here():
     """Retrieve a list of all '.json' files in the working directory.
 
     Returns:
-        list: JSON file names
+        list: JSON filenames
     """
 
     filelist = []
diff --git a/Meta/lint-ports.py b/Meta/lint-ports.py
index 32f4382cd00..be2aa83544a 100755
--- a/Meta/lint-ports.py
+++ b/Meta/lint-ports.py
@@ -31,7 +31,7 @@ def read_port_table(filename):
     """Open a file and find all PORT_TABLE_REGEX matches.
 
     Args:
-        filename (str): file name
+        filename (str): filename
 
     Returns:
         set: all PORT_TABLE_REGEX matches
diff --git a/Userland/Applications/Debugger/main.cpp b/Userland/Applications/Debugger/main.cpp
index 1d4e3469eb0..0f4976d0f94 100644
--- a/Userland/Applications/Debugger/main.cpp
+++ b/Userland/Applications/Debugger/main.cpp
@@ -90,7 +90,7 @@ static bool insert_breakpoint_at_source_position(const String& file, size_t line
         warnln("Could not insert breakpoint at {}:{}", file, line);
         return false;
     }
-    outln("Breakpoint inserted [{}:{} ({}:{:p})]", result.value().file_name, result.value().line_number, result.value().library_name, result.value().address);
+    outln("Breakpoint inserted [{}:{} ({}:{:p})]", result.value().filename, result.value().line_number, result.value().library_name, result.value().address);
     return true;
 }
 
diff --git a/Userland/Applications/FileManager/FileOperationProgressWidget.cpp b/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
index 0f6b84a8aac..8098c98f52c 100644
--- a/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
+++ b/Userland/Applications/FileManager/FileOperationProgressWidget.cpp
@@ -134,14 +134,14 @@ String FileOperationProgressWidget::estimate_time(off_t bytes_done, off_t total_
     return String::formatted("{} hours and {} minutes", hours_remaining, minutes_remaining);
 }
 
-void FileOperationProgressWidget::did_progress(off_t bytes_done, off_t total_byte_count, size_t files_done, size_t total_file_count, [[maybe_unused]] off_t current_file_done, [[maybe_unused]] off_t current_file_size, const StringView& current_file_name)
+void FileOperationProgressWidget::did_progress(off_t bytes_done, off_t total_byte_count, size_t files_done, size_t total_file_count, [[maybe_unused]] off_t current_file_done, [[maybe_unused]] off_t current_file_size, const StringView& current_filename)
 {
     auto& files_copied_label = *find_descendant_of_type_named<GUI::Label>("files_copied_label");
     auto& current_file_label = *find_descendant_of_type_named<GUI::Label>("current_file_label");
     auto& overall_progressbar = *find_descendant_of_type_named<GUI::Progressbar>("overall_progressbar");
     auto& estimated_time_label = *find_descendant_of_type_named<GUI::Label>("estimated_time_label");
 
-    current_file_label.set_text(current_file_name);
+    current_file_label.set_text(current_filename);
 
     files_copied_label.set_text(String::formatted("Copying file {} of {}", files_done, total_file_count));
     estimated_time_label.set_text(estimate_time(bytes_done, total_byte_count));
diff --git a/Userland/Applications/FileManager/FileOperationProgressWidget.h b/Userland/Applications/FileManager/FileOperationProgressWidget.h
index 7a55f5833b9..6f9b6923348 100644
--- a/Userland/Applications/FileManager/FileOperationProgressWidget.h
+++ b/Userland/Applications/FileManager/FileOperationProgressWidget.h
@@ -22,7 +22,7 @@ private:
 
     void did_finish();
     void did_error(String message);
-    void did_progress(off_t bytes_done, off_t total_byte_count, size_t files_done, size_t total_file_count, off_t current_file_done, off_t current_file_size, const StringView& current_file_name);
+    void did_progress(off_t bytes_done, off_t total_byte_count, size_t files_done, size_t total_file_count, off_t current_file_done, off_t current_file_size, const StringView& current_filename);
 
     void close_pipe();
 
diff --git a/Userland/Applications/KeyboardMapper/KeyboardMapperWidget.cpp b/Userland/Applications/KeyboardMapper/KeyboardMapperWidget.cpp
index d85e5c59630..6f72a18e437 100644
--- a/Userland/Applications/KeyboardMapper/KeyboardMapperWidget.cpp
+++ b/Userland/Applications/KeyboardMapper/KeyboardMapperWidget.cpp
@@ -123,12 +123,12 @@ void KeyboardMapperWidget::create_frame()
     bottom_widget.layout()->add_spacer();
 }
 
-void KeyboardMapperWidget::load_from_file(String file_name)
+void KeyboardMapperWidget::load_from_file(String filename)
 {
-    auto result = Keyboard::CharacterMapFile::load_from_file(file_name);
+    auto result = Keyboard::CharacterMapFile::load_from_file(filename);
     VERIFY(result.has_value());
 
-    m_file_name = file_name;
+    m_filename = filename;
     m_character_map = result.value();
     set_current_map("map");
 
@@ -145,7 +145,7 @@ void KeyboardMapperWidget::load_from_system()
     auto result = Keyboard::CharacterMap::fetch_system_map();
     VERIFY(!result.is_error());
 
-    m_file_name = String::formatted("/res/keymaps/{}.json", result.value().character_map_name());
+    m_filename = String::formatted("/res/keymaps/{}.json", result.value().character_map_name());
     m_character_map = result.value().character_map_data();
     set_current_map("map");
 
@@ -159,10 +159,10 @@ void KeyboardMapperWidget::load_from_system()
 
 void KeyboardMapperWidget::save()
 {
-    save_to_file(m_file_name);
+    save_to_file(m_filename);
 }
 
-void KeyboardMapperWidget::save_to_file(const StringView& file_name)
+void KeyboardMapperWidget::save_to_file(const StringView& filename)
 {
     JsonObject map_json;
 
@@ -188,12 +188,12 @@ void KeyboardMapperWidget::save_to_file(const StringView& file_name)
     // Write to file.
     String file_content = map_json.to_string();
 
-    auto file = Core::File::construct(file_name);
+    auto file = Core::File::construct(filename);
     file->open(Core::IODevice::WriteOnly);
     if (!file->is_open()) {
         StringBuilder sb;
         sb.append("Failed to open ");
-        sb.append(file_name);
+        sb.append(filename);
         sb.append(" for write. Error: ");
         sb.append(file->error_string());
 
@@ -213,7 +213,7 @@ void KeyboardMapperWidget::save_to_file(const StringView& file_name)
     }
 
     m_modified = false;
-    m_file_name = file_name;
+    m_filename = filename;
     update_window_title();
 }
 
@@ -274,7 +274,7 @@ void KeyboardMapperWidget::set_current_map(const String current_map)
 void KeyboardMapperWidget::update_window_title()
 {
     StringBuilder sb;
-    sb.append(m_file_name);
+    sb.append(m_filename);
     if (m_modified)
         sb.append(" (*)");
     sb.append(" - KeyboardMapper");
diff --git a/Userland/Applications/KeyboardMapper/KeyboardMapperWidget.h b/Userland/Applications/KeyboardMapper/KeyboardMapperWidget.h
index cdff3cc0744..1c11dc17ca5 100644
--- a/Userland/Applications/KeyboardMapper/KeyboardMapperWidget.h
+++ b/Userland/Applications/KeyboardMapper/KeyboardMapperWidget.h
@@ -34,7 +34,7 @@ private:
     Vector<KeyButton*> m_keys;
     RefPtr<GUI::Widget> m_map_group;
 
-    String m_file_name;
+    String m_filename;
     Keyboard::CharacterMapData m_character_map;
     String m_current_map_name;
     bool m_modified { false };
diff --git a/Userland/Applications/KeyboardSettings/CharacterMapFileListModel.h b/Userland/Applications/KeyboardSettings/CharacterMapFileListModel.h
index d0585e1c46d..2dc6f3df04a 100644
--- a/Userland/Applications/KeyboardSettings/CharacterMapFileListModel.h
+++ b/Userland/Applications/KeyboardSettings/CharacterMapFileListModel.h
@@ -11,16 +11,16 @@
 
 class CharacterMapFileListModel final : public GUI::Model {
 public:
-    static NonnullRefPtr<CharacterMapFileListModel> create(Vector<String>& file_names)
+    static NonnullRefPtr<CharacterMapFileListModel> create(Vector<String>& filenames)
     {
-        return adopt_ref(*new CharacterMapFileListModel(file_names));
+        return adopt_ref(*new CharacterMapFileListModel(filenames));
     }
 
     virtual ~CharacterMapFileListModel() override { }
 
     virtual int row_count(const GUI::ModelIndex&) const override
     {
-        return m_file_names.size();
+        return m_filenames.size();
     }
 
     virtual int column_count(const GUI::ModelIndex&) const override
@@ -34,7 +34,7 @@ public:
         VERIFY(index.column() == 0);
 
         if (role == GUI::ModelRole::Display)
-            return m_file_names.at(index.row());
+            return m_filenames.at(index.row());
 
         return {};
     }
@@ -45,10 +45,10 @@ public:
     }
 
 private:
-    explicit CharacterMapFileListModel(Vector<String>& file_names)
-        : m_file_names(file_names)
+    explicit CharacterMapFileListModel(Vector<String>& filenames)
+        : m_filenames(filenames)
     {
     }
 
-    Vector<String>& m_file_names;
+    Vector<String>& m_filenames;
 };
diff --git a/Userland/Applications/Terminal/main.cpp b/Userland/Applications/Terminal/main.cpp
index 8f733ecdcf4..71b0cc81da3 100644
--- a/Userland/Applications/Terminal/main.cpp
+++ b/Userland/Applications/Terminal/main.cpp
@@ -329,7 +329,7 @@ int main(int argc, char** argv)
     }
 
     RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("Terminal");
-    Core::File::ensure_parent_directories(config->file_name());
+    Core::File::ensure_parent_directories(config->filename());
 
     pid_t shell_pid = 0;
 
@@ -485,7 +485,7 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    if (unveil(config->file_name().characters(), "rwc") < 0) {
+    if (unveil(config->filename().characters(), "rwc") < 0) {
         perror("unveil");
         return 1;
     }
diff --git a/Userland/DevTools/HackStudio/HackStudioWidget.cpp b/Userland/DevTools/HackStudio/HackStudioWidget.cpp
index eacb469d633..0fafe27a983 100644
--- a/Userland/DevTools/HackStudio/HackStudioWidget.cpp
+++ b/Userland/DevTools/HackStudio/HackStudioWidget.cpp
@@ -675,14 +675,14 @@ String HackStudioWidget::get_full_path_of_serenity_source(const String& file)
     return String::formatted("{}/{}", serenity_sources_base, relative_path_builder.to_string());
 }
 
-RefPtr<EditorWrapper> HackStudioWidget::get_editor_of_file(const String& file_name)
+RefPtr<EditorWrapper> HackStudioWidget::get_editor_of_file(const String& filename)
 {
-    String file_path = file_name;
+    String file_path = filename;
 
     // TODO: We can probably do a more specific condition here, something like
     // "if (file.starts_with("../Libraries/") || file.starts_with("../AK/"))"
-    if (file_name.starts_with("../")) {
-        file_path = get_full_path_of_serenity_source(file_name);
+    if (filename.starts_with("../")) {
+        file_path = get_full_path_of_serenity_source(filename);
     }
 
     if (!open_file(file_path))
diff --git a/Userland/DevTools/HackStudio/HackStudioWidget.h b/Userland/DevTools/HackStudio/HackStudioWidget.h
index c3104a66e80..9cf5e8b6d62 100644
--- a/Userland/DevTools/HackStudio/HackStudioWidget.h
+++ b/Userland/DevTools/HackStudio/HackStudioWidget.h
@@ -86,7 +86,7 @@ private:
     NonnullRefPtr<GUI::Action> create_set_autocomplete_mode_action();
 
     void add_new_editor(GUI::Widget& parent);
-    RefPtr<EditorWrapper> get_editor_of_file(const String& file_name);
+    RefPtr<EditorWrapper> get_editor_of_file(const String& filename);
     String get_project_executable_path() const;
 
     void on_action_tab_change();
diff --git a/Userland/DevTools/HackStudio/LanguageServers/ClientConnection.cpp b/Userland/DevTools/HackStudio/LanguageServers/ClientConnection.cpp
index 601ecf307a3..6346f865e36 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/ClientConnection.cpp
+++ b/Userland/DevTools/HackStudio/LanguageServers/ClientConnection.cpp
@@ -46,28 +46,28 @@ OwnPtr<Messages::LanguageServer::GreetResponse> ClientConnection::handle(const M
 
 void ClientConnection::handle(const Messages::LanguageServer::FileOpened& message)
 {
-    if (m_filedb.is_open(message.file_name())) {
+    if (m_filedb.is_open(message.filename())) {
         return;
     }
-    m_filedb.add(message.file_name(), message.file().take_fd());
-    m_autocomplete_engine->file_opened(message.file_name());
+    m_filedb.add(message.filename(), message.file().take_fd());
+    m_autocomplete_engine->file_opened(message.filename());
 }
 
 void ClientConnection::handle(const Messages::LanguageServer::FileEditInsertText& message)
 {
-    dbgln_if(LANGUAGE_SERVER_DEBUG, "InsertText for file: {}", message.file_name());
+    dbgln_if(LANGUAGE_SERVER_DEBUG, "InsertText for file: {}", message.filename());
     dbgln_if(LANGUAGE_SERVER_DEBUG, "Text: {}", message.text());
     dbgln_if(LANGUAGE_SERVER_DEBUG, "[{}:{}]", message.start_line(), message.start_column());
-    m_filedb.on_file_edit_insert_text(message.file_name(), message.text(), message.start_line(), message.start_column());
-    m_autocomplete_engine->on_edit(message.file_name());
+    m_filedb.on_file_edit_insert_text(message.filename(), message.text(), message.start_line(), message.start_column());
+    m_autocomplete_engine->on_edit(message.filename());
 }
 
 void ClientConnection::handle(const Messages::LanguageServer::FileEditRemoveText& message)
 {
-    dbgln_if(LANGUAGE_SERVER_DEBUG, "RemoveText for file: {}", message.file_name());
+    dbgln_if(LANGUAGE_SERVER_DEBUG, "RemoveText for file: {}", message.filename());
     dbgln_if(LANGUAGE_SERVER_DEBUG, "[{}:{} - {}:{}]", message.start_line(), message.start_column(), message.end_line(), message.end_column());
-    m_filedb.on_file_edit_remove_text(message.file_name(), message.start_line(), message.start_column(), message.end_line(), message.end_column());
-    m_autocomplete_engine->on_edit(message.file_name());
+    m_filedb.on_file_edit_remove_text(message.filename(), message.start_line(), message.start_column(), message.end_line(), message.end_column());
+    m_autocomplete_engine->on_edit(message.filename());
 }
 
 void ClientConnection::handle(const Messages::LanguageServer::AutoCompleteSuggestions& message)
@@ -87,17 +87,17 @@ void ClientConnection::handle(const Messages::LanguageServer::AutoCompleteSugges
 
 void ClientConnection::handle(const Messages::LanguageServer::SetFileContent& message)
 {
-    dbgln_if(LANGUAGE_SERVER_DEBUG, "SetFileContent: {}", message.file_name());
-    auto document = m_filedb.get(message.file_name());
+    dbgln_if(LANGUAGE_SERVER_DEBUG, "SetFileContent: {}", message.filename());
+    auto document = m_filedb.get(message.filename());
     if (!document) {
-        m_filedb.add(message.file_name(), message.content());
-        VERIFY(m_filedb.is_open(message.file_name()));
+        m_filedb.add(message.filename(), message.content());
+        VERIFY(m_filedb.is_open(message.filename()));
     } else {
         const auto& content = message.content();
         document->set_text(content.view());
     }
-    VERIFY(m_filedb.is_open(message.file_name()));
-    m_autocomplete_engine->on_edit(message.file_name());
+    VERIFY(m_filedb.is_open(message.filename()));
+    m_autocomplete_engine->on_edit(message.filename());
 }
 
 void ClientConnection::handle(const Messages::LanguageServer::FindDeclaration& message)
diff --git a/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.cpp b/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.cpp
index 29018894ad8..cb5957e121b 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.cpp
+++ b/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.cpp
@@ -337,9 +337,9 @@ void ParserAutoComplete::file_opened([[maybe_unused]] const String& file)
     set_document_data(file, create_document_data_for(file));
 }
 
-Optional<GUI::AutocompleteProvider::ProjectLocation> ParserAutoComplete::find_declaration_of(const String& file_name, const GUI::TextPosition& identifier_position)
+Optional<GUI::AutocompleteProvider::ProjectLocation> ParserAutoComplete::find_declaration_of(const String& filename, const GUI::TextPosition& identifier_position)
 {
-    const auto* document_ptr = get_or_create_document_data(file_name);
+    const auto* document_ptr = get_or_create_document_data(filename);
     if (!document_ptr)
         return {};
 
diff --git a/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.h b/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.h
index f1e8a103f72..5d8c4487dbe 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.h
+++ b/Userland/DevTools/HackStudio/LanguageServers/Cpp/ParserAutoComplete.h
@@ -28,7 +28,7 @@ public:
     virtual Vector<GUI::AutocompleteProvider::Entry> get_suggestions(const String& file, const GUI::TextPosition& autocomplete_position) override;
     virtual void on_edit(const String& file) override;
     virtual void file_opened([[maybe_unused]] const String& file) override;
-    virtual Optional<GUI::AutocompleteProvider::ProjectLocation> find_declaration_of(const String& file_name, const GUI::TextPosition& identifier_position) override;
+    virtual Optional<GUI::AutocompleteProvider::ProjectLocation> find_declaration_of(const String& filename, const GUI::TextPosition& identifier_position) override;
 
 private:
     struct DocumentData {
diff --git a/Userland/DevTools/HackStudio/LanguageServers/FileDB.cpp b/Userland/DevTools/HackStudio/LanguageServers/FileDB.cpp
index 0dc64cb6a35..13f14959fec 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/FileDB.cpp
+++ b/Userland/DevTools/HackStudio/LanguageServers/FileDB.cpp
@@ -11,9 +11,9 @@
 
 namespace LanguageServers {
 
-RefPtr<const GUI::TextDocument> FileDB::get(const String& file_name) const
+RefPtr<const GUI::TextDocument> FileDB::get(const String& filename) const
 {
-    auto absolute_path = to_absolute_path(file_name);
+    auto absolute_path = to_absolute_path(filename);
     auto document_optional = m_open_files.get(absolute_path);
     if (!document_optional.has_value())
         return nullptr;
@@ -21,60 +21,60 @@ RefPtr<const GUI::TextDocument> FileDB::get(const String& file_name) const
     return document_optional.value();
 }
 
-RefPtr<GUI::TextDocument> FileDB::get(const String& file_name)
+RefPtr<GUI::TextDocument> FileDB::get(const String& filename)
 {
-    auto document = reinterpret_cast<const FileDB*>(this)->get(file_name);
+    auto document = reinterpret_cast<const FileDB*>(this)->get(filename);
     if (document.is_null())
         return nullptr;
     return adopt_ref(*const_cast<GUI::TextDocument*>(document.leak_ref()));
 }
 
-RefPtr<const GUI::TextDocument> FileDB::get_or_create_from_filesystem(const String& file_name) const
+RefPtr<const GUI::TextDocument> FileDB::get_or_create_from_filesystem(const String& filename) const
 {
-    auto absolute_path = to_absolute_path(file_name);
+    auto absolute_path = to_absolute_path(filename);
     auto document = get(absolute_path);
     if (document)
         return document;
     return create_from_filesystem(absolute_path);
 }
 
-RefPtr<GUI::TextDocument> FileDB::get_or_create_from_filesystem(const String& file_name)
+RefPtr<GUI::TextDocument> FileDB::get_or_create_from_filesystem(const String& filename)
 {
-    auto document = reinterpret_cast<const FileDB*>(this)->get_or_create_from_filesystem(file_name);
+    auto document = reinterpret_cast<const FileDB*>(this)->get_or_create_from_filesystem(filename);
     if (document.is_null())
         return nullptr;
     return adopt_ref(*const_cast<GUI::TextDocument*>(document.leak_ref()));
 }
 
-bool FileDB::is_open(const String& file_name) const
+bool FileDB::is_open(const String& filename) const
 {
-    return m_open_files.contains(to_absolute_path(file_name));
+    return m_open_files.contains(to_absolute_path(filename));
 }
 
-bool FileDB::add(const String& file_name, int fd)
+bool FileDB::add(const String& filename, int fd)
 {
     auto document = create_from_fd(fd);
     if (!document)
         return false;
 
-    m_open_files.set(to_absolute_path(file_name), document.release_nonnull());
+    m_open_files.set(to_absolute_path(filename), document.release_nonnull());
     return true;
 }
 
-String FileDB::to_absolute_path(const String& file_name) const
+String FileDB::to_absolute_path(const String& filename) const
 {
-    if (LexicalPath { file_name }.is_absolute()) {
-        return file_name;
+    if (LexicalPath { filename }.is_absolute()) {
+        return filename;
     }
     VERIFY(!m_project_root.is_null());
-    return LexicalPath { String::formatted("{}/{}", m_project_root, file_name) }.string();
+    return LexicalPath { String::formatted("{}/{}", m_project_root, filename) }.string();
 }
 
-RefPtr<GUI::TextDocument> FileDB::create_from_filesystem(const String& file_name) const
+RefPtr<GUI::TextDocument> FileDB::create_from_filesystem(const String& filename) const
 {
-    auto file = Core::File::open(to_absolute_path(file_name), Core::IODevice::ReadOnly);
+    auto file = Core::File::open(to_absolute_path(filename), Core::IODevice::ReadOnly);
     if (file.is_error()) {
-        dbgln("failed to create document for {} from filesystem", file_name);
+        dbgln("failed to create document for {} from filesystem", filename);
         return nullptr;
     }
     return create_from_file(*file.value());
@@ -117,10 +117,10 @@ RefPtr<GUI::TextDocument> FileDB::create_from_file(Core::File& file) const
     return document;
 }
 
-void FileDB::on_file_edit_insert_text(const String& file_name, const String& inserted_text, size_t start_line, size_t start_column)
+void FileDB::on_file_edit_insert_text(const String& filename, const String& inserted_text, size_t start_line, size_t start_column)
 {
-    VERIFY(is_open(file_name));
-    auto document = get(file_name);
+    VERIFY(is_open(filename));
+    auto document = get(filename);
     VERIFY(document);
     GUI::TextPosition start_position { start_line, start_column };
     document->insert_at(start_position, inserted_text, &s_default_document_client);
@@ -128,12 +128,12 @@ void FileDB::on_file_edit_insert_text(const String& file_name, const String& ins
     dbgln_if(FILE_CONTENT_DEBUG, "{}", document->text());
 }
 
-void FileDB::on_file_edit_remove_text(const String& file_name, size_t start_line, size_t start_column, size_t end_line, size_t end_column)
+void FileDB::on_file_edit_remove_text(const String& filename, size_t start_line, size_t start_column, size_t end_line, size_t end_column)
 {
     // TODO: If file is not open - need to get its contents
     // Otherwise- somehow verify that respawned language server is synced with all file contents
-    VERIFY(is_open(file_name));
-    auto document = get(file_name);
+    VERIFY(is_open(filename));
+    auto document = get(filename);
     VERIFY(document);
     GUI::TextPosition start_position { start_line, start_column };
     GUI::TextRange range {
@@ -153,7 +153,7 @@ RefPtr<GUI::TextDocument> FileDB::create_with_content(const String& content)
     return document;
 }
 
-bool FileDB::add(const String& file_name, const String& content)
+bool FileDB::add(const String& filename, const String& content)
 {
     auto document = create_with_content(content);
     if (!document) {
@@ -161,7 +161,7 @@ bool FileDB::add(const String& file_name, const String& content)
         return false;
     }
 
-    m_open_files.set(to_absolute_path(file_name), document.release_nonnull());
+    m_open_files.set(to_absolute_path(filename), document.release_nonnull());
     return true;
 }
 
diff --git a/Userland/DevTools/HackStudio/LanguageServers/FileDB.h b/Userland/DevTools/HackStudio/LanguageServers/FileDB.h
index 8c0b6733a18..c3eda1b4610 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/FileDB.h
+++ b/Userland/DevTools/HackStudio/LanguageServers/FileDB.h
@@ -15,22 +15,22 @@ namespace LanguageServers {
 
 class FileDB final {
 public:
-    RefPtr<const GUI::TextDocument> get(const String& file_name) const;
-    RefPtr<GUI::TextDocument> get(const String& file_name);
-    RefPtr<const GUI::TextDocument> get_or_create_from_filesystem(const String& file_name) const;
-    RefPtr<GUI::TextDocument> get_or_create_from_filesystem(const String& file_name);
-    bool add(const String& file_name, int fd);
-    bool add(const String& file_name, const String& content);
+    RefPtr<const GUI::TextDocument> get(const String& filename) const;
+    RefPtr<GUI::TextDocument> get(const String& filename);
+    RefPtr<const GUI::TextDocument> get_or_create_from_filesystem(const String& filename) const;
+    RefPtr<GUI::TextDocument> get_or_create_from_filesystem(const String& filename);
+    bool add(const String& filename, int fd);
+    bool add(const String& filename, const String& content);
 
     void set_project_root(const String& root_path) { m_project_root = root_path; }
 
-    void on_file_edit_insert_text(const String& file_name, const String& inserted_text, size_t start_line, size_t start_column);
-    void on_file_edit_remove_text(const String& file_name, size_t start_line, size_t start_column, size_t end_line, size_t end_column);
-    String to_absolute_path(const String& file_name) const;
-    bool is_open(const String& file_name) const;
+    void on_file_edit_insert_text(const String& filename, const String& inserted_text, size_t start_line, size_t start_column);
+    void on_file_edit_remove_text(const String& filename, size_t start_line, size_t start_column, size_t end_line, size_t end_column);
+    String to_absolute_path(const String& filename) const;
+    bool is_open(const String& filename) const;
 
 private:
-    RefPtr<GUI::TextDocument> create_from_filesystem(const String& file_name) const;
+    RefPtr<GUI::TextDocument> create_from_filesystem(const String& filename) const;
     RefPtr<GUI::TextDocument> create_from_fd(int fd) const;
     RefPtr<GUI::TextDocument> create_from_file(Core::File&) const;
     static RefPtr<GUI::TextDocument> create_with_content(const String&);
diff --git a/Userland/DevTools/HackStudio/LanguageServers/LanguageServer.ipc b/Userland/DevTools/HackStudio/LanguageServers/LanguageServer.ipc
index 938d616be2a..ea3b3b416ed 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/LanguageServer.ipc
+++ b/Userland/DevTools/HackStudio/LanguageServers/LanguageServer.ipc
@@ -2,10 +2,10 @@ endpoint LanguageServer
 {
     Greet(String project_root) => ()
 
-    FileOpened(String file_name, IPC::File file) =|
-    FileEditInsertText(String file_name, String text, i32 start_line, i32 start_column) =|
-    FileEditRemoveText(String file_name, i32 start_line, i32 start_column, i32 end_line, i32 end_column) =|
-    SetFileContent(String file_name, String content) =|
+    FileOpened(String filename, IPC::File file) =|
+    FileEditInsertText(String filename, String text, i32 start_line, i32 start_column) =|
+    FileEditRemoveText(String filename, i32 start_line, i32 start_column, i32 end_line, i32 end_column) =|
+    SetFileContent(String filename, String content) =|
 
     AutoCompleteSuggestions(GUI::AutocompleteProvider::ProjectLocation location) =|
     SetAutoCompleteMode(String mode) =|
diff --git a/Userland/DevTools/HackStudio/LanguageServers/Shell/AutoComplete.cpp b/Userland/DevTools/HackStudio/LanguageServers/Shell/AutoComplete.cpp
index fc00931fa8f..81182db506e 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/Shell/AutoComplete.cpp
+++ b/Userland/DevTools/HackStudio/LanguageServers/Shell/AutoComplete.cpp
@@ -164,10 +164,10 @@ void AutoComplete::file_opened([[maybe_unused]] const String& file)
     set_document_data(file, create_document_data_for(file));
 }
 
-Optional<GUI::AutocompleteProvider::ProjectLocation> AutoComplete::find_declaration_of(const String& file_name, const GUI::TextPosition& identifier_position)
+Optional<GUI::AutocompleteProvider::ProjectLocation> AutoComplete::find_declaration_of(const String& filename, const GUI::TextPosition& identifier_position)
 {
-    dbgln_if(SH_LANGUAGE_SERVER_DEBUG, "find_declaration_of({}, {}:{})", file_name, identifier_position.line(), identifier_position.column());
-    const auto& document = get_or_create_document_data(file_name);
+    dbgln_if(SH_LANGUAGE_SERVER_DEBUG, "find_declaration_of({}, {}:{})", filename, identifier_position.line(), identifier_position.column());
+    const auto& document = get_or_create_document_data(filename);
     auto position = resolve(document, identifier_position);
     auto result = document.node->hit_test_position(position);
     if (!result.matching_node) {
diff --git a/Userland/DevTools/HackStudio/LanguageServers/Shell/AutoComplete.h b/Userland/DevTools/HackStudio/LanguageServers/Shell/AutoComplete.h
index de1d3f9d704..2bfdf0aced2 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/Shell/AutoComplete.h
+++ b/Userland/DevTools/HackStudio/LanguageServers/Shell/AutoComplete.h
@@ -17,7 +17,7 @@ public:
     virtual Vector<GUI::AutocompleteProvider::Entry> get_suggestions(const String& file, const GUI::TextPosition& position) override;
     virtual void on_edit(const String& file) override;
     virtual void file_opened([[maybe_unused]] const String& file) override;
-    virtual Optional<GUI::AutocompleteProvider::ProjectLocation> find_declaration_of(const String& file_name, const GUI::TextPosition& identifier_position) override;
+    virtual Optional<GUI::AutocompleteProvider::ProjectLocation> find_declaration_of(const String& filename, const GUI::TextPosition& identifier_position) override;
 
 private:
     struct DocumentData {
diff --git a/Userland/DevTools/HackStudio/main.cpp b/Userland/DevTools/HackStudio/main.cpp
index 4b9c7013cbc..547d69ad7a8 100644
--- a/Userland/DevTools/HackStudio/main.cpp
+++ b/Userland/DevTools/HackStudio/main.cpp
@@ -132,14 +132,14 @@ GUI::TextEditor& current_editor()
     return s_hack_studio_widget->current_editor();
 }
 
-void open_file(const String& file_name)
+void open_file(const String& filename)
 {
-    s_hack_studio_widget->open_file(file_name);
+    s_hack_studio_widget->open_file(filename);
 }
 
-void open_file(const String& file_name, size_t line, size_t column)
+void open_file(const String& filename, size_t line, size_t column)
 {
-    s_hack_studio_widget->open_file(file_name);
+    s_hack_studio_widget->open_file(filename);
     s_hack_studio_widget->current_editor_wrapper().editor().set_cursor({ line, column });
 }
 
diff --git a/Userland/Games/2048/main.cpp b/Userland/Games/2048/main.cpp
index 99054b14703..4c12afe699c 100644
--- a/Userland/Games/2048/main.cpp
+++ b/Userland/Games/2048/main.cpp
@@ -56,7 +56,7 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    if (unveil(config->file_name().characters(), "crw") < 0) {
+    if (unveil(config->filename().characters(), "crw") < 0) {
         perror("unveil");
         return 1;
     }
diff --git a/Userland/Games/Chess/main.cpp b/Userland/Games/Chess/main.cpp
index 928d7990f39..4747a14996a 100644
--- a/Userland/Games/Chess/main.cpp
+++ b/Userland/Games/Chess/main.cpp
@@ -38,7 +38,7 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    if (unveil(config->file_name().characters(), "crw") < 0) {
+    if (unveil(config->filename().characters(), "crw") < 0) {
         perror("unveil");
         return 1;
     }
diff --git a/Userland/Games/Minesweeper/main.cpp b/Userland/Games/Minesweeper/main.cpp
index 424adf59cbd..c6a1d1994a3 100644
--- a/Userland/Games/Minesweeper/main.cpp
+++ b/Userland/Games/Minesweeper/main.cpp
@@ -40,7 +40,7 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    if (unveil(config->file_name().characters(), "crw") < 0) {
+    if (unveil(config->filename().characters(), "crw") < 0) {
         perror("unveil");
         return 1;
     }
diff --git a/Userland/Games/Pong/main.cpp b/Userland/Games/Pong/main.cpp
index d7cce5901ee..6451b5d3ec1 100644
--- a/Userland/Games/Pong/main.cpp
+++ b/Userland/Games/Pong/main.cpp
@@ -35,7 +35,7 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    if (unveil(config->file_name().characters(), "rwc") < 0) {
+    if (unveil(config->filename().characters(), "rwc") < 0) {
         perror("unveil");
         return 1;
     }
diff --git a/Userland/Games/Snake/main.cpp b/Userland/Games/Snake/main.cpp
index 13674ea302e..ae10a8b7a15 100644
--- a/Userland/Games/Snake/main.cpp
+++ b/Userland/Games/Snake/main.cpp
@@ -38,7 +38,7 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    if (unveil(config->file_name().characters(), "crw") < 0) {
+    if (unveil(config->filename().characters(), "crw") < 0) {
         perror("unveil");
         return 1;
     }
diff --git a/Userland/Libraries/LibArchive/Tar.h b/Userland/Libraries/LibArchive/Tar.h
index 4d2867193b1..de3118b983a 100644
--- a/Userland/Libraries/LibArchive/Tar.h
+++ b/Userland/Libraries/LibArchive/Tar.h
@@ -38,7 +38,7 @@ constexpr const char* posix1_tar_version = ""; // POSIX.1-1988 format version
 
 class [[gnu::packed]] TarFileHeader {
 public:
-    const StringView file_name() const { return m_file_name; }
+    const StringView filename() const { return m_filename; }
     mode_t mode() const { return get_tar_field(m_mode); }
     uid_t uid() const { return get_tar_field(m_uid); }
     gid_t gid() const { return get_tar_field(m_gid); }
@@ -57,7 +57,7 @@ public:
     // FIXME: support ustar filename prefix
     const StringView prefix() const { return m_prefix; }
 
-    void set_file_name(const String& file_name) { VERIFY(file_name.copy_characters_to_buffer(m_file_name, sizeof(m_file_name))); }
+    void set_filename(const String& filename) { VERIFY(filename.copy_characters_to_buffer(m_filename, sizeof(m_filename))); }
     void set_mode(mode_t mode) { VERIFY(String::formatted("{:o}", mode).copy_characters_to_buffer(m_mode, sizeof(m_mode))); }
     void set_uid(uid_t uid) { VERIFY(String::formatted("{:o}", uid).copy_characters_to_buffer(m_uid, sizeof(m_uid))); }
     void set_gid(gid_t gid) { VERIFY(String::formatted("{:o}", gid).copy_characters_to_buffer(m_gid, sizeof(m_gid))); }
@@ -77,7 +77,7 @@ public:
     void calculate_checksum();
 
 private:
-    char m_file_name[100];
+    char m_filename[100];
     char m_mode[8];
     char m_uid[8];
     char m_gid[8];
diff --git a/Userland/Libraries/LibArchive/TarStream.cpp b/Userland/Libraries/LibArchive/TarStream.cpp
index bb892fea7e9..5db912b6b20 100644
--- a/Userland/Libraries/LibArchive/TarStream.cpp
+++ b/Userland/Libraries/LibArchive/TarStream.cpp
@@ -132,7 +132,7 @@ void TarOutputStream::add_directory(const String& path, mode_t mode)
     TarFileHeader header;
     memset(&header, 0, sizeof(header));
     header.set_size(0);
-    header.set_file_name(String::formatted("{}/", path)); // Old tar implementations assume directory names end with a /
+    header.set_filename(String::formatted("{}/", path)); // Old tar implementations assume directory names end with a /
     header.set_type_flag(TarFileType::Directory);
     header.set_mode(mode);
     header.set_magic(gnu_magic);
@@ -149,7 +149,7 @@ void TarOutputStream::add_file(const String& path, mode_t mode, const ReadonlyBy
     TarFileHeader header;
     memset(&header, 0, sizeof(header));
     header.set_size(bytes.size());
-    header.set_file_name(path);
+    header.set_filename(path);
     header.set_type_flag(TarFileType::NormalFile);
     header.set_mode(mode);
     header.set_magic(gnu_magic);
diff --git a/Userland/Libraries/LibCore/ConfigFile.cpp b/Userland/Libraries/LibCore/ConfigFile.cpp
index 7bb69df9acb..5bbf8fae213 100644
--- a/Userland/Libraries/LibCore/ConfigFile.cpp
+++ b/Userland/Libraries/LibCore/ConfigFile.cpp
@@ -41,8 +41,8 @@ NonnullRefPtr<ConfigFile> ConfigFile::open(const String& path)
     return adopt_ref(*new ConfigFile(path));
 }
 
-ConfigFile::ConfigFile(const String& file_name)
-    : m_file_name(file_name)
+ConfigFile::ConfigFile(const String& filename)
+    : m_filename(filename)
 {
     reparse();
 }
@@ -56,7 +56,7 @@ void ConfigFile::reparse()
 {
     m_groups.clear();
 
-    auto file = File::construct(m_file_name);
+    auto file = File::construct(m_filename);
     if (!file->open(IODevice::OpenMode::ReadOnly))
         return;
 
@@ -151,7 +151,7 @@ bool ConfigFile::sync()
     if (!m_dirty)
         return true;
 
-    FILE* fp = fopen(m_file_name.characters(), "wb");
+    FILE* fp = fopen(m_filename.characters(), "wb");
     if (!fp)
         return false;
 
diff --git a/Userland/Libraries/LibCore/ConfigFile.h b/Userland/Libraries/LibCore/ConfigFile.h
index 862cd6255d7..0610f39e0ca 100644
--- a/Userland/Libraries/LibCore/ConfigFile.h
+++ b/Userland/Libraries/LibCore/ConfigFile.h
@@ -47,14 +47,14 @@ public:
     void remove_group(const String& group);
     void remove_entry(const String& group, const String& key);
 
-    String file_name() const { return m_file_name; }
+    String filename() const { return m_filename; }
 
 private:
-    explicit ConfigFile(const String& file_name);
+    explicit ConfigFile(const String& filename);
 
     void reparse();
 
-    String m_file_name;
+    String m_filename;
     HashMap<String, HashMap<String, String>> m_groups;
     bool m_dirty { false };
 };
diff --git a/Userland/Libraries/LibDebug/DebugSession.cpp b/Userland/Libraries/LibDebug/DebugSession.cpp
index 55a2c6874ab..b05494705a5 100644
--- a/Userland/Libraries/LibDebug/DebugSession.cpp
+++ b/Userland/Libraries/LibDebug/DebugSession.cpp
@@ -372,9 +372,9 @@ Optional<DebugSession::InsertBreakpointAtSymbolResult> DebugSession::insert_brea
     return result;
 }
 
-Optional<DebugSession::InsertBreakpointAtSourcePositionResult> DebugSession::insert_breakpoint(const String& file_name, size_t line_number)
+Optional<DebugSession::InsertBreakpointAtSourcePositionResult> DebugSession::insert_breakpoint(const String& filename, size_t line_number)
 {
-    auto address_and_source_position = get_address_from_source_position(file_name, line_number);
+    auto address_and_source_position = get_address_from_source_position(filename, line_number);
     if (!address_and_source_position.has_value())
         return {};
 
diff --git a/Userland/Libraries/LibDebug/DebugSession.h b/Userland/Libraries/LibDebug/DebugSession.h
index 0e9057cb3c5..dac76d5387f 100644
--- a/Userland/Libraries/LibDebug/DebugSession.h
+++ b/Userland/Libraries/LibDebug/DebugSession.h
@@ -57,12 +57,12 @@ public:
 
     struct InsertBreakpointAtSourcePositionResult {
         String library_name;
-        String file_name;
+        String filename;
         size_t line_number { 0 };
         FlatPtr address { 0 };
     };
 
-    Optional<InsertBreakpointAtSourcePositionResult> insert_breakpoint(const String& file_name, size_t line_number);
+    Optional<InsertBreakpointAtSourcePositionResult> insert_breakpoint(const String& filename, size_t line_number);
 
     bool insert_breakpoint(void* address);
     bool disable_breakpoint(void* address);
diff --git a/Userland/Libraries/LibDesktop/AppFile.h b/Userland/Libraries/LibDesktop/AppFile.h
index 5f847ec3e61..2172601a49e 100644
--- a/Userland/Libraries/LibDesktop/AppFile.h
+++ b/Userland/Libraries/LibDesktop/AppFile.h
@@ -21,7 +21,7 @@ public:
     ~AppFile();
 
     bool is_valid() const { return m_valid; }
-    String file_name() const { return m_config->file_name(); }
+    String filename() const { return m_config->filename(); }
 
     String name() const;
     String executable() const;
diff --git a/Userland/Libraries/LibDl/dlfcn.cpp b/Userland/Libraries/LibDl/dlfcn.cpp
index cde41168d5a..ef730e845d8 100644
--- a/Userland/Libraries/LibDl/dlfcn.cpp
+++ b/Userland/Libraries/LibDl/dlfcn.cpp
@@ -41,9 +41,9 @@ char* dlerror()
     return const_cast<char*>(s_dlerror_text);
 }
 
-void* dlopen(const char* file_name, int flags)
+void* dlopen(const char* filename, int flags)
 {
-    auto result = __dlopen(file_name, flags);
+    auto result = __dlopen(filename, flags);
     if (result.is_error()) {
         store_error(result.error().text);
         return nullptr;
diff --git a/Userland/Libraries/LibELF/AuxiliaryVector.h b/Userland/Libraries/LibELF/AuxiliaryVector.h
index bad82fadf95..3524e9c9fbc 100644
--- a/Userland/Libraries/LibELF/AuxiliaryVector.h
+++ b/Userland/Libraries/LibELF/AuxiliaryVector.h
@@ -42,7 +42,7 @@ typedef struct
 #define AT_BASE_PLATFORM 24 /* a_ptr points to a string identifying base platform name, which might be different from platform (e.g x86_64 when in i386 compat)  */
 #define AT_RANDOM 25        /* a_ptr points to 16 securely generated random bytes */
 #define AT_HWCAP2 26        /* a_val holds extended hw feature mask. Currently 0 */
-#define AT_EXECFN 31        /* a_ptr points to file name of executed program */
+#define AT_EXECFN 31        /* a_ptr points to filename of executed program */
 #define AT_EXE_BASE 32      /* a_ptr holds base address where main program was loaded into memory */
 #define AT_EXE_SIZE 33      /* a_val holds the size of the main program in memory */
 
diff --git a/Userland/Libraries/LibGUI/Desktop.cpp b/Userland/Libraries/LibGUI/Desktop.cpp
index 024a1d3cac5..77d40ed2b3f 100644
--- a/Userland/Libraries/LibGUI/Desktop.cpp
+++ b/Userland/Libraries/LibGUI/Desktop.cpp
@@ -49,7 +49,7 @@ bool Desktop::set_wallpaper(const StringView& path, bool save_config)
 
     if (ret_val && save_config) {
         RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("WindowManager");
-        dbgln("Saving wallpaper path '{}' to config file at {}", path, config->file_name());
+        dbgln("Saving wallpaper path '{}' to config file at {}", path, config->filename());
         config->write_entry("Background", "Wallpaper", path);
         config->sync();
     }
diff --git a/Userland/Libraries/LibGUI/FilePicker.cpp b/Userland/Libraries/LibGUI/FilePicker.cpp
index 1685dcacea7..0abf77d6b61 100644
--- a/Userland/Libraries/LibGUI/FilePicker.cpp
+++ b/Userland/Libraries/LibGUI/FilePicker.cpp
@@ -62,7 +62,7 @@ Optional<String> FilePicker::get_save_filepath(Window* parent_window, const Stri
     return {};
 }
 
-FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& file_name, const StringView& path)
+FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& filename, const StringView& path)
     : Dialog(parent_window)
     , m_model(FileSystemModel::create())
     , m_mode(mode)
@@ -148,7 +148,7 @@ FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& file_
     m_filename_textbox = *widget.find_descendant_of_type_named<GUI::TextBox>("filename_textbox");
     m_filename_textbox->set_focus(true);
     if (m_mode == Mode::Save) {
-        m_filename_textbox->set_text(file_name);
+        m_filename_textbox->set_text(filename);
         m_filename_textbox->select_all();
     }
     m_filename_textbox->on_return_pressed = [&] {
diff --git a/Userland/Libraries/LibGUI/FilePicker.h b/Userland/Libraries/LibGUI/FilePicker.h
index 595a6465221..93edc341368 100644
--- a/Userland/Libraries/LibGUI/FilePicker.h
+++ b/Userland/Libraries/LibGUI/FilePicker.h
@@ -43,7 +43,7 @@ private:
     // ^GUI::ModelClient
     virtual void model_did_update(unsigned) override;
 
-    FilePicker(Window* parent_window, Mode type = Mode::Open, const StringView& file_name = "Untitled", const StringView& path = Core::StandardPaths::home_directory());
+    FilePicker(Window* parent_window, Mode type = Mode::Open, const StringView& filename = "Untitled", const StringView& path = Core::StandardPaths::home_directory());
 
     static String ok_button_name(Mode mode)
     {
diff --git a/Userland/Libraries/LibGUI/FilePickerDialog.gml b/Userland/Libraries/LibGUI/FilePickerDialog.gml
index 6bac8140ccf..cd291fac5bc 100644
--- a/Userland/Libraries/LibGUI/FilePickerDialog.gml
+++ b/Userland/Libraries/LibGUI/FilePickerDialog.gml
@@ -30,7 +30,7 @@
         }
 
         @GUI::Label {
-            text: "File name:"
+            text: "Filename:"
             text_alignment: "CenterRight"
             fixed_height: 24
         }
diff --git a/Userland/Libraries/LibKeyboard/CharacterMap.h b/Userland/Libraries/LibKeyboard/CharacterMap.h
index 48407cf20e5..d12c1f4940d 100644
--- a/Userland/Libraries/LibKeyboard/CharacterMap.h
+++ b/Userland/Libraries/LibKeyboard/CharacterMap.h
@@ -20,7 +20,7 @@ class CharacterMap {
 
 public:
     CharacterMap(const String& map_name, const CharacterMapData& map_data);
-    static Optional<CharacterMap> load_from_file(const String& file_name);
+    static Optional<CharacterMap> load_from_file(const String& filename);
 
 #ifndef KERNEL
     int set_system_map();
diff --git a/Userland/Libraries/LibKeyboard/CharacterMapFile.cpp b/Userland/Libraries/LibKeyboard/CharacterMapFile.cpp
index cdefe240235..05fb406383d 100644
--- a/Userland/Libraries/LibKeyboard/CharacterMapFile.cpp
+++ b/Userland/Libraries/LibKeyboard/CharacterMapFile.cpp
@@ -11,13 +11,13 @@
 
 namespace Keyboard {
 
-Optional<CharacterMapData> CharacterMapFile::load_from_file(const String& file_name)
+Optional<CharacterMapData> CharacterMapFile::load_from_file(const String& filename)
 {
-    auto path = file_name;
+    auto path = filename;
     if (!path.ends_with(".json")) {
         StringBuilder full_path;
         full_path.append("/res/keymaps/");
-        full_path.append(file_name);
+        full_path.append(filename);
         full_path.append(".json");
         path = full_path.to_string();
     }
@@ -25,7 +25,7 @@ Optional<CharacterMapData> CharacterMapFile::load_from_file(const String& file_n
     auto file = Core::File::construct(path);
     file->open(Core::IODevice::ReadOnly);
     if (!file->is_open()) {
-        dbgln("Failed to open {}: {}", file_name, file->error_string());
+        dbgln("Failed to open {}: {}", filename, file->error_string());
         return {};
     }
 
diff --git a/Userland/Libraries/LibKeyboard/CharacterMapFile.h b/Userland/Libraries/LibKeyboard/CharacterMapFile.h
index 361901f13ce..c11800d6129 100644
--- a/Userland/Libraries/LibKeyboard/CharacterMapFile.h
+++ b/Userland/Libraries/LibKeyboard/CharacterMapFile.h
@@ -14,7 +14,7 @@ namespace Keyboard {
 class CharacterMapFile {
 
 public:
-    static Optional<CharacterMapData> load_from_file(const String& file_name);
+    static Optional<CharacterMapData> load_from_file(const String& filename);
 
 private:
     static Vector<u32> read_map(const JsonObject& json, const String& name);
diff --git a/Userland/Libraries/LibPCIDB/Database.cpp b/Userland/Libraries/LibPCIDB/Database.cpp
index 3821049d689..4282afd84cd 100644
--- a/Userland/Libraries/LibPCIDB/Database.cpp
+++ b/Userland/Libraries/LibPCIDB/Database.cpp
@@ -12,9 +12,9 @@
 
 namespace PCIDB {
 
-RefPtr<Database> Database::open(const String& file_name)
+RefPtr<Database> Database::open(const String& filename)
 {
-    auto file_or_error = MappedFile::map(file_name);
+    auto file_or_error = MappedFile::map(filename);
     if (file_or_error.is_error())
         return nullptr;
     auto res = adopt_ref(*new Database(file_or_error.release_value()));
diff --git a/Userland/Libraries/LibPCIDB/Database.h b/Userland/Libraries/LibPCIDB/Database.h
index 704d643f89b..01a0073c8d1 100644
--- a/Userland/Libraries/LibPCIDB/Database.h
+++ b/Userland/Libraries/LibPCIDB/Database.h
@@ -53,7 +53,7 @@ struct Class {
 
 class Database : public RefCounted<Database> {
 public:
-    static RefPtr<Database> open(const String& file_name);
+    static RefPtr<Database> open(const String& filename);
     static RefPtr<Database> open() { return open("/res/pci.ids"); };
 
     const StringView get_vendor(u16 vendor_id) const;
diff --git a/Userland/Libraries/LibVT/TerminalWidget.cpp b/Userland/Libraries/LibVT/TerminalWidget.cpp
index 328fbd602a0..db287562eb4 100644
--- a/Userland/Libraries/LibVT/TerminalWidget.cpp
+++ b/Userland/Libraries/LibVT/TerminalWidget.cpp
@@ -93,7 +93,7 @@ TerminalWidget::TerminalWidget(int ptm_fd, bool automatic_size_policy, RefPtr<Co
         update();
     };
 
-    dbgln("Load config file from {}", m_config->file_name());
+    dbgln("Load config file from {}", m_config->filename());
     m_cursor_blink_timer->set_interval(m_config->read_num_entry("Text",
         "CursorBlinkInterval",
         500));
diff --git a/Userland/Services/LookupServer/LookupServer.cpp b/Userland/Services/LookupServer/LookupServer.cpp
index 442f0090596..cac9f0f28ec 100644
--- a/Userland/Services/LookupServer/LookupServer.cpp
+++ b/Userland/Services/LookupServer/LookupServer.cpp
@@ -37,7 +37,7 @@ LookupServer::LookupServer()
     s_the = this;
 
     auto config = Core::ConfigFile::get_for_system("LookupServer");
-    dbgln("Using network config file at {}", config->file_name());
+    dbgln("Using network config file at {}", config->filename());
     m_nameservers = config->read_entry("DNS", "Nameservers", "1.1.1.1,1.0.0.1").split(',');
 
     load_etc_hosts();
diff --git a/Userland/Services/WindowServer/Cursor.cpp b/Userland/Services/WindowServer/Cursor.cpp
index 9722be3390a..a62ebe3bfc8 100644
--- a/Userland/Services/WindowServer/Cursor.cpp
+++ b/Userland/Services/WindowServer/Cursor.cpp
@@ -10,7 +10,7 @@
 
 namespace WindowServer {
 
-CursorParams CursorParams::parse_from_file_name(const StringView& cursor_path, const Gfx::IntPoint& default_hotspot)
+CursorParams CursorParams::parse_from_filename(const StringView& cursor_path, const Gfx::IntPoint& default_hotspot)
 {
     LexicalPath path(cursor_path);
     if (!path.is_valid()) {
@@ -123,7 +123,7 @@ NonnullRefPtr<Cursor> Cursor::create(NonnullRefPtr<Gfx::Bitmap>&& bitmap)
 NonnullRefPtr<Cursor> Cursor::create(NonnullRefPtr<Gfx::Bitmap>&& bitmap, const StringView& filename)
 {
     auto default_hotspot = bitmap->rect().center();
-    return adopt_ref(*new Cursor(move(bitmap), CursorParams::parse_from_file_name(filename, default_hotspot)));
+    return adopt_ref(*new Cursor(move(bitmap), CursorParams::parse_from_filename(filename, default_hotspot)));
 }
 
 RefPtr<Cursor> Cursor::create(Gfx::StandardCursor standard_cursor)
diff --git a/Userland/Services/WindowServer/Cursor.h b/Userland/Services/WindowServer/Cursor.h
index c615396e253..a6f237f1816 100644
--- a/Userland/Services/WindowServer/Cursor.h
+++ b/Userland/Services/WindowServer/Cursor.h
@@ -13,7 +13,7 @@ namespace WindowServer {
 
 class CursorParams {
 public:
-    static CursorParams parse_from_file_name(const StringView&, const Gfx::IntPoint&);
+    static CursorParams parse_from_filename(const StringView&, const Gfx::IntPoint&);
     CursorParams(const Gfx::IntPoint& hotspot)
         : m_hotspot(hotspot)
     {
diff --git a/Userland/Services/WindowServer/WindowManager.cpp b/Userland/Services/WindowServer/WindowManager.cpp
index 30daf61036f..1986507e2bd 100644
--- a/Userland/Services/WindowServer/WindowManager.cpp
+++ b/Userland/Services/WindowServer/WindowManager.cpp
@@ -116,13 +116,13 @@ bool WindowManager::set_resolution(int width, int height, int scale)
     }
     if (m_config) {
         if (success) {
-            dbgln("Saving resolution: {} @ {}x to config file at {}", Gfx::IntSize(width, height), scale, m_config->file_name());
+            dbgln("Saving resolution: {} @ {}x to config file at {}", Gfx::IntSize(width, height), scale, m_config->filename());
             m_config->write_num_entry("Screen", "Width", width);
             m_config->write_num_entry("Screen", "Height", height);
             m_config->write_num_entry("Screen", "ScaleFactor", scale);
             m_config->sync();
         } else {
-            dbgln("Saving fallback resolution: {} @1x to config file at {}", resolution(), m_config->file_name());
+            dbgln("Saving fallback resolution: {} @1x to config file at {}", resolution(), m_config->filename());
             m_config->write_num_entry("Screen", "Width", resolution().width());
             m_config->write_num_entry("Screen", "Height", resolution().height());
             m_config->write_num_entry("Screen", "ScaleFactor", 1);
@@ -140,7 +140,7 @@ Gfx::IntSize WindowManager::resolution() const
 void WindowManager::set_acceleration_factor(double factor)
 {
     Screen::the().set_acceleration_factor(factor);
-    dbgln("Saving acceleration factor {} to config file at {}", factor, m_config->file_name());
+    dbgln("Saving acceleration factor {} to config file at {}", factor, m_config->filename());
     m_config->write_entry("Mouse", "AccelerationFactor", String::formatted("{}", factor));
     m_config->sync();
 }
@@ -148,7 +148,7 @@ void WindowManager::set_acceleration_factor(double factor)
 void WindowManager::set_scroll_step_size(unsigned step_size)
 {
     Screen::the().set_scroll_step_size(step_size);
-    dbgln("Saving scroll step size {} to config file at {}", step_size, m_config->file_name());
+    dbgln("Saving scroll step size {} to config file at {}", step_size, m_config->filename());
     m_config->write_entry("Mouse", "ScrollStepSize", String::number(step_size));
     m_config->sync();
 }
@@ -157,7 +157,7 @@ void WindowManager::set_double_click_speed(int speed)
 {
     VERIFY(speed >= double_click_speed_min && speed <= double_click_speed_max);
     m_double_click_speed = speed;
-    dbgln("Saving double-click speed {} to config file at {}", speed, m_config->file_name());
+    dbgln("Saving double-click speed {} to config file at {}", speed, m_config->filename());
     m_config->write_entry("Input", "DoubleClickSpeed", String::number(speed));
     m_config->sync();
 }
diff --git a/Userland/Utilities/head.cpp b/Userland/Utilities/head.cpp
index d51b66f6a28..8455dedc23d 100644
--- a/Userland/Utilities/head.cpp
+++ b/Userland/Utilities/head.cpp
@@ -30,8 +30,8 @@ int main(int argc, char** argv)
     args_parser.set_general_help("Print the beginning ('head') of a file.");
     args_parser.add_option(line_count, "Number of lines to print (default 10)", "lines", 'n', "number");
     args_parser.add_option(char_count, "Number of characters to print", "characters", 'c', "number");
-    args_parser.add_option(never_print_filenames, "Never print file names", "quiet", 'q');
-    args_parser.add_option(always_print_filenames, "Always print file names", "verbose", 'v');
+    args_parser.add_option(never_print_filenames, "Never print filenames", "quiet", 'q');
+    args_parser.add_option(always_print_filenames, "Always print filenames", "verbose", 'v');
     args_parser.add_positional_argument(files, "File to process", "file", Core::ArgsParser::Required::No);
     args_parser.parse(argc, argv);
 
diff --git a/Userland/Utilities/js.cpp b/Userland/Utilities/js.cpp
index b2f2ed09fe3..3045f2d5d68 100644
--- a/Userland/Utilities/js.cpp
+++ b/Userland/Utilities/js.cpp
@@ -574,8 +574,8 @@ JS_DEFINE_NATIVE_FUNCTION(ReplObject::repl_help)
     outln("REPL commands:");
     outln("    exit(code): exit the REPL with specified code. Defaults to 0.");
     outln("    help(): display this menu");
-    outln("    load(files): accepts file names as params to load into running session. For example load(\"js/1.js\", \"js/2.js\", \"js/3.js\")");
-    outln("    save(file): accepts a file name, writes REPL input history to a file. For example: save(\"foo.txt\")");
+    outln("    load(files): accepts filenames as params to load into running session. For example load(\"js/1.js\", \"js/2.js\", \"js/3.js\")");
+    outln("    save(file): accepts a filename, writes REPL input history to a file. For example: save(\"foo.txt\")");
     return JS::js_undefined();
 }
 
@@ -585,10 +585,10 @@ JS_DEFINE_NATIVE_FUNCTION(ReplObject::load_file)
         return JS::Value(false);
 
     for (auto& file : vm.call_frame().arguments) {
-        String file_name = file.as_string().string();
-        auto js_file = Core::File::construct(file_name);
+        String filename = file.as_string().string();
+        auto js_file = Core::File::construct(filename);
         if (!js_file->open(Core::IODevice::ReadOnly)) {
-            warnln("Failed to open {}: {}", file_name, js_file->error_string());
+            warnln("Failed to open {}: {}", filename, js_file->error_string());
             continue;
         }
         auto file_contents = js_file->read_all();
diff --git a/Userland/Utilities/lsof.cpp b/Userland/Utilities/lsof.cpp
index e67eeb06a12..7cb86a9625f 100644
--- a/Userland/Utilities/lsof.cpp
+++ b/Userland/Utilities/lsof.cpp
@@ -124,7 +124,7 @@ int main(int argc, char* argv[])
     int arg_uid_int = -1;
     int arg_pgid { -1 };
     pid_t arg_pid { -1 };
-    const char* arg_file_name { nullptr };
+    const char* arg_filename { nullptr };
 
     if (argc == 1)
         arg_all_processes = true;
@@ -135,7 +135,7 @@ int main(int argc, char* argv[])
         parser.add_option(arg_fd, "Select by file descriptor", nullptr, 'd', "fd");
         parser.add_option(arg_uid, "Select by login/UID", nullptr, 'u', "login/UID");
         parser.add_option(arg_pgid, "Select by process group ID", nullptr, 'g', "PGID");
-        parser.add_positional_argument(arg_file_name, "File name", "file name", Core::ArgsParser::Required::No);
+        parser.add_positional_argument(arg_filename, "Filename", "filename", Core::ArgsParser::Required::No);
         parser.parse(argc, argv);
     }
     {
@@ -164,7 +164,7 @@ int main(int argc, char* argv[])
                     || (arg_uid_int != -1 && (int)process.value.uid == arg_uid_int)
                     || (arg_uid != nullptr && process.value.username == arg_uid)
                     || (arg_pgid != -1 && (int)process.value.pgid == arg_pgid)
-                    || (arg_file_name != nullptr && file.name == arg_file_name))
+                    || (arg_filename != nullptr && file.name == arg_filename))
                     display_entry(file, process.value);
             }
         }
diff --git a/Userland/Utilities/md.cpp b/Userland/Utilities/md.cpp
index 306830756cd..564ae282ca0 100644
--- a/Userland/Utilities/md.cpp
+++ b/Userland/Utilities/md.cpp
@@ -22,7 +22,7 @@ int main(int argc, char* argv[])
         return 1;
     }
 
-    const char* file_name = nullptr;
+    const char* filename = nullptr;
     bool html = false;
     int view_width = 0;
 
@@ -30,7 +30,7 @@ int main(int argc, char* argv[])
     args_parser.set_general_help("Render Markdown to some other format.");
     args_parser.add_option(html, "Render to HTML rather than for the terminal", "html", 'H');
     args_parser.add_option(view_width, "Viewport width for the terminal (defaults to current terminal width)", "view-width", 0, "width");
-    args_parser.add_positional_argument(file_name, "Path to Markdown file", "path", Core::ArgsParser::Required::No);
+    args_parser.add_positional_argument(filename, "Path to Markdown file", "path", Core::ArgsParser::Required::No);
     args_parser.parse(argc, argv);
 
     if (!html && view_width == 0) {
@@ -47,10 +47,10 @@ int main(int argc, char* argv[])
     }
     auto file = Core::File::construct();
     bool success;
-    if (file_name == nullptr) {
+    if (filename == nullptr) {
         success = file->open(STDIN_FILENO, Core::IODevice::OpenMode::ReadOnly, Core::File::ShouldCloseFileDescriptor::No);
     } else {
-        file->set_filename(file_name);
+        file->set_filename(filename);
         success = file->open(Core::IODevice::OpenMode::ReadOnly);
     }
     if (!success) {
diff --git a/Userland/Utilities/pathchk.cpp b/Userland/Utilities/pathchk.cpp
index d4ff7fc9aa3..77caa975705 100644
--- a/Userland/Utilities/pathchk.cpp
+++ b/Userland/Utilities/pathchk.cpp
@@ -42,17 +42,17 @@ int main(int argc, char** argv)
         unsigned long name_max = flag_most_posix ? _POSIX_NAME_MAX : pathconf(str_path.characters(), _PC_NAME_MAX);
 
         if (str_path.length() > path_max) {
-            warnln("{}: limit {} exceeded by length {} of file name '{}'", argv[0], path_max, str_path.length(), str_path);
+            warnln("{}: limit {} exceeded by length {} of filename '{}'", argv[0], path_max, str_path.length(), str_path);
             fail = true;
             continue;
         }
 
         if (flag_most_posix) {
-            // POSIX portable file name character set (a-z A-Z 0-9 . _ -)
+            // POSIX portable filename character set (a-z A-Z 0-9 . _ -)
             for (long unsigned i = 0; i < str_path.length(); ++i) {
                 auto c = path[i];
                 if (!(c >= 'a' && c <= 'z') && !(c >= 'A' && c <= 'Z') && !(c >= '0' && c <= '9') && c != '/' && c != '.' && c != '-' && c != '_') {
-                    warnln("{}: non-portable character '{}' in file name '{}'", argv[0], path[i], str_path);
+                    warnln("{}: non-portable character '{}' in filename '{}'", argv[0], path[i], str_path);
                     fail = true;
                     continue;
                 }
@@ -70,7 +70,7 @@ int main(int argc, char** argv)
 
         if (flag_empty_name_and_leading_dash) {
             if (str_path.is_empty()) {
-                warnln("{}: empty file name", argv[0]);
+                warnln("{}: empty filename", argv[0]);
                 fail = true;
                 continue;
             }
@@ -79,13 +79,13 @@ int main(int argc, char** argv)
         for (auto& component : str_path.split('/')) {
             if (flag_empty_name_and_leading_dash) {
                 if (component.starts_with('-')) {
-                    warnln("{}: leading '-' in a component of file name '{}'", argv[0], str_path);
+                    warnln("{}: leading '-' in a component of filename '{}'", argv[0], str_path);
                     fail = true;
                     break;
                 }
             }
             if (component.length() > name_max) {
-                warnln("{}: limit {} exceeded by length {} of file name component '{}'", argv[0], name_max, component.length(), component.characters());
+                warnln("{}: limit {} exceeded by length {} of filename component '{}'", argv[0], name_max, component.length(), component.characters());
                 fail = true;
                 break;
             }
diff --git a/Userland/Utilities/tar.cpp b/Userland/Utilities/tar.cpp
index 7877787b374..18ed93681cd 100644
--- a/Userland/Utilities/tar.cpp
+++ b/Userland/Utilities/tar.cpp
@@ -68,7 +68,7 @@ int main(int argc, char** argv)
         }
         for (; !tar_stream.finished(); tar_stream.advance()) {
             if (list || verbose)
-                outln("{}", tar_stream.header().file_name());
+                outln("{}", tar_stream.header().filename());
 
             if (extract) {
                 Archive::TarFileStream file_stream = tar_stream.file_contents();
@@ -77,7 +77,7 @@ int main(int argc, char** argv)
                 switch (header.type_flag()) {
                 case Archive::TarFileType::NormalFile:
                 case Archive::TarFileType::AlternateNormalFile: {
-                    int fd = open(String(header.file_name()).characters(), O_CREAT | O_WRONLY, header.mode());
+                    int fd = open(String(header.filename()).characters(), O_CREAT | O_WRONLY, header.mode());
                     if (fd < 0) {
                         perror("open");
                         return 1;
@@ -95,7 +95,7 @@ int main(int argc, char** argv)
                     break;
                 }
                 case Archive::TarFileType::Directory: {
-                    if (mkdir(String(header.file_name()).characters(), header.mode())) {
+                    if (mkdir(String(header.filename()).characters(), header.mode())) {
                         perror("mkdir");
                         return 1;
                     }
diff --git a/Userland/Utilities/test-crypto.cpp b/Userland/Utilities/test-crypto.cpp
index bc676de168b..191d85ddb18 100644
--- a/Userland/Utilities/test-crypto.cpp
+++ b/Userland/Utilities/test-crypto.cpp
@@ -128,7 +128,7 @@ static int run(Function<void(const char*, size_t)> fn)
         }
     } else {
         if (filename == nullptr) {
-            puts("must specify a file name");
+            puts("must specify a filename");
             return 1;
         }
         if (!Core::File::exists(filename)) {