diff --git a/Userland/Applications/3DFileViewer/main.cpp b/Userland/Applications/3DFileViewer/main.cpp
index f2d5f3ea9fb..04b4a47cd02 100644
--- a/Userland/Applications/3DFileViewer/main.cpp
+++ b/Userland/Applications/3DFileViewer/main.cpp
@@ -378,7 +378,10 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     auto& file_menu = window->add_menu("&File"_short_string);
 
     file_menu.add_action(GUI::CommonActions::make_open_action([&](auto&) {
-        auto response = FileSystemAccessClient::Client::the().open_file(window);
+        FileSystemAccessClient::OpenFileOptions options {
+            .allowed_file_types = { { GUI::FileTypeFilter { "Object Files", { { "obj" } } }, GUI::FileTypeFilter::all_files() } },
+        };
+        auto response = FileSystemAccessClient::Client::the().open_file(window, options);
         if (response.is_error())
             return;
 
diff --git a/Userland/Applications/CertificateSettings/CertificateStoreWidget.cpp b/Userland/Applications/CertificateSettings/CertificateStoreWidget.cpp
index 6feddc5ca47..d2fc3c215e9 100644
--- a/Userland/Applications/CertificateSettings/CertificateStoreWidget.cpp
+++ b/Userland/Applications/CertificateSettings/CertificateStoreWidget.cpp
@@ -92,15 +92,17 @@ ErrorOr<size_t> CertificateStoreModel::add(Vector<Certificate> const& certificat
 
 ErrorOr<void> CertificateStoreWidget::import_pem()
 {
-    auto fsac_result = FileSystemAccessClient::Client::the().open_file(window(), { .window_title = "Import"sv });
+    FileSystemAccessClient::OpenFileOptions options {
+        .window_title = "Import"sv,
+        .allowed_file_types = Vector {
+            GUI::FileTypeFilter { "Certificate Files", { { "pem", "crt" } } },
+        },
+    };
+    auto fsac_result = FileSystemAccessClient::Client::the().open_file(window(), options);
     if (fsac_result.is_error())
         return {};
 
     auto fsac_file = fsac_result.release_value();
-    auto filename = fsac_file.filename();
-    if (!(filename.ends_with_bytes(".pem"sv) || filename.ends_with_bytes(".crt"sv)))
-        return Error::from_string_view("File is not a .pem or .crt file."sv);
-
     auto data = TRY(fsac_file.release_stream()->read_until_eof());
     auto count = TRY(m_root_ca_model->add(TRY(DefaultRootCACertificates::parse_pem_root_certificate_authorities(data))));
 
diff --git a/Userland/Applications/ImageViewer/main.cpp b/Userland/Applications/ImageViewer/main.cpp
index 58678394400..cad31b99bd7 100644
--- a/Userland/Applications/ImageViewer/main.cpp
+++ b/Userland/Applications/ImageViewer/main.cpp
@@ -121,7 +121,11 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     // Actions
     auto open_action = GUI::CommonActions::make_open_action(
         [&](auto&) {
-            auto result = FileSystemAccessClient::Client::the().open_file(window, { .window_title = "Open Image"sv });
+            FileSystemAccessClient::OpenFileOptions options {
+                .window_title = "Open Image"sv,
+                .allowed_file_types = Vector { GUI::FileTypeFilter::image_files(), GUI::FileTypeFilter::all_files() },
+            };
+            auto result = FileSystemAccessClient::Client::the().open_file(window, options);
             if (result.is_error())
                 return;
 
diff --git a/Userland/Applications/PDFViewer/PDFViewerWidget.cpp b/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
index a7f3b789b24..d419d520338 100644
--- a/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
+++ b/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
@@ -210,7 +210,13 @@ ErrorOr<void> PDFViewerWidget::initialize_menubar(GUI::Window& window)
 {
     auto file_menu = TRY(window.try_add_menu("&File"_short_string));
     TRY(file_menu->try_add_action(GUI::CommonActions::make_open_action([&](auto&) {
-        auto response = FileSystemAccessClient::Client::the().open_file(&window);
+        FileSystemAccessClient::OpenFileOptions options {
+            .allowed_file_types = Vector {
+                GUI::FileTypeFilter { "PDF Files", { { "pdf" } } },
+                GUI::FileTypeFilter::all_files(),
+            },
+        };
+        auto response = FileSystemAccessClient::Client::the().open_file(&window, options);
         if (!response.is_error())
             open_file(response.value().filename(), response.value().release_stream());
     })));
diff --git a/Userland/Applications/PixelPaint/MainWidget.cpp b/Userland/Applications/PixelPaint/MainWidget.cpp
index e8e3168df27..1de57f7c916 100644
--- a/Userland/Applications/PixelPaint/MainWidget.cpp
+++ b/Userland/Applications/PixelPaint/MainWidget.cpp
@@ -192,7 +192,9 @@ ErrorOr<void> MainWidget::initialize_menubar(GUI::Window& window)
         });
 
     m_open_image_action = GUI::CommonActions::make_open_action([&](auto&) {
-        auto response = FileSystemAccessClient::Client::the().open_file(&window);
+        auto image_files = GUI::FileTypeFilter::image_files();
+        image_files.extensions->append("pp");
+        auto response = FileSystemAccessClient::Client::the().open_file(&window, { .allowed_file_types = Vector { image_files, GUI::FileTypeFilter::all_files() } });
         if (response.is_error())
             return;
         open_image(response.release_value());
@@ -455,7 +457,14 @@ ErrorOr<void> MainWidget::initialize_menubar(GUI::Window& window)
         })));
     TRY(m_edit_menu->try_add_action(GUI::Action::create(
         "&Load Color Palette...", g_icon_bag.load_color_palette, [&](auto&) {
-            auto response = FileSystemAccessClient::Client::the().open_file(&window, { .window_title = "Load Color Palette"sv });
+            FileSystemAccessClient::OpenFileOptions options {
+                .window_title = "Load Color Palette"sv,
+                .allowed_file_types = Vector {
+                    { "Palette Files", { { "palette" } } },
+                    GUI::FileTypeFilter::all_files(),
+                },
+            };
+            auto response = FileSystemAccessClient::Client::the().open_file(&window, options);
             if (response.is_error())
                 return;
 
diff --git a/Userland/Applications/Presenter/PresenterWidget.cpp b/Userland/Applications/Presenter/PresenterWidget.cpp
index 5780d324476..cfae188d73e 100644
--- a/Userland/Applications/Presenter/PresenterWidget.cpp
+++ b/Userland/Applications/Presenter/PresenterWidget.cpp
@@ -57,7 +57,10 @@ ErrorOr<void> PresenterWidget::initialize_menubar()
     // Set up the menu bar.
     auto file_menu = TRY(window->try_add_menu("&File"_short_string));
     auto open_action = GUI::CommonActions::make_open_action([this](auto&) {
-        auto response = FileSystemAccessClient::Client::the().open_file(this->window());
+        FileSystemAccessClient::OpenFileOptions options {
+            .allowed_file_types = { { GUI::FileTypeFilter { "Presentation Files", { { "presenter" } } }, GUI::FileTypeFilter::all_files() } },
+        };
+        auto response = FileSystemAccessClient::Client::the().open_file(this->window(), options);
         if (response.is_error())
             return;
         this->set_file(response.value().filename());
diff --git a/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp b/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
index 9b1037c21b4..f83843c4165 100644
--- a/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
+++ b/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
@@ -128,14 +128,26 @@ SpreadsheetWidget::SpreadsheetWidget(GUI::Window& parent_window, Vector<NonnullR
         if (!request_close())
             return;
 
-        auto response = FileSystemAccessClient::Client::the().open_file(window());
+        FileSystemAccessClient::OpenFileOptions options {
+            .allowed_file_types = Vector {
+                { "Spreadsheets", { { "sheets", "csv" } } },
+                GUI::FileTypeFilter::all_files(),
+            },
+        };
+        auto response = FileSystemAccessClient::Client::the().open_file(window(), options);
         if (response.is_error())
             return;
         load_file(response.value().filename(), response.value().stream());
     });
 
     m_import_action = GUI::Action::create("Import Sheets...", [&](auto&) {
-        auto response = FileSystemAccessClient::Client::the().open_file(window());
+        FileSystemAccessClient::OpenFileOptions options {
+            .allowed_file_types = Vector {
+                { "Spreadsheets", { { "sheets", "csv" } } },
+                GUI::FileTypeFilter::all_files(),
+            },
+        };
+        auto response = FileSystemAccessClient::Client::the().open_file(window(), options);
         if (response.is_error())
             return;
 
diff --git a/Userland/Applications/ThemeEditor/MainWidget.cpp b/Userland/Applications/ThemeEditor/MainWidget.cpp
index c2f55818b1f..cf3b375c077 100644
--- a/Userland/Applications/ThemeEditor/MainWidget.cpp
+++ b/Userland/Applications/ThemeEditor/MainWidget.cpp
@@ -242,7 +242,12 @@ ErrorOr<void> MainWidget::initialize_menubar(GUI::Window& window)
     TRY(file_menu->try_add_action(GUI::CommonActions::make_open_action([&](auto&) {
         if (request_close() == GUI::Window::CloseRequestDecision::StayOpen)
             return;
-        auto response = FileSystemAccessClient::Client::the().open_file(&window, { .window_title = "Select Theme"sv, .path = "/res/themes"sv });
+        FileSystemAccessClient::OpenFileOptions options {
+            .window_title = "Select Theme"sv,
+            .path = "/res/themes"sv,
+            .allowed_file_types = Vector { { "Theme Files", { { "ini" } } }, GUI::FileTypeFilter::all_files() },
+        };
+        auto response = FileSystemAccessClient::Client::the().open_file(&window, options);
         if (response.is_error())
             return;
         auto load_from_file_result = load_from_file(response.value().filename(), response.value().release_stream());
diff --git a/Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp b/Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp
index 69960606d43..c74ec4b2a0e 100644
--- a/Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp
+++ b/Userland/Applications/VideoPlayer/VideoPlayerWidget.cpp
@@ -384,7 +384,10 @@ ErrorOr<void> VideoPlayerWidget::initialize_menubar(GUI::Window& window)
     // File menu
     auto file_menu = TRY(window.try_add_menu("&File"_short_string));
     TRY(file_menu->try_add_action(GUI::CommonActions::make_open_action([&](auto&) {
-        auto response = FileSystemAccessClient::Client::the().open_file(&window);
+        FileSystemAccessClient::OpenFileOptions options {
+            .allowed_file_types = { { GUI::FileTypeFilter { "Video Files", { { "mkv", "webm" } } }, GUI::FileTypeFilter::all_files() } },
+        };
+        auto response = FileSystemAccessClient::Client::the().open_file(&window, options);
         if (response.is_error())
             return;
 
diff --git a/Userland/Games/Chess/main.cpp b/Userland/Games/Chess/main.cpp
index 7c1e385c3de..3078169ed1b 100644
--- a/Userland/Games/Chess/main.cpp
+++ b/Userland/Games/Chess/main.cpp
@@ -99,7 +99,13 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     TRY(game_menu->try_add_separator());
 
     TRY(game_menu->try_add_action(GUI::Action::create("&Import PGN...", { Mod_Ctrl, Key_O }, [&](auto&) {
-        auto result = FileSystemAccessClient::Client::the().open_file(window);
+        FileSystemAccessClient::OpenFileOptions options {
+            .allowed_file_types = Vector {
+                GUI::FileTypeFilter { "PGN Files", { { "pgn" } } },
+                GUI::FileTypeFilter::all_files(),
+            }
+        };
+        auto result = FileSystemAccessClient::Client::the().open_file(window, options);
         if (result.is_error())
             return;