diff --git a/packages/text-editor/src/components/imageExt.ts b/packages/text-editor/src/components/imageExt.ts
index 644c66824c..4830803c89 100644
--- a/packages/text-editor/src/components/imageExt.ts
+++ b/packages/text-editor/src/components/imageExt.ts
@@ -1,6 +1,6 @@
 import { getEmbeddedLabel } from '@hcengineering/platform'
 import { getFileUrl } from '@hcengineering/presentation'
-import { Action, Menu, getEventPositionElement, showPopup } from '@hcengineering/ui'
+import { Action, IconSize, Menu, getEventPositionElement, getIconSize2x, showPopup } from '@hcengineering/ui'
 import { Node, createNodeFromContent, mergeAttributes, nodeInputRule } from '@tiptap/core'
 import { Plugin, PluginKey } from 'prosemirror-state'
 import plugin from '../plugin'
@@ -88,6 +88,27 @@ export const ImageRef = Node.create<ImageOptions>({
       HTMLAttributes
     )
     merged.src = getFileUrl(merged['file-id'], 'full')
+    let width: IconSize | undefined
+    switch (merged.width) {
+      case '32px':
+        width = 'small'
+        break
+      case '64px':
+        width = 'medium'
+        break
+      case '128px':
+      case '256px':
+        width = 'large'
+        break
+      case '512px':
+        width = 'x-large'
+        break
+    }
+    if (width !== undefined) {
+      merged.src = getFileUrl(merged['file-id'], width)
+      merged.srcset =
+        getFileUrl(merged['file-id'], width) + ' 1x,' + getFileUrl(merged['file-id'], getIconSize2x(width)) + ' 2x'
+    }
     merged.class = 'textEditorImage'
     return ['img', merged]
   },
diff --git a/packages/ui/src/types.ts b/packages/ui/src/types.ts
index 9f52e30ce1..92323d4647 100644
--- a/packages/ui/src/types.ts
+++ b/packages/ui/src/types.ts
@@ -189,6 +189,7 @@ export type TooltipAlignment = 'top' | 'bottom' | 'left' | 'right'
 export type VerticalAlignment = 'top' | 'bottom'
 export type HorizontalAlignment = 'left' | 'right'
 
+// Be aware to update front getResizeID() to properly store resized images.
 export type IconSize =
   | 'inline'
   | 'tiny'
@@ -202,6 +203,26 @@ export type IconSize =
   | '2x-large'
   | 'full'
 
+export function getIconSize2x (size: IconSize): IconSize {
+  switch (size) {
+    case 'inline':
+    case 'tiny':
+    case 'x-small':
+    case 'small':
+    case 'card':
+    case 'smaller':
+    case 'medium':
+      return 'large'
+    case 'large':
+      return 'x-large'
+    case 'x-large':
+      return '2x-large'
+    case '2x-large':
+    case 'full':
+      return 'full'
+  }
+}
+
 export interface DateOrShift {
   date?: number
   shift?: number
diff --git a/plugins/attachment-resources/src/components/AttachmentPresenter.svelte b/plugins/attachment-resources/src/components/AttachmentPresenter.svelte
index 5a2ae23be5..83a962fa66 100644
--- a/plugins/attachment-resources/src/components/AttachmentPresenter.svelte
+++ b/plugins/attachment-resources/src/components/AttachmentPresenter.svelte
@@ -16,7 +16,7 @@
 <script lang="ts">
   import { createEventDispatcher } from 'svelte'
   import type { Attachment } from '@hcengineering/attachment'
-  import { showPopup, closeTooltip, Label } from '@hcengineering/ui'
+  import { showPopup, closeTooltip, Label, getIconSize2x } from '@hcengineering/ui'
   import presentation, { PDFViewer, getFileUrl } from '@hcengineering/presentation'
   import filesize from 'filesize'
 
@@ -69,6 +69,18 @@
   }
 
   let download: HTMLAnchorElement
+
+  $: imgStyle = isImage(value.type)
+    ? `background-image: url(${getFileUrl(value.file, 'large')});
+       background-image: -webkit-image-set(
+        ${getFileUrl(value.file, 'large')} 1x,
+        ${getFileUrl(value.file, getIconSize2x('large'))} 2x
+      );
+      background-image: image-set(
+        ${getFileUrl(value.file, 'large')} 1x,
+        ${getFileUrl(value.file, getIconSize2x('large'))} 2x
+      );`
+    : ''
 </script>
 
 <div class="flex-row-center attachment-container">
@@ -83,7 +95,7 @@
       class="flex-center icon"
       class:svg={value.type === 'image/svg+xml'}
       class:image={isImage(value.type)}
-      style:background-image={isImage(value.type) ? `url(${getFileUrl(value.file, 'large')})` : 'none'}
+      style={imgStyle}
     >
       {#if !isImage(value.type)}{iconLabel(value.name)}{/if}
     </div> -->
diff --git a/plugins/attachment-resources/src/components/AttachmentPreview.svelte b/plugins/attachment-resources/src/components/AttachmentPreview.svelte
index 23c9822a28..9204b19efb 100644
--- a/plugins/attachment-resources/src/components/AttachmentPreview.svelte
+++ b/plugins/attachment-resources/src/components/AttachmentPreview.svelte
@@ -16,7 +16,7 @@
 <script lang="ts">
   import type { Attachment } from '@hcengineering/attachment'
   import { getFileUrl, PDFViewer } from '@hcengineering/presentation'
-  import { showPopup, closeTooltip } from '@hcengineering/ui'
+  import { showPopup, closeTooltip, getIconSize2x } from '@hcengineering/ui'
   import { getType } from '../utils'
   import AttachmentPresenter from './AttachmentPresenter.svelte'
   import AttachmentActions from './AttachmentActions.svelte'
@@ -47,7 +47,15 @@
       dispatch('open', popupInfo.id)
     }}
   >
-    <img src={getFileUrl(value.file, 'large')} alt={value.name} />
+    <img
+      src={getFileUrl(value.file, 'large')}
+      srcset={`${getFileUrl(value.file, 'large', value.name)} 1x, ${getFileUrl(
+        value.file,
+        getIconSize2x('large'),
+        value.name
+      )} 2x`}
+      alt={value.name}
+    />
     <div class="actions conner">
       <AttachmentActions attachment={value} {isSaved} />
     </div>
diff --git a/plugins/contact-resources/src/components/Avatar.svelte b/plugins/contact-resources/src/components/Avatar.svelte
index ec88886d59..693cecbcfd 100644
--- a/plugins/contact-resources/src/components/Avatar.svelte
+++ b/plugins/contact-resources/src/components/Avatar.svelte
@@ -40,13 +40,13 @@
   export let size: IconSize
   export let icon: Asset | AnySvelteComponent | undefined = undefined
 
-  let url: string | undefined
+  let url: string[] | undefined
   let avatarProvider: AvatarProvider | undefined
 
   async function update (size: IconSize, avatar?: string | null, direct?: Blob) {
     if (direct !== undefined) {
       getBlobURL(direct).then((blobURL) => {
-        url = blobURL
+        url = [blobURL]
         avatarProvider = undefined
       })
     } else if (avatar) {
@@ -69,14 +69,16 @@
   $: update(size, avatar, direct)
 
   let imageElement: HTMLImageElement | undefined = undefined
+
+  $: srcset = url?.slice(1)?.join(', ')
 </script>
 
 <div class="ava-{size} flex-center avatar-container" class:no-img={!url}>
   {#if url}
     {#if size === 'large' || size === 'x-large' || size === '2x-large'}
-      <img class="ava-{size} ava-blur" src={url} alt={''} bind:this={imageElement} />
+      <img class="ava-{size} ava-blur" src={url[0]} {srcset} alt={''} bind:this={imageElement} />
     {/if}
-    <img class="ava-{size} ava-mask" src={url} alt={''} bind:this={imageElement} />
+    <img class="ava-{size} ava-mask" src={url[0]} {srcset} alt={''} bind:this={imageElement} />
   {:else}
     <Icon icon={icon ?? AvatarIcon} size={size === 'card' ? 'x-small' : size} />
   {/if}
diff --git a/plugins/contact-resources/src/index.ts b/plugins/contact-resources/src/index.ts
index 4f158901e2..91e918ebfe 100644
--- a/plugins/contact-resources/src/index.ts
+++ b/plugins/contact-resources/src/index.ts
@@ -19,12 +19,22 @@ import { Class, Client, DocumentQuery, Ref, RelatedDocument, WithLookup } from '
 import login from '@hcengineering/login'
 import { IntlString, Resources, getResource } from '@hcengineering/platform'
 import { MessageBox, ObjectSearchResult, getClient, getFileUrl } from '@hcengineering/presentation'
-import { AnyComponent, AnySvelteComponent, TooltipAlignment, parseURL, showPopup } from '@hcengineering/ui'
+import {
+  AnyComponent,
+  AnySvelteComponent,
+  IconSize,
+  TooltipAlignment,
+  getIconSize2x,
+  parseURL,
+  showPopup
+} from '@hcengineering/ui'
 import AccountArrayEditor from './components/AccountArrayEditor.svelte'
 import AccountBox from './components/AccountBox.svelte'
 import AssigneeBox from './components/AssigneeBox.svelte'
 import Avatar from './components/Avatar.svelte'
 import ChannelFilter from './components/ChannelFilter.svelte'
+import ChannelPanel from './components/ChannelPanel.svelte'
+import ChannelPresenter from './components/ChannelPresenter.svelte'
 import Channels from './components/Channels.svelte'
 import ChannelsDropdown from './components/ChannelsDropdown.svelte'
 import ChannelsEditor from './components/ChannelsEditor.svelte'
@@ -39,17 +49,21 @@ import ContactsTabs from './components/ContactsTabs.svelte'
 import CreateEmployee from './components/CreateEmployee.svelte'
 import CreateOrganization from './components/CreateOrganization.svelte'
 import CreatePerson from './components/CreatePerson.svelte'
+import DeleteConfirmationPopup from './components/DeleteConfirmationPopup.svelte'
 import EditEmployee from './components/EditEmployee.svelte'
 import EditMember from './components/EditMember.svelte'
 import EditOrganization from './components/EditOrganization.svelte'
 import EditPerson from './components/EditPerson.svelte'
 import EditableAvatar from './components/EditableAvatar.svelte'
+import EmployeeAccountFilterValuePresenter from './components/EmployeeAccountFilterValuePresenter.svelte'
 import EmployeeAccountPresenter from './components/EmployeeAccountPresenter.svelte'
 import EmployeeAccountRefPresenter from './components/EmployeeAccountRefPresenter.svelte'
 import EmployeeArrayEditor from './components/EmployeeArrayEditor.svelte'
 import EmployeeBox from './components/EmployeeBox.svelte'
 import EmployeeBrowser from './components/EmployeeBrowser.svelte'
 import EmployeeEditor from './components/EmployeeEditor.svelte'
+import EmployeeFilter from './components/EmployeeFilter.svelte'
+import EmployeeFilterValuePresenter from './components/EmployeeFilterValuePresenter.svelte'
 import EmployeePresenter from './components/EmployeePresenter.svelte'
 import EmployeeRefPresenter from './components/EmployeeRefPresenter.svelte'
 import MemberPresenter from './components/MemberPresenter.svelte'
@@ -61,24 +75,18 @@ import OrganizationPresenter from './components/OrganizationPresenter.svelte'
 import PersonEditor from './components/PersonEditor.svelte'
 import PersonPresenter from './components/PersonPresenter.svelte'
 import PersonRefPresenter from './components/PersonRefPresenter.svelte'
+import SelectAvatars from './components/SelectAvatars.svelte'
 import SocialEditor from './components/SocialEditor.svelte'
 import SpaceMembers from './components/SpaceMembers.svelte'
 import UserBox from './components/UserBox.svelte'
+import UserBoxItems from './components/UserBoxItems.svelte'
 import UserBoxList from './components/UserBoxList.svelte'
 import UserInfo from './components/UserInfo.svelte'
 import UsersPopup from './components/UsersPopup.svelte'
 import ActivityChannelMessage from './components/activity/ActivityChannelMessage.svelte'
+import ActivityChannelPresenter from './components/activity/ActivityChannelPresenter.svelte'
 import ExpandRightDouble from './components/icons/ExpandRightDouble.svelte'
 import IconMembers from './components/icons/Members.svelte'
-import ChannelPresenter from './components/ChannelPresenter.svelte'
-import ChannelPanel from './components/ChannelPanel.svelte'
-import ActivityChannelPresenter from './components/activity/ActivityChannelPresenter.svelte'
-import SelectAvatars from './components/SelectAvatars.svelte'
-import UserBoxItems from './components/UserBoxItems.svelte'
-import EmployeeFilter from './components/EmployeeFilter.svelte'
-import EmployeeFilterValuePresenter from './components/EmployeeFilterValuePresenter.svelte'
-import EmployeeAccountFilterValuePresenter from './components/EmployeeAccountFilterValuePresenter.svelte'
-import DeleteConfirmationPopup from './components/DeleteConfirmationPopup.svelte'
 
 import contact from './plugin'
 import {
@@ -98,6 +106,7 @@ import {
   resolveLocation
 } from './utils'
 
+export * from './utils'
 export { employeeByIdStore, employeesStore } from './utils'
 export {
   Channels,
@@ -254,8 +263,6 @@ export interface PersonLabelTooltip {
   props?: any
 }
 
-export * from './utils'
-
 export default async (): Promise<Resources> => ({
   actionImpl: {
     KickEmployee: kickEmployee,
@@ -321,9 +328,19 @@ export default async (): Promise<Resources> => ({
     ) => await queryContact(contact.class.Organization, client, query, filter)
   },
   function: {
-    GetFileUrl: getFileUrl,
-    GetGravatarUrl: getGravatarUrl,
-    GetColorUrl: (uri: string) => uri,
+    GetFileUrl: (file: string, size: IconSize, fileName?: string) => {
+      return [
+        getFileUrl(file, size, fileName),
+        getFileUrl(file, size, fileName) + ' 1x',
+        getFileUrl(file, getIconSize2x(size), fileName) + ' 2x'
+      ]
+    },
+    GetGravatarUrl: (file: string, size: IconSize, fileName?: string) => [
+      getGravatarUrl(file, size),
+      getGravatarUrl(file, size) + ' 1x',
+      getGravatarUrl(file, getIconSize2x(size)) + ' 2x'
+    ],
+    GetColorUrl: (uri: string) => [uri],
     EmployeeSort: employeeSort,
     FilterChannelInResult: filterChannelInResult,
     FilterChannelNinResult: filterChannelNinResult,
diff --git a/plugins/contact/src/index.ts b/plugins/contact/src/index.ts
index 3740537265..653de10797 100644
--- a/plugins/contact/src/index.ts
+++ b/plugins/contact/src/index.ts
@@ -81,7 +81,7 @@ export enum AvatarType {
 /**
  * @public
  */
-export type GetAvatarUrl = (uri: string, size: IconSize) => string
+export type GetAvatarUrl = (uri: string, size: IconSize) => string[]
 
 /**
  * @public
diff --git a/plugins/contact/src/utils.ts b/plugins/contact/src/utils.ts
index 2599f7b035..82cfcaee3e 100644
--- a/plugins/contact/src/utils.ts
+++ b/plugins/contact/src/utils.ts
@@ -54,7 +54,7 @@ export function getGravatarUrl (
     case 'x-small':
     case 'small':
     case 'medium':
-      width = 64
+      width = 128
       break
     case 'large':
       width = 256
@@ -62,6 +62,12 @@ export function getGravatarUrl (
     case 'x-large':
       width = 512
       break
+    case '2x-large':
+      width = 1024
+      break
+    case 'full':
+      width = 2048
+      break
   }
   return `https://gravatar.com/avatar/${gravatarId}?s=${width}&d=${placeholder}`
 }
diff --git a/plugins/login-resources/src/components/LoginApp.svelte b/plugins/login-resources/src/components/LoginApp.svelte
index 6010d6b917..e342f28495 100644
--- a/plugins/login-resources/src/components/LoginApp.svelte
+++ b/plugins/login-resources/src/components/LoginApp.svelte
@@ -101,7 +101,7 @@
     }
   }
   .back {
-    // background: url('../../img/back_signin.png');
+    background-image: url('../../img/login_back.png');
     background-image: -webkit-image-set(
       '../../img/login_back.avif' 1x,
       '../../img/login_back_2x.avif' 2x,
diff --git a/server/front/src/index.ts b/server/front/src/index.ts
index b733bc8c93..b695bcf4c7 100644
--- a/server/front/src/index.ts
+++ b/server/front/src/index.ts
@@ -491,6 +491,19 @@ export function start (
     server.close()
   }
 }
+
+// export type IconSize =
+//   | 'inline'
+//   | 'tiny'
+//   | 'card'
+//   | 'x-small'
+//   | 'smaller'
+//   | 'small'
+//   | 'medium'
+//   | 'large'
+//   | 'x-large'
+//   | '2x-large'
+//   | 'full'
 async function getResizeID (
   size: string,
   uuid: string,
@@ -502,7 +515,9 @@ async function getResizeID (
     switch (size) {
       case 'inline':
       case 'tiny':
+      case 'card':
       case 'x-small':
+      case 'smaller':
       case 'small':
       case 'medium':
         width = 64
@@ -513,6 +528,10 @@ async function getResizeID (
       case 'x-large':
         width = 512
         break
+      case '2x-large':
+        size = '2x-large_v2'
+        width = 1024
+        break
     }
     let hasSmall = false
     const sizeId = uuid + `%size%${width}`