diff --git a/galata/test/documentation/extension_manager.test.ts b/galata/test/documentation/extension_manager.test.ts
index 9a744d980d82..ccd96c702f73 100644
--- a/galata/test/documentation/extension_manager.test.ts
+++ b/galata/test/documentation/extension_manager.test.ts
@@ -87,7 +87,7 @@ test.describe('Extension Manager', () => {
     await openExtensionSidebar(page);
 
     await page.fill(
-      '.jp-extensionmanager-view >> [placeholder="Search"]',
+      '.jp-extensionmanager-view >> [placeholder="Search extensions"]',
       'drawio'
     );
 
diff --git a/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-default-documentation-linux.png b/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-default-documentation-linux.png
index 4b5f9e014183..5451510789c7 100644
Binary files a/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-default-documentation-linux.png and b/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-default-documentation-linux.png differ
diff --git a/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-disabled-documentation-linux.png b/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-disabled-documentation-linux.png
index ae606dd0fb51..9b89bd73ce7e 100644
Binary files a/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-disabled-documentation-linux.png and b/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-disabled-documentation-linux.png differ
diff --git a/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-enabled-documentation-linux.png b/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-enabled-documentation-linux.png
index 4e57c3bd4535..db7ed1559a01 100644
Binary files a/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-enabled-documentation-linux.png and b/galata/test/documentation/extension_manager.test.ts-snapshots/extensions-enabled-documentation-linux.png differ
diff --git a/galata/test/jupyterlab/sidebars.test.ts-snapshots/opened-sidebar-extensionmanager-main-view-jupyterlab-linux.png b/galata/test/jupyterlab/sidebars.test.ts-snapshots/opened-sidebar-extensionmanager-main-view-jupyterlab-linux.png
index fdfa55630e4d..c54bc8ec04c7 100644
Binary files a/galata/test/jupyterlab/sidebars.test.ts-snapshots/opened-sidebar-extensionmanager-main-view-jupyterlab-linux.png and b/galata/test/jupyterlab/sidebars.test.ts-snapshots/opened-sidebar-extensionmanager-main-view-jupyterlab-linux.png differ
diff --git a/packages/codeeditor/package.json b/packages/codeeditor/package.json
index 27521535730b..203aa0464c25 100644
--- a/packages/codeeditor/package.json
+++ b/packages/codeeditor/package.json
@@ -44,6 +44,7 @@
   "dependencies": {
     "@codemirror/state": "^6.2.0",
     "@jupyter/ydoc": "^1.1.1",
+    "@jupyterlab/apputils": "^4.2.0-alpha.4",
     "@jupyterlab/coreutils": "^6.1.0-alpha.4",
     "@jupyterlab/nbformat": "^4.1.0-alpha.4",
     "@jupyterlab/observables": "^5.1.0-alpha.4",
diff --git a/packages/codeeditor/src/lineCol.tsx b/packages/codeeditor/src/lineCol.tsx
index 4b47a3ee5848..0ca036cf5ba6 100644
--- a/packages/codeeditor/src/lineCol.tsx
+++ b/packages/codeeditor/src/lineCol.tsx
@@ -16,6 +16,7 @@ import {
 } from '@jupyterlab/ui-components';
 import React from 'react';
 import { CodeEditor } from './editor';
+import { DOMUtils } from '@jupyterlab/apputils';
 
 /**
  * A namespace for LineFormComponent statics.
@@ -60,6 +61,10 @@ namespace LineFormComponent {
      * Whether the form has focus.
      */
     hasFocus: boolean;
+    /**
+     * A generated ID for the input field
+     */
+    textInputId: string;
   }
 }
 
@@ -79,7 +84,8 @@ class LineFormComponent extends React.Component<
     this._trans = this.translator.load('jupyterlab');
     this.state = {
       value: '',
-      hasFocus: false
+      hasFocus: false,
+      textInputId: DOMUtils.createDomID() + '-line-number-input'
     };
   }
 
@@ -106,6 +112,7 @@ class LineFormComponent extends React.Component<
           >
             <input
               type="text"
+              id={this.state.textInputId}
               className="jp-lineFormInput"
               onChange={this._handleChange}
               onFocus={this._handleFocus}
@@ -127,7 +134,10 @@ class LineFormComponent extends React.Component<
               />
             </div>
           </div>
-          <label className="jp-lineFormCaption">
+          <label
+            className="jp-lineFormCaption"
+            htmlFor={this.state.textInputId}
+          >
             {this._trans.__(
               'Go to line number between 1 and %1',
               this.props.maxLine
diff --git a/packages/codeeditor/style/index.css b/packages/codeeditor/style/index.css
index 5754d5a02af6..12ee5dd2b20f 100644
--- a/packages/codeeditor/style/index.css
+++ b/packages/codeeditor/style/index.css
@@ -7,5 +7,6 @@
 @import url('~@lumino/widgets/style/index.css');
 @import url('~@jupyterlab/ui-components/style/index.css');
 @import url('~@jupyterlab/statusbar/style/index.css');
+@import url('~@jupyterlab/apputils/style/index.css');
 @import url('~@lumino/dragdrop/style/index.css');
 @import url('./base.css');
diff --git a/packages/codeeditor/style/index.js b/packages/codeeditor/style/index.js
index 334e1408fa3a..7ec6ea10f0c3 100644
--- a/packages/codeeditor/style/index.js
+++ b/packages/codeeditor/style/index.js
@@ -7,6 +7,7 @@
 import '@lumino/widgets/style/index.js';
 import '@jupyterlab/ui-components/style/index.js';
 import '@jupyterlab/statusbar/style/index.js';
+import '@jupyterlab/apputils/style/index.js';
 import '@lumino/dragdrop/style/index.js';
 
 import './base.css';
diff --git a/packages/codeeditor/tsconfig.json b/packages/codeeditor/tsconfig.json
index a1b61b1b79a5..06dc69dc32bb 100644
--- a/packages/codeeditor/tsconfig.json
+++ b/packages/codeeditor/tsconfig.json
@@ -6,6 +6,9 @@
   },
   "include": ["src/*"],
   "references": [
+    {
+      "path": "../apputils"
+    },
     {
       "path": "../coreutils"
     },
diff --git a/packages/codeeditor/tsconfig.test.json b/packages/codeeditor/tsconfig.test.json
index cf83def5fd55..854006dde943 100644
--- a/packages/codeeditor/tsconfig.test.json
+++ b/packages/codeeditor/tsconfig.test.json
@@ -2,6 +2,9 @@
   "extends": "../../tsconfigbase.test",
   "include": ["src/*", "test/*"],
   "references": [
+    {
+      "path": "../apputils"
+    },
     {
       "path": "../coreutils"
     },
diff --git a/packages/extensionmanager/src/widget.tsx b/packages/extensionmanager/src/widget.tsx
index f532bc5a4ce7..78335c44ef2e 100644
--- a/packages/extensionmanager/src/widget.tsx
+++ b/packages/extensionmanager/src/widget.tsx
@@ -366,7 +366,7 @@ class Header extends ReactWidget {
           )}
         </div>
         <FilterBox
-          placeholder={this.trans.__('Search')}
+          placeholder={this.trans.__('Search extensions')}
           disabled={!this.model.isDisclaimed}
           updateFilter={(fn, query) => {
             this.model.query = query ?? '';
diff --git a/packages/json-extension/src/component.tsx b/packages/json-extension/src/component.tsx
index 974dfe6abec9..ba3d88fdeb85 100644
--- a/packages/json-extension/src/component.tsx
+++ b/packages/json-extension/src/component.tsx
@@ -75,7 +75,7 @@ export class Component extends React.Component<IProps, IState> {
         <InputGroup
           className="filter"
           type="text"
-          placeholder={trans.__('Filter…')}
+          placeholder={trans.__('Find…')}
           onChange={this.handleChange}
           value={this.state.value}
           rightIcon="ui-components:search"
diff --git a/packages/lsp-extension/package.json b/packages/lsp-extension/package.json
index 1690d7edba4f..5046f38ffebd 100644
--- a/packages/lsp-extension/package.json
+++ b/packages/lsp-extension/package.json
@@ -37,6 +37,7 @@
   },
   "dependencies": {
     "@jupyterlab/application": "^4.1.0-alpha.4",
+    "@jupyterlab/apputils": "^4.2.0-alpha.4",
     "@jupyterlab/lsp": "^4.1.0-alpha.4",
     "@jupyterlab/running": "^4.1.0-alpha.4",
     "@jupyterlab/settingregistry": "^4.1.0-alpha.4",
diff --git a/packages/lsp-extension/src/renderer.tsx b/packages/lsp-extension/src/renderer.tsx
index 5d4a81d29011..f11da159fdac 100644
--- a/packages/lsp-extension/src/renderer.tsx
+++ b/packages/lsp-extension/src/renderer.tsx
@@ -6,7 +6,8 @@ import { ITranslator, TranslationBundle } from '@jupyterlab/translation';
 import { closeIcon } from '@jupyterlab/ui-components';
 import { UUID } from '@lumino/coreutils';
 import { Debouncer } from '@lumino/polling';
-import React, { useState } from 'react';
+import React, { useRef, useState } from 'react';
+import { DOMUtils } from '@jupyterlab/apputils';
 
 import type { FieldProps } from '@rjsf/utils';
 type TDict = { [key: string]: any };
@@ -203,6 +204,9 @@ function BuildSettingForm(props: ISettingFormProps): JSX.Element {
     any,
     [hash: string, property: ISettingProperty]
   >(setProperty);
+  const textInputId = useRef<string>(
+    DOMUtils.createDomID() + '-line-number-input'
+  );
   return (
     <div className="array-item">
       <div className="form-group ">
@@ -212,11 +216,15 @@ function BuildSettingForm(props: ISettingFormProps): JSX.Element {
               <div className="form-group small-field">
                 <div className="jp-modifiedIndicator jp-errorIndicator"></div>
                 <div className="jp-FormGroup-content">
-                  <h3 className="jp-FormGroup-fieldLabel jp-FormGroup-contentItem">
+                  <label
+                    htmlFor={textInputId.current}
+                    className="jp-FormGroup-fieldLabel jp-FormGroup-contentItem"
+                  >
                     {props.trans.__('Server name:')}
-                  </h3>
+                  </label>
                   <div className="jp-inputFieldWrapper jp-FormGroup-contentItem">
                     <input
+                      id={textInputId.current}
                       className="form-control"
                       type="text"
                       required={true}
diff --git a/packages/lsp-extension/style/index.css b/packages/lsp-extension/style/index.css
index e3cf1bc566f7..c6530154f90c 100644
--- a/packages/lsp-extension/style/index.css
+++ b/packages/lsp-extension/style/index.css
@@ -5,6 +5,7 @@
 
 /* This file was auto-generated by ensurePackage() in @jupyterlab/buildutils */
 @import url('~@jupyterlab/ui-components/style/index.css');
+@import url('~@jupyterlab/apputils/style/index.css');
 @import url('~@jupyterlab/application/style/index.css');
 @import url('~@jupyterlab/lsp/style/index.css');
 @import url('~@jupyterlab/running/style/index.css');
diff --git a/packages/lsp-extension/style/index.js b/packages/lsp-extension/style/index.js
index 880237ff55cf..942a28edb6f7 100644
--- a/packages/lsp-extension/style/index.js
+++ b/packages/lsp-extension/style/index.js
@@ -5,6 +5,7 @@
 
 /* This file was auto-generated by ensurePackage() in @jupyterlab/buildutils */
 import '@jupyterlab/ui-components/style/index.js';
+import '@jupyterlab/apputils/style/index.js';
 import '@jupyterlab/application/style/index.js';
 import '@jupyterlab/lsp/style/index.js';
 import '@jupyterlab/running/style/index.js';
diff --git a/packages/lsp-extension/tsconfig.json b/packages/lsp-extension/tsconfig.json
index 3e5ee632c0bd..014d801a2415 100644
--- a/packages/lsp-extension/tsconfig.json
+++ b/packages/lsp-extension/tsconfig.json
@@ -9,6 +9,9 @@
     {
       "path": "../application"
     },
+    {
+      "path": "../apputils"
+    },
     {
       "path": "../lsp"
     },
diff --git a/packages/settingeditor/src/pluginlist.tsx b/packages/settingeditor/src/pluginlist.tsx
index d6629cdcb0c4..416358205453 100644
--- a/packages/settingeditor/src/pluginlist.tsx
+++ b/packages/settingeditor/src/pluginlist.tsx
@@ -451,7 +451,7 @@ export class PluginList extends ReactWidget {
         <FilterBox
           updateFilter={this.setFilter}
           useFuzzyFilter={false}
-          placeholder={trans.__('Search…')}
+          placeholder={trans.__('Search settings…')}
           forceRefresh={false}
           caseSensitive={false}
           initialQuery={this._query}
diff --git a/packages/shortcuts-extension/src/components/TopNav.tsx b/packages/shortcuts-extension/src/components/TopNav.tsx
index 44c80f468d80..7483f933da2f 100644
--- a/packages/shortcuts-extension/src/components/TopNav.tsx
+++ b/packages/shortcuts-extension/src/components/TopNav.tsx
@@ -162,6 +162,7 @@ export class TopNav extends React.Component<ITopNavProps> {
           <Symbols />
           <InputGroup
             className="jp-Shortcuts-Search"
+            aria-label={trans.__('Search shortcuts')}
             type="text"
             onChange={event => this.props.updateSearchQuery(event)}
             placeholder={trans.__('Search…')}
diff --git a/yarn.lock b/yarn.lock
index 264b1721b0fb..3eab467b4321 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2506,6 +2506,7 @@ __metadata:
   dependencies:
     "@codemirror/state": ^6.2.0
     "@jupyter/ydoc": ^1.1.1
+    "@jupyterlab/apputils": ^4.2.0-alpha.4
     "@jupyterlab/coreutils": ^6.1.0-alpha.4
     "@jupyterlab/nbformat": ^4.1.0-alpha.4
     "@jupyterlab/observables": ^5.1.0-alpha.4
@@ -3820,6 +3821,7 @@ __metadata:
   resolution: "@jupyterlab/lsp-extension@workspace:packages/lsp-extension"
   dependencies:
     "@jupyterlab/application": ^4.1.0-alpha.4
+    "@jupyterlab/apputils": ^4.2.0-alpha.4
     "@jupyterlab/lsp": ^4.1.0-alpha.4
     "@jupyterlab/running": ^4.1.0-alpha.4
     "@jupyterlab/settingregistry": ^4.1.0-alpha.4