diff --git a/packages/lexical-devtools-core/src/generateContent.ts b/packages/lexical-devtools-core/src/generateContent.ts
index b08eb2ec777..5e431558d26 100644
--- a/packages/lexical-devtools-core/src/generateContent.ts
+++ b/packages/lexical-devtools-core/src/generateContent.ts
@@ -67,6 +67,8 @@ const FORMAT_PREDICATES = [
     node.hasFormat('superscript') && 'Superscript',
   (node: TextNode | RangeSelection) =>
     node.hasFormat('underline') && 'Underline',
+  (node: TextNode | RangeSelection) =>
+    node.hasFormat('highlight') && 'Highlight',
 ];
 
 const FORMAT_PREDICATES_PARAGRAPH = [
@@ -78,6 +80,7 @@ const FORMAT_PREDICATES_PARAGRAPH = [
   (node: ParagraphNode) => node.hasTextFormat('subscript') && 'Subscript',
   (node: ParagraphNode) => node.hasTextFormat('superscript') && 'Superscript',
   (node: ParagraphNode) => node.hasTextFormat('underline') && 'Underline',
+  (node: ParagraphNode) => node.hasTextFormat('highlight') && 'Highlight',
 ];
 
 const DETAIL_PREDICATES = [
diff --git a/packages/lexical-playground/__tests__/e2e/CopyAndPaste/html/TextFormatHTMLCopyAndPaste.spec.mjs b/packages/lexical-playground/__tests__/e2e/CopyAndPaste/html/TextFormatHTMLCopyAndPaste.spec.mjs
index 4a6363168f6..c957e2ed59e 100644
--- a/packages/lexical-playground/__tests__/e2e/CopyAndPaste/html/TextFormatHTMLCopyAndPaste.spec.mjs
+++ b/packages/lexical-playground/__tests__/e2e/CopyAndPaste/html/TextFormatHTMLCopyAndPaste.spec.mjs
@@ -70,4 +70,39 @@ test.describe('HTML CopyAndPaste', () => {
       `,
     );
   });
+
+  test('Copy + paste html with highlight formatting', async ({
+    page,
+    isPlainText,
+  }) => {
+    test.skip(isPlainText);
+    await focusEditor(page);
+    const clipboardData = {
+      'text/html': `<meta charset='utf-8'><p><b>Bold</b><mark>Highlight</mark><b><mark>Bold&amp;Highlight</mark></b></p>`,
+    };
+    await pasteFromClipboard(page, clipboardData);
+    await assertHTML(
+      page,
+      html`
+        <p
+          class="PlaygroundEditorTheme__paragraph PlaygroundEditorTheme__ltr"
+          dir="ltr">
+          <strong
+            class="PlaygroundEditorTheme__textBold"
+            data-lexical-text="true">
+            Bold
+          </strong>
+          <mark data-lexical-text="true">
+            <span class="PlaygroundEditorTheme__textHighlight">Highlight</span>
+          </mark>
+          <mark data-lexical-text="true">
+            <strong
+              class="PlaygroundEditorTheme__textBold PlaygroundEditorTheme__textHighlight">
+              Bold&amp;Highlight
+            </strong>
+          </mark>
+        </p>
+      `,
+    );
+  });
 });
diff --git a/packages/lexical-playground/src/images/icons/highlighter.svg b/packages/lexical-playground/src/images/icons/highlighter.svg
new file mode 100644
index 00000000000..01d88ddeac6
--- /dev/null
+++ b/packages/lexical-playground/src/images/icons/highlighter.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-highlighter" viewBox="0 0 16 16"><path fill-rule="evenodd" d="M11.096.644a2 2 0 0 1 2.791.036l1.433 1.433a2 2 0 0 1 .035 2.791l-.413.435-8.07 8.995a.5.5 0 0 1-.372.166h-3a.5.5 0 0 1-.234-.058l-.412.412A.5.5 0 0 1 2.5 15h-2a.5.5 0 0 1-.354-.854l1.412-1.412A.5.5 0 0 1 1.5 12.5v-3a.5.5 0 0 1 .166-.372l8.995-8.07zm-.115 1.47L2.727 9.52l3.753 3.753 7.406-8.254zm3.585 2.17.064-.068a1 1 0 0 0-.017-1.396L13.18 1.387a1 1 0 0 0-1.396-.018l-.068.065zM5.293 13.5 2.5 10.707v1.586L3.707 13.5z"/></svg>
\ No newline at end of file
diff --git a/packages/lexical-playground/src/index.css b/packages/lexical-playground/src/index.css
index a6c9d65c267..1728fe26053 100644
--- a/packages/lexical-playground/src/index.css
+++ b/packages/lexical-playground/src/index.css
@@ -406,6 +406,10 @@ i.superscript {
   background-image: url(images/icons/type-superscript.svg);
 }
 
+i.highlight {
+  background-image: url(images/icons/highlighter.svg);
+}
+
 i.link {
   background-image: url(images/icons/link.svg);
 }
diff --git a/packages/lexical-playground/src/plugins/ToolbarPlugin/index.tsx b/packages/lexical-playground/src/plugins/ToolbarPlugin/index.tsx
index b32d841c7ec..4478e606958 100644
--- a/packages/lexical-playground/src/plugins/ToolbarPlugin/index.tsx
+++ b/packages/lexical-playground/src/plugins/ToolbarPlugin/index.tsx
@@ -539,6 +539,7 @@ export default function ToolbarPlugin({
   const [isStrikethrough, setIsStrikethrough] = useState(false);
   const [isSubscript, setIsSubscript] = useState(false);
   const [isSuperscript, setIsSuperscript] = useState(false);
+  const [isHighlight, setIsHighlight] = useState(false);
   const [isCode, setIsCode] = useState(false);
   const [canUndo, setCanUndo] = useState(false);
   const [canRedo, setCanRedo] = useState(false);
@@ -585,6 +586,7 @@ export default function ToolbarPlugin({
       setIsStrikethrough(selection.hasFormat('strikethrough'));
       setIsSubscript(selection.hasFormat('subscript'));
       setIsSuperscript(selection.hasFormat('superscript'));
+      setIsHighlight(selection.hasFormat('highlight'));
       setIsCode(selection.hasFormat('code'));
       setIsRTL($isParentElementRTL(selection));
 
@@ -1052,6 +1054,16 @@ export default function ToolbarPlugin({
               <i className="icon superscript" />
               <span className="text">Superscript</span>
             </DropDownItem>
+            <DropDownItem
+              onClick={() => {
+                activeEditor.dispatchCommand(FORMAT_TEXT_COMMAND, 'highlight');
+              }}
+              className={'item ' + dropDownActiveClass(isHighlight)}
+              title="Highlight"
+              aria-label="Format text with a highlight">
+              <i className="icon highlight" />
+              <span className="text">Highlight</span>
+            </DropDownItem>
             <DropDownItem
               onClick={clearFormatting}
               className="item"
diff --git a/packages/lexical-playground/src/themes/PlaygroundEditorTheme.css b/packages/lexical-playground/src/themes/PlaygroundEditorTheme.css
index 8ce73790114..53fdcecf9cc 100644
--- a/packages/lexical-playground/src/themes/PlaygroundEditorTheme.css
+++ b/packages/lexical-playground/src/themes/PlaygroundEditorTheme.css
@@ -51,6 +51,13 @@
 .PlaygroundEditorTheme__textBold {
   font-weight: bold;
 }
+.PlaygroundEditorTheme__paragraph mark {
+  background-color: unset;
+}
+.PlaygroundEditorTheme__textHighlight {
+  background: rgba(255, 212, 0, 0.14);
+  border-bottom: 2px solid rgba(255, 212, 0, 0.3);
+}
 .PlaygroundEditorTheme__textItalic {
   font-style: italic;
 }
diff --git a/packages/lexical-playground/src/themes/PlaygroundEditorTheme.ts b/packages/lexical-playground/src/themes/PlaygroundEditorTheme.ts
index e5bed6c2c9d..8d052686f62 100644
--- a/packages/lexical-playground/src/themes/PlaygroundEditorTheme.ts
+++ b/packages/lexical-playground/src/themes/PlaygroundEditorTheme.ts
@@ -107,6 +107,7 @@ const theme: EditorThemeClasses = {
   text: {
     bold: 'PlaygroundEditorTheme__textBold',
     code: 'PlaygroundEditorTheme__textCode',
+    highlight: 'PlaygroundEditorTheme__textHighlight',
     italic: 'PlaygroundEditorTheme__textItalic',
     strikethrough: 'PlaygroundEditorTheme__textStrikethrough',
     subscript: 'PlaygroundEditorTheme__textSubscript',
diff --git a/packages/lexical/src/nodes/LexicalTextNode.ts b/packages/lexical/src/nodes/LexicalTextNode.ts
index fad639a1c72..8f7ecc9378b 100644
--- a/packages/lexical/src/nodes/LexicalTextNode.ts
+++ b/packages/lexical/src/nodes/LexicalTextNode.ts
@@ -579,6 +579,10 @@ export class TextNode extends LexicalNode {
         conversion: convertTextFormatElement,
         priority: 0,
       }),
+      mark: () => ({
+        conversion: convertTextFormatElement,
+        priority: 0,
+      }),
       s: () => ({
         conversion: convertTextFormatElement,
         priority: 0,
@@ -1284,6 +1288,7 @@ const nodeNameToTextFormat: Record<string, TextFormatType> = {
   code: 'code',
   em: 'italic',
   i: 'italic',
+  mark: 'highlight',
   s: 'strikethrough',
   strong: 'bold',
   sub: 'subscript',