diff --git a/src/app/editor/EditorWorkspace.tsx b/src/app/editor/EditorWorkspace.tsx
index 9a2fc4e5..68a1fa53 100644
--- a/src/app/editor/EditorWorkspace.tsx
+++ b/src/app/editor/EditorWorkspace.tsx
@@ -1,6 +1,6 @@
 'use client';
 
-import React, { useState } from 'react';
+import React, { useId, useState } from 'react';
 import dynamic from 'next/dynamic';
 import { sanitizeHtml } from '@/utils/sanitize';
 
@@ -17,16 +17,29 @@ const RichContentEditor = dynamic(
 export function EditorWorkspace() {
   const [content, setContent] = useState('<p>Start editing...</p>');
   const [isPreviewMode, setIsPreviewMode] = useState(false);
+  const workspaceTitleId = useId();
+  const editorPanelId = useId();
+  const previewPanelId = useId();
+  const editorHelpId = useId();
+  const liveRegionId = useId();
 
   return (
-    <div className="container mx-auto max-w-6xl p-8">
-      <div className="mb-6 flex items-center justify-between">
-        <h1 className="text-3xl font-bold text-gray-800 dark:text-white">
-          Advanced Content Editor Demo
-        </h1>
+    <main aria-labelledby={workspaceTitleId} className="container mx-auto max-w-6xl p-8">
+      <div className="mb-6 flex items-center justify-between gap-4">
+        <div>
+          <h1 id={workspaceTitleId} className="text-3xl font-bold text-gray-800 dark:text-white">
+            Post Editor
+          </h1>
+          <p id={editorHelpId} className="mt-2 text-sm text-gray-600 dark:text-gray-300">
+            Create accessible post content with keyboard-friendly formatting controls and a preview
+            mode for reviewing published output.
+          </p>
+        </div>
         <button
+          type="button"
           onClick={() => setIsPreviewMode((prev) => !prev)}
           aria-pressed={isPreviewMode}
+          aria-controls={isPreviewMode ? previewPanelId : editorPanelId}
           className={`rounded-lg px-4 py-2 font-medium transition-colors ${
             isPreviewMode
               ? 'bg-blue-600 text-white hover:bg-blue-700'
@@ -37,15 +50,29 @@ export function EditorWorkspace() {
         </button>
       </div>
 
+      <p id={liveRegionId} className="sr-only" aria-live="polite">
+        {isPreviewMode ? 'Preview mode is active.' : 'Editor mode is active.'}
+      </p>
+
       {isPreviewMode ? (
-        <div className="prose prose-lg max-w-none min-h-[calc(100vh-200px)] rounded-xl border border-gray-200 bg-white p-8 shadow-sm dark:prose-invert dark:border-gray-700 dark:bg-gray-800">
+        <section
+          id={previewPanelId}
+          aria-labelledby={workspaceTitleId}
+          aria-describedby={editorHelpId}
+          className="prose prose-lg max-w-none min-h-[calc(100vh-200px)] rounded-xl border border-gray-200 bg-white p-8 shadow-sm dark:prose-invert dark:border-gray-700 dark:bg-gray-800"
+        >
           <div dangerouslySetInnerHTML={{ __html: sanitizeHtml(content) }} />
-        </div>
+        </section>
       ) : (
-        <div className="mb-8">
+        <section
+          id={editorPanelId}
+          aria-labelledby={workspaceTitleId}
+          aria-describedby={editorHelpId}
+          className="mb-8"
+        >
           <RichContentEditor initialContent={content} onUpdate={setContent} />
-        </div>
+        </section>
       )}
-    </div>
+    </main>
   );
 }
diff --git a/src/components/editor/ContentTemplateLibrary.tsx b/src/components/editor/ContentTemplateLibrary.tsx
index 53929e89..33180bbb 100644
--- a/src/components/editor/ContentTemplateLibrary.tsx
+++ b/src/components/editor/ContentTemplateLibrary.tsx
@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { useId } from 'react';
 import { BookOpen, Layout, ListChecks, FileVideo } from 'lucide-react';
 import { Editor } from '@tiptap/react';
 import { TEMPLATES, insertTemplate } from '@/utils/editorUtils';
@@ -8,6 +8,8 @@ interface ContentTemplateLibraryProps {
 }
 
 export const ContentTemplateLibrary: React.FC<ContentTemplateLibraryProps> = ({ editor }) => {
+  const headingId = useId();
+
   if (!editor) return null;
 
   const getIcon = (id: string) => {
@@ -27,10 +29,13 @@ export const ContentTemplateLibrary: React.FC<ContentTemplateLibraryProps> = ({
 
   return (
     <aside
-      aria-label="Content templates"
+      aria-labelledby={headingId}
       className="p-4 bg-gray-50 dark:bg-gray-900 border-l border-gray-200 dark:border-gray-700 h-full w-64 hidden lg:block"
     >
-      <h3 className="font-semibold text-sm text-gray-500 uppercase mb-4 tracking-wider">
+      <h3
+        id={headingId}
+        className="font-semibold text-sm text-gray-500 uppercase mb-4 tracking-wider"
+      >
         Templates
       </h3>
       <div className="space-y-2">
diff --git a/src/components/editor/MediaEmbedder.tsx b/src/components/editor/MediaEmbedder.tsx
index d64e1239..fa051ae1 100644
--- a/src/components/editor/MediaEmbedder.tsx
+++ b/src/components/editor/MediaEmbedder.tsx
@@ -1,4 +1,4 @@
-import React, { useState } from 'react';
+import React, { useId, useState } from 'react';
 import { Image as ImageIcon, Youtube as YoutubeIcon } from 'lucide-react';
 import { sanitizeUrl } from '@/utils/sanitize';
 
@@ -12,8 +12,10 @@ export const MediaEmbedder: React.FC<MediaEmbedderProps> = ({ onAddImage, onAddY
   const [url, setUrl] = useState('');
   const [type, setType] = useState<'image' | 'youtube'>('image');
   const [urlError, setUrlError] = useState('');
-  const dialogTitleId = 'media-embedder-title';
-  const errorId = 'media-embedder-error';
+  const id = useId();
+  const dialogTitleId = `${id}-title`;
+  const errorId = `${id}-error`;
+  const inputId = `${id}-url`;
 
   const handleSubmit = (e: React.FormEvent) => {
     e.preventDefault();
@@ -36,6 +38,7 @@ export const MediaEmbedder: React.FC<MediaEmbedderProps> = ({ onAddImage, onAddY
     return (
       <div className="flex gap-2">
         <button
+          type="button"
           onClick={() => {
             setType('image');
             setIsOpen(true);
@@ -47,6 +50,7 @@ export const MediaEmbedder: React.FC<MediaEmbedderProps> = ({ onAddImage, onAddY
           <ImageIcon className="w-5 h-5" aria-hidden="true" />
         </button>
         <button
+          type="button"
           onClick={() => {
             setType('youtube');
             setIsOpen(true);
@@ -73,11 +77,11 @@ export const MediaEmbedder: React.FC<MediaEmbedderProps> = ({ onAddImage, onAddY
           Add {type === 'image' ? 'Image' : 'YouTube Video'}
         </h3>
         <form onSubmit={handleSubmit}>
-          <label htmlFor="media-url" className="sr-only">
+          <label htmlFor={inputId} className="sr-only">
             {type === 'image' ? 'Image URL' : 'YouTube video URL'}
           </label>
           <input
-            id="media-url"
+            id={inputId}
             type="url"
             value={url}
             onChange={(e) => {
diff --git a/src/components/editor/RichContentEditor.tsx b/src/components/editor/RichContentEditor.tsx
index 7c39e679..491297fd 100644
--- a/src/components/editor/RichContentEditor.tsx
+++ b/src/components/editor/RichContentEditor.tsx
@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { useId } from 'react';
 import { EditorContent } from '@tiptap/react';
 import {
   Bold,
@@ -27,8 +27,15 @@ export const RichContentEditor: React.FC<RichContentEditorProps> = ({
   initialContent,
   onUpdate,
 }) => {
+  const editorTitleId = useId();
+  const editorDescriptionId = useId();
+  const toolbarId = useId();
+  const editorRegionId = useId();
+
   const { editor, addImage, addYoutubeVideo } = useContentEditor({
     initialContent,
+    ariaLabelledBy: editorTitleId,
+    ariaDescribedBy: `${editorDescriptionId} ${toolbarId}`,
     onUpdate,
   });
 
@@ -50,6 +57,7 @@ export const RichContentEditor: React.FC<RichContentEditorProps> = ({
     title?: string;
   }) => (
     <button
+      type="button"
       onClick={onClick}
       disabled={disabled}
       aria-pressed={isActive}
@@ -64,12 +72,24 @@ export const RichContentEditor: React.FC<RichContentEditorProps> = ({
   );
 
   return (
-    <div className="flex h-[calc(100vh-100px)] bg-white dark:bg-gray-800 rounded-xl shadow-sm border border-gray-200 dark:border-gray-700 overflow-hidden">
+    <section
+      aria-labelledby={editorTitleId}
+      className="flex h-[calc(100vh-100px)] rounded-xl border border-gray-200 bg-white shadow-sm dark:border-gray-700 dark:bg-gray-800 overflow-hidden"
+    >
       <div className="flex flex-col flex-1 w-full min-w-0">
+        <div className="sr-only">
+          <h2 id={editorTitleId}>Post editor</h2>
+          <p id={editorDescriptionId}>
+            Use the formatting toolbar before the editor to style post content. The editor supports
+            multiline text, headings, lists, quotes, code blocks, images, and YouTube embeds.
+          </p>
+        </div>
         {/* Toolbar */}
         <div
+          id={toolbarId}
           role="toolbar"
           aria-label="Text formatting"
+          aria-controls={editorRegionId}
           className="flex items-center justify-between p-2 border-b border-gray-200 dark:border-gray-700 bg-gray-50 dark:bg-gray-900 overflow-x-auto"
         >
           <div className="flex items-center gap-1">
@@ -164,16 +184,13 @@ export const RichContentEditor: React.FC<RichContentEditorProps> = ({
         </div>
 
         {/* Editor Content */}
-        <div
-          className="flex-1 overflow-y-auto bg-white dark:bg-gray-800"
-          aria-label="Post content editor"
-        >
+        <div id={editorRegionId} className="flex-1 overflow-y-auto bg-white dark:bg-gray-800">
           <EditorContent editor={editor} className="h-full p-8" />
         </div>
       </div>
 
       {/* Sidebar - Template Library */}
       <ContentTemplateLibrary editor={editor} />
-    </div>
+    </section>
   );
 };
diff --git a/src/hooks/useContentEditor.tsx b/src/hooks/useContentEditor.tsx
index a759c117..2fd135c6 100644
--- a/src/hooks/useContentEditor.tsx
+++ b/src/hooks/useContentEditor.tsx
@@ -10,14 +10,31 @@ import { sanitizeHtml, sanitizeUrl } from '@/utils/sanitize';
 interface UseContentEditorProps {
   initialContent?: string;
   placeholder?: string;
+  ariaLabel?: string;
+  ariaLabelledBy?: string;
+  ariaDescribedBy?: string;
   onUpdate?: (content: string) => void;
 }
 
 export const useContentEditor = ({
   initialContent = '',
   placeholder = 'Start writing your content...',
+  ariaLabel = 'Post content editor',
+  ariaLabelledBy,
+  ariaDescribedBy,
   onUpdate,
 }: UseContentEditorProps) => {
+  const editorAttributes: Record<string, string> = {
+    role: 'textbox',
+    'aria-multiline': 'true',
+    'aria-placeholder': placeholder,
+    spellcheck: 'true',
+    class:
+      'prose prose-sm sm:prose lg:prose-lg xl:prose-xl mx-auto min-h-[300px] p-4 focus:outline-none focus-visible:ring-2 focus-visible:ring-blue-500/40',
+    ...(ariaLabelledBy ? { 'aria-labelledby': ariaLabelledBy } : { 'aria-label': ariaLabel }),
+    ...(ariaDescribedBy ? { 'aria-describedby': ariaDescribedBy } : {}),
+  };
+
   const editor = useEditor(
     {
       extensions: [
@@ -32,6 +49,8 @@ export const useContentEditor = ({
         }),
         Placeholder.configure({
           placeholder,
+          emptyEditorClass:
+            'before:content-[attr(data-placeholder)] before:text-gray-400 before:dark:text-gray-500 before:float-left before:h-0 before:pointer-events-none',
         }),
       ],
       immediatelyRender: false,
@@ -44,13 +63,10 @@ export const useContentEditor = ({
       },
       // Ensure responsiveness and consistency
       editorProps: {
-        attributes: {
-          class:
-            'prose prose-sm sm:prose lg:prose-lg xl:prose-xl mx-auto focus:outline-none min-h-[300px] p-4',
-        },
+        attributes: editorAttributes,
       },
     },
-    [initialContent, placeholder, onUpdate],
+    [initialContent, placeholder, ariaLabel, ariaLabelledBy, ariaDescribedBy, onUpdate],
   ); // Added dependency array
 
   const addImage = useCallback(