diff --git a/packages/editor-ext/src/lib/markdown/utils/tabs.marked.ts b/packages/editor-ext/src/lib/markdown/utils/tabs.marked.ts
index 2691a27a4..ed54b78ea 100644
--- a/packages/editor-ext/src/lib/markdown/utils/tabs.marked.ts
+++ b/packages/editor-ext/src/lib/markdown/utils/tabs.marked.ts
@@ -13,7 +13,8 @@ interface TabbedToken {
   activeTabIndex: number;
 }
 
-const HEADER_RE = /^===([!+])?\s*["'“”‘’]([^"'“”‘’\n]+)["'“”‘’]\s*$/gm;
+const HEADER_RE =
+  /^===([!+])?\s*["'“”‘’]((?:\\.|[^"'“”‘’\n])+?)["'“”‘’]\s*$/gm;
 
 export const tabsExtension = {
   name: 'tabbed',
@@ -38,7 +39,7 @@ export const tabsExtension = {
         index: m.index,
         raw: m[0],
         marker: m[1] ?? '',
-        label: m[2].trim(),
+        label: unescapeTabLabel(m[2].trim()),
       });
     }
 
@@ -87,7 +88,7 @@ export const tabsExtension = {
       if (body.length > 0) {
         body = body
           .split('\n')
-          .map((line) => line.replace(/^\s{2,4}/, ''))
+          .map((line) => line.replace(/^(?:\t| {2,4})/, ''))
           .join('\n');
       }
 
@@ -137,6 +138,10 @@ export const tabsExtension = {
   },
 };
 
+function unescapeTabLabel(value: string): string {
+  return value.replace(/\\(["\\])/g, '$1');
+}
+
 function escapeHtml(value: string): string {
   return value
     .replace(/&/g, '&')
diff --git a/packages/editor-ext/src/lib/markdown/utils/turndown.utils.ts b/packages/editor-ext/src/lib/markdown/utils/turndown.utils.ts
index d48a560da..d6e5fbce4 100644
--- a/packages/editor-ext/src/lib/markdown/utils/turndown.utils.ts
+++ b/packages/editor-ext/src/lib/markdown/utils/turndown.utils.ts
@@ -69,7 +69,7 @@ function tabs(turndownService: _TurndownService) {
 
       const isNestedTabsNode =
         node.parentElement?.closest('div[data-type="tabs"]') !== null;
-        
+
       const tabBlocks = tabNodes.map((tabNode, index) => {
         const labelNode = tabNode.querySelector(
           ':scope > div[data-type="tabLabel"]',
@@ -279,15 +279,16 @@ function video(turndownService: _TurndownService) {
 function sanitizeTabLabel(value: string): string {
   return value
     .replace(/[\r\n]+/g, ' ')
+    .replace(/\\/g, '\\\\')
     .replace(/"/g, '\\"')
     .trim();
 }
 
 function indentMarkdownBlock(content: string): string {
-  if (!content) return '    ';
+  if (!content) return '\t';
 
   return content
     .split('\n')
-    .map((line) => (line.trim() ? `    ${line}` : ''))
+    .map((line) => (line.trim() ? `\t${line}` : ''))
     .join('\n');
 }
diff --git a/packages/editor-ext/src/lib/tabs/tabs.ts b/packages/editor-ext/src/lib/tabs/tabs.ts
index 6c8c3c9fa..bff636ac6 100644
--- a/packages/editor-ext/src/lib/tabs/tabs.ts
+++ b/packages/editor-ext/src/lib/tabs/tabs.ts
@@ -15,7 +15,7 @@ export interface TabsOptions {
   view: ComponentType<ReactNodeViewProps<HTMLElement>> | null;
 }
 
-const TAB_INPUT_REGEX = /^\s*===\s*["'“”‘’]([^"'“”‘’\n]+)["'“”‘’]\s+$/;
+const TAB_INPUT_REGEX = /^\s*===\s*["'“”‘’]((?:\\.|[^"'“”‘’\n])+?)["'“”‘’]\s+$/;
 
 declare module '@tiptap/core' {
   interface Commands<ReturnType> {
@@ -85,9 +85,8 @@ export const Tabs = Node.create<TabsOptions>({
       new InputRule({
         find: TAB_INPUT_REGEX,
         handler: ({ range, match }) => {
-          const label = (
-            typeof match[1] === 'string' ? match[1] : 'Tab 1'
-          ).trim();
+          const rawLabel = typeof match[1] === 'string' ? match[1] : 'Tab 1';
+          const label = rawLabel.replace(/\\(["\\])/g, '$1').trim();
 
           this.editor.commands.insertTabs(label, range);
         },
@@ -222,7 +221,10 @@ export const Tabs = Node.create<TabsOptions>({
         (pos: 'left' | 'right') =>
         ({ state, tr, dispatch }) => {
           const { $from } = state.selection;
-          const tabs = findParentNode((node) => node.type.name === this.name, $from);
+          const tabs = findParentNode(
+            (node) => node.type.name === this.name,
+            $from,
+          );
           if (!tabs || tabs.node.childCount <= 0) return false;
 
           const currentTabIndex = clampIndex(
@@ -265,7 +267,10 @@ export const Tabs = Node.create<TabsOptions>({
         (pos: 'left' | 'right') =>
         ({ state, tr, dispatch }) => {
           const { $from } = state.selection;
-          const tabs = findParentNode((node) => node.type.name === this.name, $from);
+          const tabs = findParentNode(
+            (node) => node.type.name === this.name,
+            $from,
+          );
           if (!tabs || tabs.node.childCount <= 1) return false;
 
           const currentTabIndex = clampIndex(
@@ -356,7 +361,10 @@ export const Tabs = Node.create<TabsOptions>({
         () =>
         ({ state, tr, dispatch }) => {
           const { $from } = state.selection;
-          const tabs = findParentNode((node) => node.type.name === this.name, $from);
+          const tabs = findParentNode(
+            (node) => node.type.name === this.name,
+            $from,
+          );
           if (!tabs) return false;
 
           if (tabs.node.childCount < 2) {
@@ -398,8 +406,11 @@ export const Tabs = Node.create<TabsOptions>({
         () =>
         ({ state, tr, dispatch }) => {
           const { $from } = state.selection;
-          const tabs = findParentNode((node) => node.type.name === this.name, $from);
-          if (!tabs || tabs.node.childCount < 0) return false;
+          const tabs = findParentNode(
+            (node) => node.type.name === this.name,
+            $from,
+          );
+          if (tabs?.node.childCount <= 0) return false;
 
           tr.delete(tabs.pos, tabs.pos + tabs.node.nodeSize);
 
@@ -417,12 +428,12 @@ export const Tabs = Node.create<TabsOptions>({
 
         if (!empty) return false;
         if ($from.parent.content.size > 0) return false;
-        
+
         const tabsNode = findParentNode(
           (node) => node.type.name === this.name,
           $from,
         );
-        
+
         if (!tabsNode) return false;
         return editor
           .chain()