From 37a9453917834b7fedbd640af8312e90133413d7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Greg=20Berg=C3=A9?= <greg@gitbook.io>
Date: Wed, 13 May 2026 06:49:14 +0200
Subject: [PATCH] Allow to copy in embed (#4251)

---
 .changeset/sharp-cities-care.md                 |  5 +++++
 packages/embed/src/client/createGitBookFrame.ts | 10 ++++++++++
 packages/embed/src/react/GitBookFrame.tsx       |  1 +
 packages/embed/src/standalone/index.ts          |  1 +
 4 files changed, 17 insertions(+)
 create mode 100644 .changeset/sharp-cities-care.md

diff --git a/.changeset/sharp-cities-care.md b/.changeset/sharp-cities-care.md
new file mode 100644
index 000000000..c76147c9b
--- /dev/null
+++ b/.changeset/sharp-cities-care.md
@@ -0,0 +1,5 @@
+---
+"@gitbook/embed": patch
+---
+
+Allow copying in embed
diff --git a/packages/embed/src/client/createGitBookFrame.ts b/packages/embed/src/client/createGitBookFrame.ts
index bdeb12392..fe4fa4c90 100644
--- a/packages/embed/src/client/createGitBookFrame.ts
+++ b/packages/embed/src/client/createGitBookFrame.ts
@@ -44,6 +44,16 @@ export function createGitBookFrame(iframe: HTMLIFrameElement): GitBookFrameClien
     if (!iframe.contentWindow) {
         throw new Error('Iframe must have a content window');
     }
+
+    const allowTokens = iframe.allow
+        .split(';')
+        .map((token) => token.trim())
+        .filter(Boolean);
+
+    if (!allowTokens.includes('clipboard-write')) {
+        iframe.allow = [...allowTokens, 'clipboard-write'].join('; ');
+    }
+
     const channel = createChannel(iframe.contentWindow);
 
     channel.receive((message: FrameToParentMessage) => {
diff --git a/packages/embed/src/react/GitBookFrame.tsx b/packages/embed/src/react/GitBookFrame.tsx
index c1e934e1c..e0fe7dcc0 100644
--- a/packages/embed/src/react/GitBookFrame.tsx
+++ b/packages/embed/src/react/GitBookFrame.tsx
@@ -76,6 +76,7 @@ export function GitBookFrame(props: GitBookFrameProps) {
             src={frameURL}
             width="100%"
             height="100%"
+            allow="clipboard-write"
             className={className}
             style={colorScheme ? { colorScheme } : undefined}
         />
diff --git a/packages/embed/src/standalone/index.ts b/packages/embed/src/standalone/index.ts
index 9319ff539..90faeb8fc 100644
--- a/packages/embed/src/standalone/index.ts
+++ b/packages/embed/src/standalone/index.ts
@@ -101,6 +101,7 @@ function getIframe() {
         widgetIframe?.remove();
         widgetIframe = document.createElement('iframe');
         widgetIframe.id = 'gitbook-widget-iframe';
+        widgetIframe.allow = 'clipboard-write';
         if (frameOptions?.colorScheme) {
             widgetIframe.style.colorScheme = frameOptions.colorScheme;
         }