Otter Potter

Side Canvas for ChatGPT

ChatGPT retired Canvas in May 2026. Side Canvas puts your document back beside the chat, in the browser's side panel. Select a sentence and ask ChatGPT to change just that part, review the change, and keep every version.

Coming to Chrome, Edge and Firefox. Free to try: 10 edits a day. Pro is $9.99 once.

What it does

  • Edit the part you pickSelect a sentence or paragraph and ChatGPT changes only that. Leave nothing selected to edit the whole document.
  • Review every changeRemoved words in red, new words in green. Accept or discard.
  • Canvas's shortcuts, backSuggest edits, length, reading level, final polish and emojis for writing; review, add logs, add comments, fix bugs and port to another language for code. Or type any request.
  • Version historyEvery accepted change saves the version before it. Restore any one; restoring can be undone too.
  • Open any answerAn "Open in Side Canvas" button under each ChatGPT answer opens it as a document.
  • Your own ChatGPTRequests go to ChatGPT in your open tab, with your account. No API key, no extra AI subscription.

Questions

Is this made by OpenAI?
No. Side Canvas is an independent extension by Otter Potter and is not affiliated with, endorsed by, or sponsored by OpenAI.
How does it ask ChatGPT?
It types your request into ChatGPT's message box in your chatgpt.com tab and sends it, so you'll see it in the chat, just like Canvas edits appeared there. It never touches a message you're in the middle of writing.
Where are my documents?
In your browser only. Nothing is sent to us. See the privacy policy.
What does Pro add?
Unlimited ChatGPT edits (free is 10 a day) and 100 versions per document (free keeps 3). $9.99 once, no subscription.
Something else?
Email dgraciano8424@gmail.com.