# Comments

> Leave comments on the canvas or on a layer, reply, mention people, resolve threads and ask AI to fix what a thread asks for.

Source: https://uxdeck.app/guide/comments (checked against uxdeck on 16 October 2026)

Comments let people talk about the design where it is. A comment sits on a spot on the canvas or on a layer, and it moves with that layer. Everyone with access to the file can comment, viewers included.

Use comments for feedback that needs an answer or a record. For a passing remark, use [cursor chat](/guide/live-cursors).

## Leave a comment

1. Press <kbd>C</kbd>, or the comment button in the toolbar.
2. Click anywhere on the canvas, or press <kbd>Enter</kbd>. On a layer, the comment says **Comment on {layer}…** and sticks to it.
3. Type, then press <kbd>Enter</kbd> to post. <kbd>Shift</kbd><kbd>Enter</kbd> starts a new line.

In a comment you can:

- **Mention** someone with <kbd>@</kbd>. They get a notification. Up to 20 mentions per comment.
- **Add pictures:** up to 5 per comment, with the picture button.
- **Add an emoji** from the emoji button.

A comment can be up to 5,000 characters.

## Reply, edit, resolve

Open a pin to see its thread. Then you can:

- reply in the **Reply** field;
- edit or delete your own comments (deleting asks first, and removes it for everyone);
- press **Resolve** when it is dealt with, and **Reopen** to bring it back.

Resolved threads are hidden from the canvas. Turn on **Show resolved** in the comment bar to see them.

## The comments list

All threads are listed in **Review**, **Comments** on the right (viewers have a **Comments** tab of their own). Use **Search** to find words, and the menu to sort or filter:

- **Sort by date** or **Sort by unread**;
- **Show resolved comments**;
- **Only your threads**, **Only current page**, **Only threads naming you**.

From each thread's menu: **Mark as read** or **Mark as unread**, and **Mark as resolved**.

## Ask AI to fix this

On a thread, press **Ask AI to fix this** (the sparkle). uxdeck AI changes the comment's screen to do what the thread asks, then replies in the thread with what it changed. A version is kept first, and **Undo AI changes** on its reply takes the changes back while keeping later edits by anyone.

It uses your [agent credits](/guide/agent-credits), and you must be signed in and able to edit the file. A team can turn it off for its files.

## Catches

- **Comments need a connection.** Offline, the bar says so and the post button waits until you are back.
- **A deleted layer leaves its comments behind.** The thread says **The layer this was on has been deleted.**
- **Limits per file:** 2,000 threads, and 500 comments in one thread.