Files
rrweb/docs/recipes/canvas.md
Justin Halsall aab4c553cb docs: revamp installation docs for esm and umd (#1788)
* docs: revamp installation docs for esm and umd

Document recommended install paths across the main guides and package
READMEs for rrweb, @rrweb/all, @rrweb/record, @rrweb/replay, and
rrweb-player.

Clarify three usage modes: bundler/npm, browser no-build with
import maps and +esm, and legacy UMD fallback.

* Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Apply formatting changes

* Apply suggestion from @eoghanmurray

Co-authored-by: Eoghan Murray <eoghan@getthere.ie>

* Apply formatting changes

* docs(all): streamline README usage section

Move the guide link next to the import example and remove the
duplicated Usage section to keep docs concise and easier to scan.

* docs(readme): update gzip size badges in zh-cn readme

* docs(plugins): update readme imports to scoped esm packages

Replace `rrweb` default imports and `rrweb.Replayer` usage with
`@rrweb/record` `record` and `@rrweb/replay` `Replayer` in plugin
usage examples.

Also update canvas WebRTC plugin imports to scoped `@rrweb/*`
package names to keep docs aligned with current package structure.

* docs: update docs to prefer scoped esm packages

replace `rrweb` default import examples with `@rrweb/record` and
`@rrweb/replay` across recipes and guides in en/zh-CN.

clarify package selection for new integrations, add `@rrweb/all`
convenience guidance, and refresh CDN/style import snippets for ESM and legacy UMD compatibility.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Eoghan Murray <eoghan@getthere.ie>
2026-04-01 12:00:00 +08:00

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# Canvas
Canvas is a special HTML element, and will not be recorded by rrweb by default.
There are some options for recording and replaying Canvas.
Enable recording Canvas
```js
import { record } from '@rrweb/record';
record({
emit(event) {},
recordCanvas: true,
});
```
Alternatively enable image snapshot recording of Canvas at a maximum of 15 frames per second
```js
import { record } from '@rrweb/record';
record({
emit(event) {},
recordCanvas: true,
sampling: {
canvas: 15,
},
// optional image format settings
dataURLOptions: {
type: 'image/webp',
quality: 0.6,
},
});
```
Enable replaying Canvas
```js
import { Replayer } from '@rrweb/replay';
const replayer = new Replayer(events, {
UNSAFE_replayCanvas: true,
});
replayer.play();
```
**Enable replaying Canvas will remove the sandbox, which may cause a potential security issue.**
Alternatively you can stream canvas elements via webrtc with the [rrweb-plugin-canvas-webrtc-record](../../packages/plugins/rrweb-plugin-canvas-webrtc-record/) & [rrweb-plugin-canvas-webrtc-replay](../../packages/plugins/rrweb-plugin-canvas-webrtc-replay) plugins.
For more information see [canvas-webrtc documentation](../../packages/plugins/rrweb-plugin-canvas-webrtc-record/Readme.md)