Canvas Capture

Capture video from canvas elements
What is Canvas Capture?
Canvas Capture is a Chrome extension that allows users to capture video from HTML canvas elements. Users just need to navigate to a page, identify the animated canvas element and hit capture. The program allows previewing of the captured videos before download. The extension mainly uses the MediaRecorder, MediaStream, and Blob APIs to generate the video files.

Extension stats

Users: 1,000+
Rating: 5.00 (4)
Version: 1.3.0 (Last updated: 2019-03-28)
Creation date: 2019-03-27
Risk impact: Moderate risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
Permissions:
  • activeTab
  • storage
  • notifications
  • webNavigation
  • http://*/
  • https://*/
Size: 218.11K

Other platforms

Canvas Capture (v1.3.1resigned1)
4.38 (8) 267
Not available on Edge
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Extension summary

The Canvas Capture extension allows video to be captured from HTML canvas elements.

Currently, video is only output in the webm container in the browser's choice of codec (typically VPX).

To use, simply navigate to a page with an animated canvas element and click the extension's browser action (toolbar button). A list of canvases present on the page will be displayed with some details about each one. Click the capture button next to the canvas that should be captured. When finished, click the stop button and a link will be generated to download the resulting video file (the file is constructed using Blobs; no network access is required).

Captured videos can be previewed before they are downloaded. By default, videos are remuxed using libwebm in WebAssembly to produce a more useful video file that is seekable and shows a duration and progress in video players.

Canvas Capture produces video files of canvas elements using the MediaRecorder, MediaStream and Blob APIs.

User reviews

this is beyond my expectation. thankyou.
by shakatu scam, 2024-09-07

Works great when other ways failed!
by Brad Jasper, 2024-04-10

Super helpfull! Thanks!
View all user reviews

Extension safety

Risk impact

Canvas Capture requires a few sensitive permissions. Exercise caution before installing.

Risk likelihood

Canvas Capture has earned a good reputation and can be trusted.

Upgrade to see risk analysis details

Promo images

Canvas Capture small promo image
Small promo image

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