Canvas Capture

Capture video from canvas elements

Canvas Capture: Capture Video from Canvas Elements

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.
Install from Chrome Web Store

Extension stats

Users: 1,000+
Rating: 5.00
(5)
Version: 1.3.0 (Last updated: 2019-03-28)
Version code: 1.3.0
Creation date: 2019-03-27
Manifest version: 2
Permissions:
  • activeTab
  • storage
  • notifications
  • webNavigation
  • http://*/
  • https://*/
Size: 218.11K

Other platforms

Not available on Android
Canvas Capture (v1.3.1resigned1)
4.38 (8) 287
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

Does its job, works as expected, the only thing I'd like to be added is hiding the "Select a canvas to capture" menu when recording.
by Kubík Augustýn, 2024-12-04

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

Works great when other ways failed!
by Brad Jasper, 2024-04-10
View all user reviews

Extension safety

Risk impact

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

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

We don't have sufficient data to confidently determine the risk likelihood of Canvas Capture. Use it at your own risk.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
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Promo images

Canvas Capture small promo image
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