Canvas Capture

Capture video from canvas elements

Canvas Capture - Capture video from canvas elements

Canvas Capture is a Firefox add-on that allows you to capture video from HTML canvas elements. With this add-on, you can easily navigate to a page with an animated canvas element, click the capture button, and generate a video file of the canvas animation without the need for network access.

Add-on stats

By: Chase
Users: 239
-9
Rating: 4.38
(8)
Version: 1.3.1resigned1 (Last updated: 2024-04-25)
Version code: undefined
Creation date: 2017-01-30
Weekly download count: 7
Firefox on Android: No
Risk impact: Moderate risk impact
Risk likelihood:
Manifest version: 2
Permissions:
  • activeTab
  • storage
  • notifications
  • webNavigation
  • http://*/
  • https://*/
Size: 226.59K
URLs: Website

Other platforms

Canvas Capture (v1.3.0)
5.00 (5) 1,000
Not available on Android
Not available on Edge
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Add-on 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).

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

User reviews

by DM, 2023-08-16
View all user reviews

Add-on safety

Risk impact

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

Risk likelihood

Canvas Capture is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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