browser.tabs.captureVisibleTab is undefined in firefox manifest v3, even after adding “<all_urls>” under host_permissions and “activeTab” under permissions. Any help would be appreciated if I am missing something.

It’s a permission problem: Firefox MV3 treats all host permissions as optional. You need to jump through a few hoops to use tabs.captureVisibleTab() Install the test extension: captureVisibleTab.zip (1.5 KB) Click the action icon to download a screenshot of the active tab. Because the exte…

This may be a good time to mention that there is also an issue to allow screenshots with “activeTab” only permission (same as in Chrome and Safari). [image] 1784920 - Add `activeTab` as permission for `tabs.captureVisibleTab` API NEW (nobody) in WebExtensions - General. Last updated 2023…

thanks Hans, it worked, and I was able to automate these permissions using browser.permissions.request({origins: [’<all_urls>’]})

browser.tabs.captureVisibleTab not working in firefox for mv3

Add-ons Development

juraj.masiar (Juraj Masiar) September 28, 2023, 7:51pm 3

This may be a good time to mention that there is also an issue to allow screenshots with “activeTab” only permission (same as in Chrome and Safari).

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browser.tabs.captureVisibleTab not working Add-on Support	0	555	September 28, 2023
Any way to get a screenshot of non-active tabs? Development	6	1395	March 21, 2020
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Screenshots without tab Development	2	529	August 17, 2019

browser.tabs.captureVisibleTab not working in firefox for mv3

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