Draw the whole page in Firefox for the rendering a capture can send #2

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opened 2026-09-29 12:34:23 +00:00 by tiagoagueda · 0 comments

tiagoagueda commented

2026-09-29 12:34:23 +00:00

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Drawing the whole page in Firefox. browser.tabs.captureTab(tabId, {rect, scale}) takes a rectangle in page coordinates, which may make a whole-page picture possible without scrolling and stitching; check it against pages with fixed headers and lazily loaded images, and on Firefox for Android, where tabs.captureTab behaves differently.
Permissions. Whatever the drawing needs must be declared in the Firefox manifest this repository assembles, and explained in the listing text addons.mozilla.org shows.
The size limit the server states (rendering_max_bytes) is checked before sending, as on Chromium.

Done when the Firefox package sends a whole-page rendering to a server that accepts one, and nothing more to one that does not.

The issue on the source repository: postulo/postulo-chromium#2.

The source of this extension is postulo/postulo-chromium, which carries the issue for sending a rendering of the captured page (postulo/postulo#256 on the server). This issue is the part that belongs to the Firefox package: - **Drawing the whole page in Firefox.** `browser.tabs.captureTab(tabId, {rect, scale})` takes a rectangle in page coordinates, which may make a whole-page picture possible without scrolling and stitching; check it against pages with fixed headers and lazily loaded images, and on Firefox for Android, where `tabs.captureTab` behaves differently. - **Permissions.** Whatever the drawing needs must be declared in the Firefox manifest this repository assembles, and explained in the listing text addons.mozilla.org shows. - **The size limit** the server states (`rendering_max_bytes`) is checked before sending, as on Chromium. Done when the Firefox package sends a whole-page rendering to a server that accepts one, and nothing more to one that does not. The issue on the source repository: postulo/postulo-chromium#2.

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2026-09-29 12:34:23 +00:00