search

mozilla-services / screenshots

Firefox Screenshots: the best way to take screenshots on the web.
https://screenshots.firefox.com
Mozilla Public License 2.0
620 stars 128 forks source link

Full screenshot of long page is incomplete #5428

Open upsuper opened 4 years ago

upsuper commented 4 years ago

For example, open https://html.spec.whatwg.org/ wait it to fully load, and try to take the full page screenshot of this page.

On my machine, it only gets to section 1.4, but the page is apparently much longer than that.

I'm on Firefox 74, and Ubuntu 19.10.

jaredhirsch commented 4 years ago

Screenshots uses a single canvas to capture screen contents, so the height is limited to the height of a canvas, around 32k pixels.

upsuper commented 4 years ago

Is it possible to capture the content into multiple images to overcome this limitation? That would probably be enough for many people.

(And with that data available, the next step could be to compile an image concatenater to wasm and run it to generate the final image.)