Hello friends! In October, we moved style and layout off the main thread, built a JavaScript JIT, replaced our WebAssembly engine, redesigned the browser UI, and passed Safari Technology Preview on Web Platform Tests. :^)
Ladybird is entirely funded by companies and individuals who believe in the open web. You can see everyone supporting the project on our sponsors page, and we’re grateful to all of them. If you’re interested in sponsoring, please contact us.
Browsers normally run JavaScript, style, and layout on one main thread, one at a time. While a script runs, the page can’t update. A few simple animations can keep going on the compositor, but everything else has to wait.
We moved style and layout to their own thread, and paint recording to another (#12377, #12400). They now run at the same time as JavaScript (#12396, #12432, #12460). If a script asks for layout information, like an element’s size, it waits until pending layout work is finished, so it never gets stale data.
