If youre a regular reader of Firefox release notes (and thank you if you are!) youre probably aware of just how much weve invested in the performance of Firefox Quantum. We launched an entirely new engine in November , made significant improvements to graphics rendering in January , and are continuing to post performance gains and add features with this release. On Firefox for desktop, weve improved page load times, added tools to annotate and crop your Firefox Screenshots, and made it easier to arrange your Top Sites on the Firefox Home page. On Firefox for Android, weve added support for sites that stream video using the HLS protocol.