Windows 7+ users on 64-bit OS can select 32-bit or 64-bit versions in the stub installer.Reader Mode now displays estimated reading time for the page.Lightweight themes are now applied in private browsing windows.Two new ‘compact’ themes available in Firefox, dark and light, based on the Firefox Developer Edition theme.Improved graphics stability for Windows users with the addition of compositor process separation (Quantum Compositor).The new display: flow-root value, which achieves similar results to clearfix, is also supported. Masks can be configured to use either luminance (white pixels correspond to fully visible pixels while black pixels render the area transparent) or alpha values for occlusion (transparent pixels in the mask cause transparent pixels in the element). Masks work by overlaying images or other graphics that define which regions of an element should be visible, translucent, or transparent. Firefox 53 also removes support for 32-bit Firefox on macOS, as well as for older Pentium 4 and Opteron CPUs on Linux.ĭevelopers meanwhile will want to know that Firefox 53 supports positioned CSS Masks, which allow authors to partially or fully hide visual elements within a webpage. Furthermore, HTML5 media will not autoplay by default until you switch to that tab.Īlso worth noting is that Windows users can now select between 32-bit and 64-bit Firefox during installation. Speaking of redesigns, the controls for video and audio HTML5 content have received a modern look. To change a site’s permissions, just click the ‘i’ icon in the Awesome Bar. When you visit a website that wants to access sensitive hardware or send you a notification, you’ll get a dialog box that explicitly highlights the permissions that site is requesting. ![]() The Quantum Compositor will be enabled for about 70 percent of Firefox users: those on Windows 7, Windows 8, and Windows 10 running on computers with graphics cards from Intel, Nvidia, or AMD.įirefox has received a redesigned interface for granting and managing a website’s permissions. ![]() In fact, Mozilla found that the Quantum Compositor reduced browser crashes by about 10 percent. This means Firefox is faster, because the Quantum Compositor runs on the GPU instead of the CPU, and more stable, since occasional bugs in underlying device drivers that cause crashes no longer bring down all of Firefox or even your current tab. The graphics compositor, which determines what you see on your screen by flattening into one image all the layers of graphics that the browser computes, now runs in a separate process. Next, as part of Mozilla’s plans to build a next-generation browser engine ( Project Quantum) that takes full advantage of modern hardware, the company today shipped the Quantum Compositor for Windows.
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