Chrome includes a new implementation of the built-in PDF document viewer interface. The interface is notable for moving all settings to the top panel. Previously, the top panel displayed only the file name, information about pages, rotation, print, and save buttons, but now it has also incorporated the content from the sidebar, which included controls for zooming and sizing the document to the page. the ability to save edited PDF forms, as well as for two-page viewing.
To enable new features, the flags "chrome://flags#pdf-viewer-update", "chrome://flags/#pdf-form-save", and "chrome://flags/#pdf-two-up-view" are suggested.
Among the changes in Chrome, it is also worth noting by default of support for the image format (AV1 Image Format), which employs intraframe compression technologies from the AV1 video encoding format. The container for distributing compressed data in AVIF is completely analogous to HEIF. AVIF supports both HDR (High Dynamic Range) images and wide-gamut color space as well as standard dynamic range (SDR). In Firefox, experimental support for AVIF was added in version 77 (enabling it through image.avif.enabled in about:config).
Previously, the image format , which allows Google to reduce the file size of images by 25%-34% while maintaining quality on par with JPEG format. Alternative tests , that WebP is not as efficient as one would hope — when comparing it not with the benchmark encoder cjpeg from the JPEG Group, but using the more efficient encoder , the benefits of WebP are only felt at low resolutions (500px), which are most commonly used on the Web. At a resolution of 1000px, the results are almost identical, and at a resolution of 1500px, WebP even falls behind MozJPEG. AVIF significantly outperforms MozJPEG, cjpeg, and WebP in the same tests, which is why it is considered by browser manufacturers to be a more promising format.
Source: opennet.ru
