Note: before 1.8.31.2 mod_pagespeed did not check whether the image was The conversion is lossy but the optimized JPEG images are usually Pixels and if PageSpeed determines that they are not sensitive to compression This filter converts GIF and PNG images to JPEG if they have no transparent GIF and PNG images were converted to losslessly-encoded WebP even if theyĬould be converted to JPEG or lossily-encoded WebP.Īpache: ModPagespeedEnableFilters convert_jpeg_to_webp Nginx: pagespeed EnableFilters convert_jpeg_to_webp Convert PNG to JPEG Note: Before 1.8.31.2, if convert_to_webp_lossless was enabled, (i.e., if convert_gif_to_png and convert_png_to_jpegĪre also enabled), and if PageSpeed determines that the images are not Lossily-encoded WebP if the configuration allows them to be converted to JPEG With this filter enabled, GIF and PNG images can also be converted to This filter converts JPEG to lossily-encoded WebP format if the latter is Images, and permits incremental display by the browser.Īpache: ModPagespeedEnableFilters convert_jpeg_to_progressive Nginx: pagespeed EnableFilters convert_jpeg_to_progressive Convert JPEG to WebP Progressive format generally yields better compression for large This filter uses progressive format to encode large (more than 10KB) JPEG This filter onlyĬonverts single-frame GIFs, as PNG only supports single-frame images.Īnimated GIFs can be converted to the WebP format using theĪpache: ModPagespeedEnableFilters convert_gif_to_png Nginx: pagespeed EnableFilters convert_gif_to_png Convert JPEG to progressive That can generally achieve higher compression than GIF. This filter losslessly converts GIF images to PNG, a more recent image format ![]() Image Filter and Option Reference Filter Reference Convert GIF to PNG
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