eldk edited a comment on issue #1857: firefox 65 png and gif files do not convert to webp, though jpg does. URL: https://github.com/apache/incubator-pagespeed-mod/issues/1857#issuecomment-570905873 Hello, > @eldk same thing with MS Edge. [Can I use ](https://caniuse.com/#feat=webp)say that version 18 is webp capable, but don´t send accept: image/webp thus no convert to webp mages. I think the next Edge release (15 january 2020), that is build on chromium, will have the good accept-header. That was the case last summer with Edge insider https://www.google.com/amp/s/www.theverge.com/platform/amp/2019/11/4/20942038/microsoft-edge-chromium-release-date-new-logo-features . I can't test it now, no windows device. https://blogs.windows.com/msedgedev/2020/01/15/upgrading-new-microsoft-edge-79-chromium/ https://docs.microsoft.com/en-us/microsoft-edge/web-platform/user-agent-string Finally that was a request to a jpeg pictures with some Chromium Edge early release made in october 2019 : ``` [18/Oct/2019:14:12:20 +0200] "GET /somepicture.jpg.pagespeed.ic.EH0bMcKsU5rahAt9APR3.webp HTTP/2.0" 200 17116 "https://www.domain.tld/page.html"; "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.50 Safari/537.36 Edg/78.0.276.17" 357 17458 ``` So, I think that this will be OK with Edg/79, no trace of this UA in my logs for the moment. Eric
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