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Reviews for Don't "Accept" image/webp

Don't "Accept" image/webp by jscher2000

4.3 Stars out of 5
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151 reviews
  • by Firefox user 13522932, 2 years ago
    Great extension. Thank you.
  • by Niklas C, 2 years ago
    I haven't tried this extensively, but when I drag an image from Firefox to file explorer it is saved as a jpg, but it's still a WebP image only with a renamed extension. Not working as intended.

    Developer response

    posted 2 years ago
    Hi Niklas, if you right-click > Open Image in New Tab before dragging, the tab should tell you the true format (hold your mouse over the tab to see the full tooltip).

    You can test using https://i2.wp.com/radical-mag.com/wp-content/uploads/2019/08/@Test-BMW-320d-8.jpg -- normally, if you hover your mouse over the tab, it will say it is a WEBP image; with the extension enabled, it should be a JPG image.

    If it doesn't work on that one, check whether it's the private window issue: https://support.mozilla.org/kb/extensions-private-browsing

    If you want to send me some problem URLs, you can create an issue at https://github.com/jscher2000/dont-accept-webp/issues or email me at jscher2000@outlook.com.
  • by DN, 2 years ago
  • by cryptidhuntah, 2 years ago
    Should be a default Firefox feature.
  • by Hamstro, 2 years ago
    Does what it says!
  • by Firefox user 17985675, 2 years ago
  • by POIZOG, 2 years ago
  • by fixedrate144, 2 years ago
  • by cgatrip, 2 years ago
    Doesn't seem to do anything at all, even after closing and restarting Firefox.

    Developer response

    posted 2 years ago
    You can test using https://i2.wp.com/radical-mag.com/wp-content/uploads/2019/08/@Test-BMW-320d-8.jpg -- normally, if you hover your mouse over the tab, it will say it is a WEBP image; with the extension enabled, it should be a JPG image.

    If it doesn't work on that one, check whether it's the private window issue: https://support.mozilla.org/kb/extensions-private-browsing

    If you want to send me some problem URLs, you can create an issue at https://github.com/jscher2000/dont-accept-webp/issues or email me at jscher2000@outlook.com.
  • by b?, 2 years ago
    In a world where some sites lossily convert into webm to save 10kB of bandwidth, this is a godsend. Thank you.
  • by smow, 2 years ago
    It used to work pretty fine but for some time it doesn't work at all. Still all webp images are accepted.
  • by Ericb45696, 2 years ago
    It's worked great for the most part for years now but seems to not work on some sites for whatever reasons. Updated, and I tried changing settings back and forth but some sites it just does not work on. Imgur for example, it wont work if I'm on the main page, but if I go ahead and click on an image and then try it , it works. odd. Seem to be finding more sites it just does not work on lately, but it still works on most at least.
  • by Firefox user 16639115, 2 years ago
  • by ergosteur, 2 years ago
  • by Firefox user 17875336, 2 years ago
    Doesn't seem to work. I've selected strip webp and avif, but both the developer console and https://www.whatismybrowser.com/detect/what-http-headers-is-my-browser-sending say I'm still sending webp and avif in the Accept header.

    Edit: Strangely, toggling the "Run in Private Windows" to "Allow" and back to "Don't allow" (which is my desired setting) fixed the issue, even though I always ran the tests in normal browsing instead of private browsing. I'm unable to replicate this for a proper bug report, but just a FYI for others facing similar issues.

    Developer response

    posted 2 years ago
    In case you are using private windows, make sure you enabled the add-on to run in private windows: https://support.mozilla.org/kb/extensions-private-browsing

    If that's not the problem, hmm, could there be a conflict with a different extension that also modifies request headers?
  • by The Virginian, 2 years ago
    Installed it and tried to save an image and it immediately didn't work. Useless

    Developer response

    posted 2 years ago
    What this add-on does is remove a signal that Firefox normally sends to the server that your browser can handle WebP images. The idea is to discourage the server from sending WebP in place of JPEG or PNG.

    I'm not sure what problem you ran into with saving an image not working, but do you mean you still got a WebP image? That definitely can happen when the site insists on sending you one, or when the page is using a "picture" tag, but this add-on should help on most sites.

    If you need an add-on to convert a WebP image to something else, check out https://addons.mozilla.org/firefox/addon/save-webp-as-png-or-jpeg/
  • by Firefox user 5544567, 2 years ago
  • by Firefox user 16562696, 2 years ago
    Does exactly what it's meant to do, 5 stars.
  • by Typical_User, 2 years ago
    I just downloaded it and it seems perfect. Thank you!!
  • by Firefox user 13873945, 3 years ago
    This is the sort of thing that should be available to toggle in about:config, but I'm glad this extension exists (and does the job well)
  • by Jason, 3 years ago
    It works. I've been growing increasingly annoyed with the number of sites defaulting to webp and after switching to FF found this gem of an extension on a whim. The majority will settle for webp, I'll take my original formatted files, thanks.
  • by Álvaro González, 3 years ago
    It does one thing and it does it right. Code is simple and doesn't do anything dodgy.
  • by NicePixel, 3 years ago
  • by keejmilxyz, 3 years ago
  • by shrl, 3 years ago