To use these add-ons, you'll need to download Firefox.

Log in
Add-on icon

Reviews for Don't "Accept" image/webp

Don't "Accept" image/webp by jscher2000

4,4 Stars out of 5
5
110
4
7
3
1
2
3
1
16
3 reviews
  • by MadBat, 'n jaar gelede
    New version doesn't work anymore.
    Any picture I try to save from nexusmod is shown as webp.
    Ex https://www.nexusmods.com/skyrimspecialedition/mods/24791
    Or more specifically: https://staticdelivery.nexusmods.com/mods/1704/images/24791/24791-1554680316-435236928.png
    Clearly a png which is what I get from chrome. But FF gives me this crap webp even with this add-on

    Developer response

    posted 'n jaar gelede
    Yes, the NexusMods site ignores the change made by this add-on. But for me, the .png file saved from Chrome is the same WEBP file -- with a .png extension.

    If you hear of any way to fool the site, I can try to implement it. Until then, when you are viewing the image in its own tab, you can get Firefox to download it as a PNG by using the built-in screenshot tool. Either right-click the blank area above/below the image > Take Screenshot, or use the keyboard shortcut (on Windows, Ctrl+Shift+S). Then move the mouse toward the upper left of the image and a dashed rectangle should appear around the image. Click to select the image, then click the Download button. The file name is a mess, but it will be a true PNG file.
  • by Logan06, 'n jaar gelede
    This add-on now wants some very strange permissions. It is apparently to prevent conflict with another add-on but I don't see why these permissions are required for that. I'd be very cautious of this for the time being

    Developer response

    posted 'n jaar gelede
    Hi, there is one new permission in version 0.9, the "management" permission, which allows checking the names of your installed add-ons and whether they are enabled or disabled. You can see the added code in the comparison page on Github: https://github.com/jscher2000/dont-accept-webp/commit/25eea9332a3819f5d0c9c224b7178bd3db830694

    If anyone prefers to install the previous version, you can grab it from the All Versions page at: https://addons.mozilla.org/firefox/addon/dont-accept-webp/versions/

    And if you do not trust me, don't run my add-ons.
  • by Firefox user 12363114, 4 jaar gelede
    Worked for about 5 minutes and then failed, allowing webp files through. I thought it was great while it lasted. It might be that the web site anticipated the add-in and bypassed it's functionality of not recommending webp images.

    Developer response

    posted 4 jaar gelede
    The extension should discourage servers from recompressing JPG and PNG images as WebP images -- typically without changing the file name/extension. Can you share a URL of a page that recompresses JPG and PNG images despite the extension? Perhaps I can figure out a workaround.

    In case the problem is cached images from a previous visit to the page, you can clear Firefox's web cache: https://support.mozilla.org/kb/how-clear-firefox-cache

    Note: the extension doesn't block pages like https://developers.google.com/speed/webp/gallery1 from using WebP images when they are part of the design.