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
113
4
8
3
1
2
3
1
17
142 reviews
  • by JMS, 3 years ago
    Simple and effective. It tells the server that you can't read webp formats so that web server sends you JPG or PNG. You can also tell it not to send avif files. I don't have a problem with webp/avif, but websites are recompressing lossy formats (JPG) to these new formats and that I don't like.
  • by Firefox user 15100465, 3 years ago
    Saves me from needing to crop screenshots of webpages
  • by TheKingAmes, 3 years ago
    thank you! webp drives me crazy on tumblr. finally back to the gifs! XD
  • by saint23thomas, 3 years ago
  • by The Disintegrator, 3 years ago
    Thank you Thank you Thank you!
    webp might be nice to allow smaller images, but when I want to download them it's a pain. Almost no program knows how to handle webp images

    Any chance you can make is work in FF mobile? pretty please

    Developer response

    posted 3 years ago
    Someone once told me how to test extensions on mobile but it was a bit beyond me. The code is open source, so someone who knows the ropes certainly could port it over.
  • by Zachario, 3 years ago
    Fantastic. Works exactly as described so far, only issue I ran into is you have to restart firefox for it to work after installing, but this might be a thing with all addons.
    Don't mind the 1-star reviews: some people just aren't very smart and they put the blame on the program rather than the user.
  • by Mark Simon, 3 years ago
    Worked perfectly. I have it turned off by default because, obviously, the new formats are better, but sometimes I need the older formats for compatibility.
  • by Firefox user 17480034, 3 years ago
  • by ratSprite, 3 years ago
  • by happysurf, 3 years ago
  • by Rutena, 3 years ago
  • by Firefox user 16837898, 3 years ago
  • by maskedmanatee, 3 years ago
  • by SunnyTD, 3 years ago
  • by Alter, 3 years ago
    Overall very nice to have. Recently I've had to disable it though as it's been causing issues blocking me from accessing Patreon. Could we get a way to exempt certain sites from the addon in the future?

    Edit: Haven't heard anything from Patreon yet, but thank you for the exemption ability and being so open and responsive to feedback! Zero problems, have that 5th star!

    Developer response

    posted 3 years ago
    UPDATE: Added an exemption for Patreon (patreon.com, www.patreon.com) in version 0.8. Hope that works for you.

    ----

    Thank you for the suggestion. I looked at how to do it and there is are a lot of user interface bits to build out, so it's going to take a little while.

    Meanwhile, I don't know why a website would be concerned about the changes to the Accept header -- perhaps they look suspicious when image/webp and/or image/avif is removed? If you hear anything from Patreon about it, please let me know.
  • by Firefox user 17358023, 3 years ago
    Doesn't uninstall properly. Had to reinstall Firefox to unbreak pages using .webp

    Developer response

    posted 3 years ago
    That's strange. Disabling the extension should prevent it from making any changes. Any chance that the "image.webp.enabled" preference somehow got set to false in about:config? (I don't recommend setting that preference to false.)
  • by Vimto, 3 years ago
    Where it can, does what it says on the tin and removes this annoying 'improvent' - thanks muchly.
  • by marickiya, 3 years ago
    Absolutely beautiful. I've finally found the thing that solves my image search nightmare that is the WebP. Thank you!
  • by SkylarPhoenix, 3 years ago
    9gag still saves as webp and when I copy image and paste it, it still pastes it as webp

    Developer response

    posted 3 years ago
    From what I can see, 9gag uses a newer method of image substitution: a picture tag listing both webp and jpg options, and Firefox is choosing webp. This extension can't help with that issue. Currently, I recommend behind! to work with that design: https://addons.mozilla.org/firefox/addon/behind/
  • by Firefox user 17276228, 3 years ago
    Excellent, get rid of webp, heic and all that proprietary rubbish. Stop ruining the web and computing, else in a few years nothing will work any more !
  • by arandor, 3 years ago
    Works great. Thank you for solving this annoyance!
  • by DaxDraggon, 3 years ago
  • by Paulgi, 3 years ago
    This addon is a dream that comes true for anyone who hates webp. :)
  • by Nico, 3 years ago
  • by Yuhara, 3 years ago