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

Log in
Add-on icon

Reviews for WebP / Avif image converter

WebP / Avif image converter by Nullbrains

4 Stars out of 5
5
71
4
13
3
9
2
7
1
17
117 reviews
  • by Holic Shot, 4 years ago
    Seems like good addon that does what it says, however, I specifically needed to convert animated WEBP to animated GIF and this addon will only convert to JPG or PNG from WEBP. If at all possible, please add this ability! I'm also not sure why this sort of addon needs permission to 'access your data for all websites.' Be careful when choosing to install this.

    Developer response

    posted 4 years ago
    These kind of addons require the 'access your data for all websites' to get access to the image that needs to be converted. The permission structure of add-ons does not allow for a less intrusive permission to get this information. I am looking into adding support for animated images, however this is much harder than converting a static image so I can not give an estimate when it is ready.
  • by discord37, 4 years ago
    Thank you! Webp has been driving me nuts, I like to save most images as jpg.
  • by maxwork, 4 years ago
    Windows 7. Firefox Developer 84. Everything is work. Thanks!
  • by Firefox user 13236554, 4 years ago
  • by GW333, 4 years ago
  • by Pouria P, 4 years ago
  • by Firefox user 14086767, 4 years ago
    not work, can converter only for png/jpg. cannot converter for other format
  • by gbolcer, 4 years ago
    Using Windows 10 as a platform, but any time I share a downloaded image, my friends, slack users can't use it. I've been manually converting using ImageMagick convert *.webp *.jpg, but that got tedious. This plugin is an extremely convenient workaround for what should be a setting in Firefox. Thank you!
  • by Morgan, 4 years ago
    you saved my life
  • by Uncle Spellbinder, 4 years ago
    Does exactly what it says. PERFECT!
  • by Firefox user 16139483, 4 years ago
    sort of works but won't download gifv/webp to animated gif which is what I wanted it for. No option to save webp as gif, either
  • by GenDemo, 4 years ago
    Great and easy to use no problem. I love how you can set the settings for different source file type.
    It would be great with this new stupid webp format, if you either had 2 options to save as .gif or as .jpg; or if it detected automatically if it was an image or a gif.
    Thnx though
  • by ghandolhagen, 4 years ago
  • by rch427, 4 years ago
  • by Tsiox, 4 years ago
    Not working for me, it save webp as an empty file with the name" 100". =(
  • by AnttiRyt, 4 years ago
  • by Firefox user 15459854, 5 years ago
    does NOT convert the MOST COMMON which is webp to GIF as in tumblr etc.
  • by vampirombie, 5 years ago
    wish this extension would convert webp to gif :(
  • by Jiří Macich ml., 5 years ago
  • by Firefox user 15975174, 5 years ago
  • by wildbilltx, 5 years ago
    Does not work on Windows 7.
  • by what0080, 5 years ago
  • by rado84, 5 years ago
    All of the sliders for image quality don't work and I for one have no use of a PNG with low quality. Fix that and I might rate it with 5 stars.
  • by Firefox user 14217099, 5 years ago
  • by Cherwally, 5 years ago
    It will be nice if the contextual option will appear only when right click on active conversion types!
    Like example i only need WEBP to PNG, but i don't need the contextual menu on any right click.