Don't "Accept" image/webp

This extension removes image/webp and/or image/avif from the list of formats Firefox tells sites that it accepts. That discourages many servers from replacing JPEG and PNG images with WebP/AVIF. (But some may send them anyway; they aren't blocked.)

Total ratings

4.45 (Rating count: 137)

Review summary

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Works as intended and efficiently saves images in original formats like jpg and png.
  • Convenient for users who find the webp format frustrating.
  • Easy to install and use.
  • Helps to avoid unnecessary conversions between formats.
Cons
  • Doesn't always prevent webp or avif formats from being served.
  • Recent version requests suspicious permissions that raise security concerns.
  • Some users report it no longer works on specific sites.
Most mentioned
  • Issues with the webp format.
  • Concerns about security and permissions.
  • Effectiveness in saving images in original formats.
See reviews for Don't "Accept" image/webp on Firefox Browser Add-ons
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Recent reviews

Recent rating average: 4.60
All time rating average: 4.45
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Rating filters

5 star
82% (116)
4 star
4% (5)
3 star
1% (2)
2 star
2% (3)
1 star
11% (15)
Date Author Rating Comment
2024-11-12 Firefox user 18285487 Great idea. Lossless WebP is generally a superior alternative to Png (except it cannot handle HQs beyond 16k on a side), but when you get served a webp on a web site, there is a 95% chance it is just a Jpg that has gone through another round of lossy compression, a different type, at a lower bit rate = worse quality (fewer fine details). In an ideal world, the digital master would be encoded as both Jpg/Png and Jxl, and the browser would have an option built in to preference one format over the other. JpegXl is the best new format. Jpeg2000 was decent but I don't think any browsers support it, and it even has a lossless format.
2024-09-17 blahblah Doesn't work.
2024-09-16 Firefox user 13807639 TipTop, endlich wieder vernünftige Datei-endungen
2024-09-03 64fanatic Modern internet gets worse every day.
2024-08-21 Dan
2024-08-17 lucianoinso Works as intended!
2024-08-08 oguz
2024-07-25 NBA20 Works as intended. Thank you very much jscher2000
2024-07-24 Brixter Good
2024-05-01 Shela
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