Reviews for Don't "Accept" image/webp
Don't "Accept" image/webp by jscher2000
Rated 5 out of 5
Use this extension to prevent Firefox from saving New York Times images as webp. Works great, thank you.
22 reviews
- by Bjorn Roesbeke, 3 days agoRated 2 out of 5TLDR: This addon genuinly tries to do what it promises but Firefox defaults + servers = useless addon.
The addon does something, but it's not resulting in refusal of webp images.
By clicking the "W" button on the toolbar, the sent "Accept" headers either include or don't include "image/webp", but it's of no use at all if the default following is "*/*".
It's possible to change the value of the "image.http.accept" key in "about:config" to (for example)
image/png,image/jpeg;q=1
but this addon will then not be able to change this value anymore.
Furthermore, websites such as Youtube (Google in general) just plain refuse to offer anything but webp, even if Firefox does not indicate support for it in the "Accept" header. You may need to fool these websites in assuming you're using an old browser by changing or emptying the "general.useragent.override" key.Developer response
posted 3 days ago> The addon does something, but it's not resulting in refusal of webp images. ...
> Furthermore, websites such as Youtube (Google in general) just plain refuse to offer anything but webp, even if Firefox does not indicate support for it in the "Accept" header.
Hi Bjorn, the purpose of this extension is to discourage server farms from re-compressing PNG and JPEG images as WebP images on the fly to save bandwidth, since this complicates saving in the original formats. It is not a goal of this extension to prevent sites designed to serve WebP images from doing so.
> You may need to fool these websites in assuming you're using an old browser by changing or emptying the "general.useragent.override" key.
That might work, but some sites might serve less useful pages, so you'll have to test and see what is the best compromise. - by Firefox user 12363114, 8 days agoRated 2 out of 5Worked 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 8 days agoThe 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. - by erdeebee, 2 months agoRated 5 out of 5
- by Cynyster, 2 months agoRated 5 out of 5Thank you so much for this add-on. I could rant all day about how the webp and the gifv formats are a pain in the ass. But I am surprised not a single image application is adding support for these formats. Not counting MS Paint which seems to do webp. How did all these sites suddenly add support for these formats when no editors have? Until I can view these files in my Directory Opus and ACDSEE and can freely convert from one to another I don't need or want it.
Again! Well done on this addon - by Fluboxer, 2 months agoRated 5 out of 5I hate webp. Imagine having to do extra step no one asked about before you can send image to your friend?
Well, this addon works well with reddit - by yarrmateys, 2 months agoRated 5 out of 5with this extension websites like wikia and such that offer webp in addition to other extensions will finally send the proper file. no more webp pseudo drm to prevent/make it harder for users to download and use normal images.
- by Misha, 3 months agoRated 5 out of 5
- by Firefox user 13615449, 4 months agoRated 5 out of 5Using this to download images from Reddit and other websites without that stupid webp format. Why you do this, Firefox?
- by Firefox user 13777193, 4 months agoRated 5 out of 5
- by cemcgill, 5 months agoRated 5 out of 5
- by yeboia, 6 months agoRated 5 out of 5
- by Firefox user 15575698, 6 months agoRated 5 out of 5
- by eobet, 6 months agoRated 5 out of 5
- by Firefox user 16161025, 7 months agoRated 5 out of 5Thank you i was tired for that file type.
Now google want to monopolize the images... - by vacanter, 7 months agoRated 5 out of 5
- by Firefox user 16109083, 8 months agoRated 5 out of 5