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Don't "Accept" image/webp 的评价

Don't "Accept" image/webp 作者： jscher2000

4.4 / 5 星
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141 条评价
  • 来自 Firefox 用户 16160694， 3 年前
  • 来自 Moltres Rider， 4 年前
    Does not even deserve 1 star. False advertisement. It DOES NOT strip images of webp. EVERY PNG and JPG file STILL downloads as webp. I tried like 20 different images from like 15 websites that are clearly JPG and PNG, ALL try to save as webp.

    开发者回应

    发布于 3 年前
    When you enable the extension (stop sign showing) the Accept header should no longer list image/webp. You can check on https://www.jeffersonscher.com/res/jstest.php When you disable the extension (yellow warning triangle is showing), the extension doesn't strip out image/webp.

    If yours doesn't work either way, I can think of two possible reasons:

    (1) You are using a private window but didn't enable the extension to run in private windows. In this case, the stop sign/triangle toolbar button will be missing. See the following article to fix this problem: https://support.mozilla.org/kb/extensions-private-browsing

    (2) There is a conflict between this extension and another extension or proxy that also modifies the Accept header. This could be hard to track down.
  • 来自 Ulrich， 4 年前
  • 来自 Spazticus， 4 年前
  • 来自 treesap， 4 年前
    Soooo helpful. Part of my "essential add-ons" after installing a browser.
  • 来自 IQman， 4 年前
  • 来自 shark_bloody， 4 年前
  • 来自 EasyMoney322， 4 年前
  • 来自 Art Held， 4 年前
    Works exactly as advertised. Various websites including Reddit appear to have stopped sending me webP images. I have experienced no side-effects or problems.
  • 来自 Artyom， 4 年前
  • 来自 koenigskraut， 4 年前
  • 来自 BBlackmoor， 4 年前
  • 来自 Firefox 用户 13462509， 4 年前
    Works as expected, and allows me to reject Google's WebP format, and save images in JPG and PNG format again. Thanks!
  • 来自 Пелле， 4 年前
  • 来自 SketchLate， 4 年前
  • 来自 Shadow Maximus， 4 年前
  • 来自 Firefox 用户 16465818， 4 年前
    I have image.webp.enabled set to false, I have image/webp;q=0 in my image.http.accept, but sadly some web sites still tried to shove this Google crap down my throat…
    With this extension — not anymore!

    WebP and other "open" formats and codecs by Google shouldn't exist in the first place.
    Thank you for doing god's work with this extension!
  • 来自 syldub， 4 年前
    Good initiative. Webp is a crap.
  • 来自 Diet Laser， 4 年前
    WEBP is the worst image container format ever invented. thank you for allowing us to block them.
  • 来自 Firefox 用户 15135020， 4 年前
    100% :)
  • 来自 Bjorn Roesbeke， 4 年前
    TLDR: 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.

    Edited at 14/01/2024: changed rating 2»4; addon is not to blame for servers ignoring user preferences, as indicated in response by addon author.

    开发者回应

    发布于 4 年前
    > 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.
  • 来自 Firefox 用户 12363114， 4 年前
    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.

    开发者回应

    发布于 4 年前
    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.
  • 来自 Sly， 4 年前
    This works immediately. Thank you so much!
  • 来自 erdeebee， 4 年前
  • 来自 Cynyster， 4 年前
    Thank 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