WebP is such a goated format

Re:WebP is such a goated format by Donckele on Wednesday April 13, 2022 @01:04AM (#31011372)

OT but I just hate that firefox converts images to webp by default. The downloaded file is NOT whats at that URL. Having another format to deal with and not well supported is super annoying. I tried once to disable this in the “advanced settings” but it broke something and had to revert. Please have a simple checkbox in the standard settings page and have it disabled by default!

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Re:WebP is such a goated format by tbran on Wednesday April 13, 2022 @09:33AM (#31014447)

Some website backends have multiple image formats available. Their frontend will tell the browser to load webp preferentially with code like this. Browsers that don't support webp will just fall back to jpeg or whatever.

The html looks something like this:

  <figure>
    <picture>

      <!-- Load webp if browser supports it -->
      <source media="(max-width: 500px)"
              data-srcset="image.webp"
              type="image/webp">
   
      <!-- Load jpg if browser doesn't support webp -->
      <source media="(max-width: 500px)"
              data-srcset="image.jpg"
              type="image/jpeg">

      <!-- Fallback to this -->
      <img src="image.jpg">

    </picture>
  </figure>

I process images on upload to be available in multiple sizes and formats. I serve webp first since the (normally) smaller size makes the page faster for users.

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Re:WebP is such a goated format by NavinF on Wednesday April 13, 2022 @01:14AM (#31011418)

Source? Are you absolutely certain that the webserver is not transparently converting jpeg to webp and serving it under the same url? Cause that’s how every bug report about FF saving images as webp ends up getting resolved.

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Re:WebP is such a goated format by unicornporn on Wednesday April 13, 2022 @01:11AM (#31011409)

It does not convert. But if you don't want WebPs, use:

https://addons.mozilla.org/en-US/firefox/addon/dont-accept-w...

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Re:WebP is such a goated format by RolloTom on Wednesday April 13, 2022 @02:41AM (#31011840)

In case you don't want to install an extension, search in about:config for "image.webp.enabled" and set it to false. Worth mentioning, there's also a "image.avif.enabled" entry.

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Re:WebP is such a goated format by unicornporn on Sunday April 17, 2022 @02:18AM (#31058922)

That is not the same thing. This addon does not modify "image.webp.enabled" or "image.avif.enabled", it modifies the accept header. If you modify the preferences you mention you will still be served AVIF and WebP, but viewing will break...

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Re:WebP is such a goated format by Moru on Wednesday April 13, 2022 @02:28AM (#31011774)

Thankyou, friends have been complaining about this for a while so now I can help them :-)

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Re:WebP is such a goated format by bscphil on Wednesday April 13, 2022 @01:11AM (#31011407)

> firefox converts images to webp by default

No it doesn't. What are you referring to?

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Re:WebP is such a goated format by exmadscientist on Wednesday April 13, 2022 @01:12AM (#31011412)

It doesn't convert them, but when it makes an additional request to download the file, the server might (depending on MIME hell, etc.) send back a different format. This is real and annoying.

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