Webp Type-Support

  • watschman

    (@watschman)


    8 years, 4 months ago

    Hello
    I really like your plugin for serving different resolutions of images, so that not every mobile has to download a 4k resolution image file. The only, let’s say incovenience, I have with this plugin, is the fact that it doesn’t support webp, at least I haven’t found an option for it.
    Is it possible to add support for that, so that browsers who support it (like Chrome) can be served with webp instead of a jpg or png? If there is a simple way to achieve that by adding .htaccess Rules/Conditions, I’d appreciate it if you were to enlighten me how to achieve said webp Support. A Cronjob is already creating webp copies of every picture on the wordpress installation, also of those which your plugin created.

Viewing 2 replies - 1 through 2 (of 2 total)
  • Thread Starter watschman

    (@watschman)

    8 years, 4 months ago

    Since we are already creating the webp files via a cronjob, we simply modified your “adaptive-images-script.php” and added to you function “adaptive_images_script_send_image” the following lines as a temporary solution: 

    
if(strpos($_SERVER["HTTP_ACCEPT"], "image/webp") !== false){
  $tmp = preg_replace("/\.(jpe?g|png)$/", ".webp", $filename);
  if(file_exists($tmp)){
    $filename = $tmp;
    $extension = 'webp';
  }
  if(in_array($extension, array('png', 'gif', 'jpeg', 'webp'))){
  ...
}
    Plugin Author Takis Bouyouris

    (@nevma)

    8 years, 3 months ago

    Hello, my friend,

    Webp is indeed a very important chapter in image compression, but, as it is not uniformly supported by all modern browsers, we have chosen not to add an extra level of complexity in order to handle them in a special way.

    Your proposed solution is very simple and very smart indeed! However, it applies to your particular setup and I cannot see how it could be generalised for everyone. In addition it does add an obscurity factor because it also renames the images from .jpg to .webp.

    I guess we should wait until Webp is supported by everyone and incorporate it into the Adaptive Images plugin in the same way as the other supported formats.

    Thank you very much for chipping in your ideas!

    Cheers,
    Takis

Viewing 2 replies - 1 through 2 (of 2 total)

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