WebP images are increasing in file size on upload

  • Hi I am creating a number of image sizes for picture uploads in my functions.php with:

    add_image_size( 'cropped', 338, 241, true);
add_image_size( 'cropped_xs', 478, 340, true);
add_image_size( 'cropped_sm', 676, 482, true);
add_image_size( 'cropped_md', 856, 610, true);
add_image_size( 'cropped_lg', 1081, 699, true);
add_image_size( 'cropped_xl', 1403, 921, true);

    When I check the WebP files after upload I notice that a lot of the pictures are much bigger in file size.

    For instance I uploaded a picture that was 1403px wide x 1000px tall and it was 83kb in size. The last 3 image sizes in the above list (cropped_md, cropped_lg, cropped_xl) produced file sizes of 84kb, 119kb and 142kb respectively.

    Does anyone know what I can put in my functions.php to stop WordPress increasing the files size like this please?

    Thanks.

    • This topic was modified 2 years, 7 months ago by cannon303.
    • This topic was modified 2 years, 7 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Developing with WordPress topic
Viewing 4 replies - 1 through 4 (of 4 total)

  • You could check to see if the file type has changed. The add_image_size creates a new image maybe it using a different format for the new image.

    I tried it with several images and the size increased on images whose size was close to the original. I don’t think they’re is much you can do add_image_size is a core function. There are some plugins in the plugin directory that will optimize your images. You might want to look at one of them.

    Thread Starter cannon303

    (@cannon303)

    Thanks for your help @mrtom414. That’s pretty poor from WordPress. I’m trying to create a super optimised site and it means I’m going to have to manually create all of the images sizes myself. Unless of course there is indeed a plugin to the rescue….

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    WordPress uses gd or imagemagick to resize images, so whatever’s happening is in those utilities or the PHP libraries used to interface with them.

Viewing 4 replies - 1 through 4 (of 4 total)
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