Allow user-uploaded WebP images everywhere in Drupal by default: image fields, media library, text editors

The Needs Review Queue Bot → tested this issue. It either no longer applies to Drupal core, or fails the Drupal core commit checks. Therefore, this issue status is now "Needs work".

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needs re-roll for 10.1 or/and MR needs retarget

Re-roll the patch For 10.1 version .

Added reroll for 10.1.x.

Added reroll for 10.1.x.

Hiding patches #15 (missing tests) and #16 (missing part of fix)

Also not sure if there should be additional tests or not? Will defer to others.

adding new patch for drupal 10.1 as earlier patches were incomplete, please review.

The last submitted patch, 19: 3282679-19.patch, failed testing. View results →

Fixed Tests on #19.

Is there any way to do an audit of existing widget configuration to make sure webp is the default across the board?

Hey! Thank you for working on this issue!
I learnt a few days ago that AVIF was a serious challenger of WebP. Today, it's supported everywhere but on Edge so it's maybe not the most urgent format to integrate. I thought it might be interesting to do both at the same time or open a follow up issue if you want to wait for Edge support, though.

If this goes in easily, then we can circle back on avif and do it next. But let's do them a distinct things as we'll have less organizational churn deciding on both at the same time. Make it easy.

This just appears to be changing the default behavior when installed.

There are a number of config files that maybe should be updated as well.

Not sure if any update hook is needed, would assume it could be disruptive to existing sites.

Maybe could be covered by change record.

This just appears to be changing the default behavior when installed.

Yup, that's what is going on here. Its a long over due change. The default install should support webp so folks use the more performance file formats.

No update hook should be added or wanted. But a change record is needed to highlight this new default. Tagging appropriately.

In that case think the config should be updated and maybe can go back to review.

#23 AVIF support is not so straightforward, at least with GD: ✨ Let GDToolkit support AVIF image format Needs work . Imagemagick is a better chance.

It looks like duplicate of #3275557-9: Add webp image conversion to core's install profile's image style →

Most of changes already commited to 10.2 but there's some leftovers #3275557-14: Add webp image conversion to core's install profile's image style →

I searched for "jpeg", excluding tests and "webp", and found a few other
places we might want to consider adding webp while we are here:

core/assets/scaffold/files/gitattributes:*.jpeg    -text diff
core/assets/scaffold/files/robots.txt:Allow: /core/*.jpeg
core/assets/scaffold/files/robots.txt:Allow: /profiles/*.jpeg
core/lib/Drupal/Core/File/file.api.php:  $cdn_extensions = ['css', 'js', 'gif', 'jpg', 'jpeg', 'png'];
core/modules/ckeditor5/ckeditor5.ckeditor5.yml:          types: ["jpeg", "png", "gif"]
core/modules/ckeditor5/src/Controller/CKEditor5ImageController.php: 'file_validate_extensions' => ['gif png jpg jpeg'],
core/modules/editor/src/Form/EditorImageDialog.php: 'file_validate_extensions' => ['gif png jpg jpeg'],
core/modules/file/src/Upload/FileUploadHandler.php:  const DEFAULT_EXTENSIONS = 'jpg jpeg gif png txt doc xls pdf ppt pps odt ods odp';
core/modules/image/src/Plugin/Field/FieldType/ImageItem.php:    $extensions = array_intersect(explode(' ', $settings['file_extensions']), ['png', 'gif', 'jpg', 'jpeg']);
core/modules/media/media.install:  $files = $file_system->scanDirectory($source, '/.*\.(svg|png|jpg|jpeg|gif)$/');

Moreover Umami can convert the most of the default content images to WebP for smaller size, but better to create separate issue

I have changed the allowed file extension and added webp. But when i upload a webp, no preview is shown on image upload form, or the display. on inspecting and removing query params or cache token added to image url, preview worked fine. Is there a solution in place for that ?

`DEFAULT_EXTENSIONS` in `core/modules/file/src/Upload/FileUploadHandler.php` definitely needs extending as well. This is the list of allowed extensioned used when no custom extension validator is used in Form API.