webp

Hi,

Yes your PHP snippet is pretty close, but it seems to be missing the filter where its suppose to apply to.

Its also missing a } to close the function which is pretty important as it can cause syntax errors.

Here's a more complete version of your code:

//** *Enable upload for webp image files.*/
function webp_upload_mimes($existing_mimes) {
    $existing_mimes['webp'] = 'image/webp';
    return $existing_mimes;
}
add_filter('mime_types', 'webp_upload_mimes');

//** * Enable preview / thumbnail for webp image files.*/
function webp_is_displayable($result, $path) {
    if ($result === false) {
        $displayable_image_types = array( IMAGETYPE_WEBP );
        $info = @getimagesize( $path );

        if (empty($info)) {
            $result = false;
        } elseif (!in_array($info[2], $displayable_image_types)) {
            $result = false;
        } else {
            $result = true;
        }
    }

    return $result;
}
add_filter('file_is_displayable_image', 'webp_is_displayable', 10, 2);

Please refer to this on how to add PHP snippets to your site - https://docs.generatepress.com/article/adding-php/

Thanks- I will just paste it to my “Code Snippets” app

Howard

No problem. :)

Hi
Another question
( more complicated)
How to fix:

Ensure text remains visible during webfont load
Leverage the font-display CSS feature to ensure text is user-visible while webfonts are loading.

I know there are code(s) ..
But where and how to apply them ( novice)
Howard

Hi,

Let's try to keep it 1 issue per topic.

That said, can you open up a new one for your other questions? Thank you. :)

Hi: This code does not seem to work when put into CODE SNIPPETS

//** *Enable upload for webp image files.*/
function webp_upload_mimes($existing_mimes) {
$existing_mimes['webp'] = 'image/webp';
return $existing_mimes;
}
add_filter('mime_types', 'webp_upload_mimes');

//** * Enable preview / thumbnail for webp image files.*/
function webp_is_displayable($result, $path) {
if ($result === false) {
$displayable_image_types = array( IMAGETYPE_WEBP );
$info = @getimagesize( $path );

if (empty($info)) {
$result = false;
} elseif (!in_array($info[2], $displayable_image_types)) {
$result = false;
} else {
$result = true;
}
}

return $result;
}
add_filter('file_is_displayable_image

Hi,

This part seems to be missing some codes.

...
add_filter(‘file_is_displayable_image

You have to add the function name(webp_is_displayable), priority (10) and # of accepted args(2).

add_filter('file_is_displayable_image', 'webp_is_displayable', 10, 2);

Also, be mindful with smart apostrophe/curly quotes ‘. It doesn't work if you use that, straight quote should be used '.

Reference:
https://mariushosting.com/how-to-upload-webp-files-on-wordpress/#:~:text=Log%20in%20to%20your%20WordPress,upload%20for%20webp%20image%20files.