WebP is a modern image format employing both lossy and lossless compression. WebP helps webmasters and web developers to create smaller, richer images that make the web faster.

It makes the website SEO friendly. As a professional eCommerce web developer. I always use WebP formate image in my client’s web design project and always recommended to my follow or beginners use this format.

But there is an issue when you will try to upload in your website that builds with WordPress

If you’ve tried to upload a Webp file to your media library and received the “Sorry, this file type is not permitted for security reasons” error, you may feel stumped as to how to proceed. Below I will explain how to solve the problem.

//** *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);

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Website Setup
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