https://marvel-it.icu/w3-total-cache-custom-file-list-wilcard-cdn-rule-with-divergent-wordpress-thumbnails-images
Not every WordPress thing are lifted to CDN by W3 Total Cache, cause a little bit errors appears on your blog?
In this demonstration, it is about images (custom thumbnails using by Random Posts widget) which not associated as an attachment of a post, so it isn't available on the CDN, CloudFront in this case.
[01:17] We can change the Custom File List to include them (240x50 thumbnails) like this.
[01:23] It is only a little wildcard string.
[01:26] This is the default Custom File lists rules.
[02:09] You can learn more about the rule define in the homepage of W3 Total Cache homepage.
[02:45] That's all :)
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