Title: PageSpeed Specify a cache validator
Last modified: August 30, 2016

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# PageSpeed Specify a cache validator

 *  Resolved [DCuserName](https://wordpress.org/support/users/dcusername/)
 * (@dcusername)
 * [10 years, 9 months ago](https://wordpress.org/support/topic/pagespeed-specify-a-cache-validator/)
 * Hello,
 * Just curious about this, using GTmetrix I consistently get “Specify a cache validator”
   F grade in the PageSpeed tab (it seems to all be png, jpg, and gif files), is
   this something that you’re aware of? W3TotalCache doesn’t fare any better though,
   so maybe it’s a problem with the PageSpeed assessment? If so I’d love to be able
   to let my clients know why it isn’t something to worry about.
 * Scanning through the .htaccess file I did see this section in the Fastest Cache
   code:
 * <ifModule mod_headers.c>
    Header unset ETag Header set Cache-Control “max-age
   =0, no-cache, no-store, must-revalidate” Header set Pragma “no-cache” Header 
   set Expires “Mon, 29 Oct 1923 20:30:00 GMT” </ifModule>
 * Is the “1923” part right? Should this be showing a future expiration instead?
 * This isn’t high priority but I just want to understand, and let you know if it
   is a bug or something that can be improved.
 * Thanks!
    David
 * [https://wordpress.org/plugins/wp-fastest-cache/](https://wordpress.org/plugins/wp-fastest-cache/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * (@emrevona)
 * [10 years, 9 months ago](https://wordpress.org/support/topic/pagespeed-specify-a-cache-validator/#post-6480541)
 * no no, no need to worry 🙂 1923 is the correct value. If you have problem with
   leverage browser caching, it is caused by mod_headers.c so you need to contact
   to your hosting provider.

Viewing 1 replies (of 1 total)

The topic ‘PageSpeed Specify a cache validator’ is closed to new replies.

 * ![](https://ps.w.org/wp-fastest-cache/assets/icon-256x256.png?rev=2064586)
 * [WP Fastest Cache - WordPress Cache Plugin](https://wordpress.org/plugins/wp-fastest-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-fastest-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-fastest-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-fastest-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-fastest-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-fastest-cache/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Emre Vona](https://wordpress.org/support/users/emrevona/)
 * Last activity: [10 years, 9 months ago](https://wordpress.org/support/topic/pagespeed-specify-a-cache-validator/#post-6480541)
 * Status: resolved