Title: Firefox doesn’t get served WebP version HTML
Last modified: June 28, 2019

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# Firefox doesn’t get served WebP version HTML

 *  Resolved [luminsol](https://wordpress.org/support/users/luminsol/)
 * (@luminsol)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/firefox-doesnt-get-served-webp-version-html/)
 * Hi guys,
 * This is more of a Firefox issue, but was wondering if anyone knows if this is
   by design or an omission?
 * In Firefox (67.x), the request header for a page doesn’t include image/webp. 
   As a result Cache Enabler won’t serve the WebP version of the HTML.
    `Accept:
   text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8`
 * However Chrome does and webp images are served.
    `accept: text/html,application/
   xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-
   exchange;v=b3`
 * I suppose a workaround would be to add some rewrite codes in htaccess if Firefox
   won’t be changing their request.

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [KeyCDN](https://wordpress.org/support/users/keycdn/)
 * (@keycdn)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/firefox-doesnt-get-served-webp-version-html/#post-11695583)
 * I think FF changed this in version 66, which makes it hard to know if it allows
   WebP in general.
 * Do you have an example for such rewrite rules?
 *  Thread Starter [luminsol](https://wordpress.org/support/users/luminsol/)
 * (@luminsol)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/firefox-doesnt-get-served-webp-version-html/#post-11695608)
 * Thanks for the reply.
 * vincentorbak has an example: [https://github.com/vincentorback/WebP-images-with-htaccess](https://github.com/vincentorback/WebP-images-with-htaccess)
 * I’ll keep an eye out on the next release of Firefox and see what they decide.
   Otherwise, I’ll just update my htaccess and maybe disable the generate webp page
   option in Cache Enabler.
 *  Plugin Author [KeyCDN](https://wordpress.org/support/users/keycdn/)
 * (@keycdn)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/firefox-doesnt-get-served-webp-version-html/#post-11695747)
 * That’s a valid integration option as well.
 * You can find here the config for apache and nginx in case someone is looking 
   for it: [https://www.keycdn.com/support/optimus/configuration-to-deliver-webp](https://www.keycdn.com/support/optimus/configuration-to-deliver-webp)
 *  [lofesa](https://wordpress.org/support/users/lofesa/)
 * (@lofesa)
 * [6 years, 7 months ago](https://wordpress.org/support/topic/firefox-doesnt-get-served-webp-version-html/#post-12117796)
 * Sorry for spaming this.
    The issue is in the Firefox side. It will be solved 
   in a future release FF72, I think. [FF nightly](https://hg.mozilla.org/integration/autoland/rev/0614c786ca70ef998274b1bcebbcd612a5d5d00a)
    -  This reply was modified 6 years, 7 months ago by [lofesa](https://wordpress.org/support/users/lofesa/).

Viewing 4 replies - 1 through 4 (of 4 total)

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 * 4 replies
 * 3 participants
 * Last reply from: [lofesa](https://wordpress.org/support/users/lofesa/)
 * Last activity: [6 years, 7 months ago](https://wordpress.org/support/topic/firefox-doesnt-get-served-webp-version-html/#post-12117796)
 * Status: resolved