Title: WebP fallback Last modified: November 5, 2017 --- # WebP fallback * Resolved [Yoav Rheims](https://wordpress.org/support/users/yoav1987/) * (@yoav1987) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/) * Hello, * Love the addition of webP to LiteSpeed Cache but you should be aware that not all browsers support it yet: [https://caniuse.com/webp/embed/](https://caniuse.com/webp/embed/) * So, I think a fallback to those browsers would be best practice. Not everybody know that and most likely won’t understand why there images are missing. Viewing 15 replies - 1 through 15 (of 15 total) * Plugin Support [LiteSpeed Lisa](https://wordpress.org/support/users/lclarke/) * (@lclarke) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9653148) * Hi, Yoav. * Yes, we are aware of this limitation, and a callback to jpg (or png) is exactly what is done in those cases. * Are you observing something different? * Thread Starter [Yoav Rheims](https://wordpress.org/support/users/yoav1987/) * (@yoav1987) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9653230) * Hey Lisa, * In a matter of fact, the fallback doesn’t seem to work when browsing on MS Edge: [http://zupimages.net/up/17/44/gtwb.png](http://zupimages.net/up/17/44/gtwb.png) * But, otherwise, works without any hiccups. - This reply was modified 8 years, 6 months ago by [Yoav Rheims](https://wordpress.org/support/users/yoav1987/). * Plugin Support [LiteSpeed Lisa](https://wordpress.org/support/users/lclarke/) * (@lclarke) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9655360) * Hmm. Ok, thank you for reporting it! We’ll have a look. * Plugin Support [LiteSpeed Lisa](https://wordpress.org/support/users/lclarke/) * (@lclarke) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9655751) * I’m trying to recreate the issue, but it works for my test site on Edge and Firefox. Can you share a URL where it is not working? * Thanks! * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9655757) * When the browser which doesn’t support WebP visits your site, a non-webp cache copy should be served as it will have different vary copy. * In your .htaccess there should be one rule which adds the vary ‘+webp’. Can you check if its there, and share the debug log when you visit via MS Edge? Or give more detail so we can have a look. * Thread Starter [Yoav Rheims](https://wordpress.org/support/users/yoav1987/) * (@yoav1987) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656143) * Here is the URL: [https://goo.gl/wgD9c7](https://goo.gl/wgD9c7) * I do see the specific line in the .htaccess indeed. * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656179) * That page is strange. Can you create a tix or paste the debug log when you access via firefox/safari? Thanks. * Plugin Support [LiteSpeed Lisa](https://wordpress.org/support/users/lclarke/) * (@lclarke) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656190) * It works for me on MS Edge! * Thread Starter [Yoav Rheims](https://wordpress.org/support/users/yoav1987/) * (@yoav1987) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656307) * _That page is strange._ * It’s Swedish ,) * It works for me on MS Edge! * That’s weird! Glad it works for you; maybe my computer is messing around… * I have no idea how to get what you requested :/ * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656465) * I mean the page doesn’t have expected footer comment. Can you paste the log as I mentioned? Or a ticket. * Thread Starter [Yoav Rheims](https://wordpress.org/support/users/yoav1987/) * (@yoav1987) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656530) * logs removed. - This reply was modified 8 years, 6 months ago by [Yoav Rheims](https://wordpress.org/support/users/yoav1987/). - This reply was modified 8 years, 6 months ago by [Yoav Rheims](https://wordpress.org/support/users/yoav1987/). Reason: logs removed * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656569) * From your debug log, nothing is wrong. Please create a ticket. * Thread Starter [Yoav Rheims](https://wordpress.org/support/users/yoav1987/) * (@yoav1987) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656596) * Got it, I’ll. * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9656706) * Well, looks like I can reproduce the issue now. Found the bug. It only happens for img src, while not for srcset. * Will fix in this week’s release. Thanks a lot for the feedback. * Thread Starter [Yoav Rheims](https://wordpress.org/support/users/yoav1987/) * (@yoav1987) * [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9657684) * Awesome! Thanks. Viewing 15 replies - 1 through 15 (of 15 total) The topic ‘WebP fallback’ is closed to new replies. * ![](https://ps.w.org/litespeed-cache/assets/icon-256x256.png?rev=2554181) * [LiteSpeed Cache](https://wordpress.org/plugins/litespeed-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/litespeed-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/litespeed-cache/) * [Active Topics](https://wordpress.org/support/plugin/litespeed-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/litespeed-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/litespeed-cache/reviews/) * 15 replies * 3 participants * Last reply from: [Yoav Rheims](https://wordpress.org/support/users/yoav1987/) * Last activity: [8 years, 6 months ago](https://wordpress.org/support/topic/webp-fallback/#post-9657684) * Status: resolved