Title: [Plugin: W3 Total Cache] GZIP working now? Last modified: August 20, 2016 --- # [Plugin: W3 Total Cache] GZIP working now? * [johnflufin](https://wordpress.org/support/users/johnflufin/) * (@johnflufin) * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/) * I have previously had problems with CSS and JS GZIP compression working properly. I was plagued by the missing “gzip” extension problem which resulted in the site being unstyled in certain browsers. For example it would output “style.css.” ( note the extra “.” on the end) instead of “style.css.gzip”. * I just did some testing after upgrading to WP 3.3.1, deactivated and uninstalled W3TC, reinstalled W3TC 0.9.2.4. Now GZIP appears to be working according to webpagetest. org and another similar site. Although there is not a “gzip” extension on the css files. For example it now outputs “style.css” (no extra period) instead of“ style.css.gzip”. * Can anyone please confirm if this new behavior is correct? * [http://wordpress.org/extend/plugins/w3-total-cache/](http://wordpress.org/extend/plugins/w3-total-cache/) Viewing 8 replies - 1 through 8 (of 8 total) * Thread Starter [johnflufin](https://wordpress.org/support/users/johnflufin/) * (@johnflufin) * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2610795) * Just tested with YSlow and it reports that the CSS and JS files are not GZIP compressed. The W3TC GZIP settings appear to be enabled. What am I doing wrong? * [Pothi Kalimuthu](https://wordpress.org/support/users/pothi/) * (@pothi) * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2611110) * > Just tested with YSlow and it reports that the CSS and JS files are not GZIP > compressed. The W3TC GZIP settings appear to be enabled. What am I doing wrong? * Please post your site URL or the test results from webpagetest.org. You may also check your site with gtmetrix and post the test result to confirm if the compression is working at the moment. * Thread Starter [johnflufin](https://wordpress.org/support/users/johnflufin/) * (@johnflufin) * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2611111) * Pothi – Thanks for the GTMetrix tip * GTMetrix scored 100 on “Enable gzip compression”. Interestingly YSlow via GTMetrix also scored 100 on “Compress components with gzip” and 84 overall despite my previous YSlow test via Firefox + Firebug + YSlow (F on “Compress components with gzip” and 78 overall score). Weird. This makes me wonder if this is a browser issue (Firefox). * In any case, shouldn’t there be a “.gzip” extension on gzipped files? Maybe I’m misunderstanding of how GZIP works. * Thoughts? * [Pothi Kalimuthu](https://wordpress.org/support/users/pothi/) * (@pothi) * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2611112) * > In any case, shouldn’t there be a “.gzip” extension on gzipped files? Maybe > I’m misunderstanding of how GZIP works. * No, no. There shouldn’t be any “.gzip” extension on gzipped files. The compression happens on the fly. * For your previous questions… * > I just did some testing after upgrading to WP 3.3.1, deactivated and uninstalled > W3TC, reinstalled W3TC 0.9.2.4. Now GZIP appears to be working according to > webpagetest.org and another similar site. Although there is not a “gzip” extension > on the css files. For example it now outputs “style.css” (no extra period) > instead of “style.css.gzip”. > Can anyone please confirm if this new behavior is correct? * I can confirm this is _the_ correct behavior. * Finally, I trust WebPageTest.org and GTMetrix than any other tool. If you still wonder if compression really happens, check out this site… [http://web-sniffer.net/](http://web-sniffer.net/) It may look little complicated, but a nice tool to do a quick check. * Thread Starter [johnflufin](https://wordpress.org/support/users/johnflufin/) * (@johnflufin) * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2611113) * Awesome, thanks Pothi. * Also, I just remembered where I was checking for the “.gzip” extension… the W3TC“ min” cache directory. Looks like the CSS min cache is named correctly (default. include.819aac.css.gzip) but the page cache file names look odd. They’re named“ _index.html_gzip”. * Is this right? If so why is it “_gzip” instead of “.gzip”? * [Pothi Kalimuthu](https://wordpress.org/support/users/pothi/) * (@pothi) * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2611114) * > Is this right? * Honestly, I have no idea about how W3 Total Cache does the compression and caching. * Thread Starter [johnflufin](https://wordpress.org/support/users/johnflufin/) * (@johnflufin) * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2611115) * I’m paranoid because of past problems but I guess I’ll just trust that it’s working correctly now. * Thanks for your help. * Plugin Contributor [Frederick Townes](https://wordpress.org/support/users/fredericktownes/) * (@fredericktownes) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2611150) * Gzip is working because your browser cache settings have enabled mod_deflate support for them. Normally only minified files will have a compressed and non- compressed version created in the w3tc cache directory. Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘[Plugin: W3 Total Cache] GZIP working now?’ is closed to new replies. * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806) * [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/w3-total-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/w3-total-cache/) * [Active Topics](https://wordpress.org/support/plugin/w3-total-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/w3-total-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/w3-total-cache/reviews/) * 8 replies * 3 participants * Last reply from: [Frederick Townes](https://wordpress.org/support/users/fredericktownes/) * Last activity: [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-w3-total-cache-gzip-working-now/#post-2611150) * Status: not resolved