Title: Gzip, Expire Headers, Inline CSS/JS Last modified: May 6, 2019 --- # Gzip, Expire Headers, Inline CSS/JS * Resolved [heutger](https://wordpress.org/support/users/heutger/) * (@heutger) * [7 years ago](https://wordpress.org/support/topic/gzip-expire-headers-inline-css-js/) * Hi, * I’m unsure on how to get Gzip running. Your FAQ is a bit short to just enable an option as I don’t know how to. After googling a bit around, I found, it should be done with functions.php or additional plugin Code Snippets and adding there add_filter(‘autoptimize_filter_cache_create_static_gzip’,’__return_true’); and after doing that I recognized (maybe also had been done before) .gz files have been created, but I did not saw them been used? Scripts and Styles are still loading the non-gz files? Any additional changes needed (used Super Cache to test it). * Also I got errors by changing W3TC to Super Cache and Autoptimize and worser scores as Expire Headers aren’t set for images as well as for the Autoptimize CSS and JS. Doesn’t Autoptimize offer such an option? * I tried around because I want to remove Emoji-Code as well as Google Fonts (or integrate them by caching them local) but primary because of CSP issues with inline JS and inline CSS and hoped activating aggregate would move them all out to external files, but either after activating I need to purge any additional caches or inline JS and inline CSS isn’t moved to external files? Also I tried to integrate jscript.js, you state that popular plugins use jscript.js, but which ones are using jscript.js? There was no list of such ones. * Regards, Christian Viewing 5 replies - 1 through 5 (of 5 total) * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [7 years ago](https://wordpress.org/support/topic/gzip-expire-headers-inline-css-js/#post-11500205) * OK, so `add_filter(‘autoptimize_filter_cache_create_static_gzip’,’__return_true’);` is there to create static gzip files, how those are to be served by the webserver is up to the webserver config and is different between webserver version (Apache, IIS, nginx, …). * Normally you just want the webserver to do the gzipping “on the fly”. for this purpose AO adds a .htaccess file which gently asks Apache (but not other webservers) to do the gzipping and set expiry for the autoptimized files, but Apache (depending on config and higher up .htaccess files) can still choose not to honor AO’s . htaccess. In most cases deactivating the “serve as static files”-option fixes this (but there’s a known issue with WP Super Cache’s .htaccess which sets expiry to 3, if you have that you might want to change that). * AO by default moves inline CSS to the autoptimized CSS-file, but does _not_ do so for inline JS as that risks causing a big number of files in the Autoptimize cache (and [more important but less visible issues](https://blog.futtta.be/2016/09/15/autoptimize-cache-size-the-canary-in-the-coal-mine/)). Even if “also aggregate inline JS” is on, some of it will be excluded anyhow ( e.g. JS containing nonce’s or document.write or google ads JS or …). * Lastly; not sure what you are referring to with `jscript.js` I’m afraid, can you clarify? * frank * Thread Starter [heutger](https://wordpress.org/support/users/heutger/) * (@heutger) * [7 years ago](https://wordpress.org/support/topic/gzip-expire-headers-inline-css-js/#post-11500497) * Hi, * ok, then I need to try with non-static option as I have Apache and over code is served as gzip. Do you recommend any additional cache plugin as W3TC seems to have issues as well as Super Cache? * Also by optimizing my inline code to outsourced code I tried your aggregate function, by default with CSS but also then by activating JS GTMetrix still stated to me, that there is inline CSS and inline JS left? So for JS you stated, it can be, but for CSS I thought it will work? * jscript.js is per default excluded on your side, so I tried to remove exclusion and worked well. However, in your FAQ here on the plugin page (first page of your plugin description) you write in your FAQ why to exclude jscript.js as “ popular plugins” will get use of and will then get in trouble, but you don’t state anywhere, which plugins there are. * Regards, Christian * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [7 years ago](https://wordpress.org/support/topic/gzip-expire-headers-inline-css-js/#post-11500583) * I use WP Super Cache myself, have encountered no issues except for the short expiry mishap in their .htaccess. Alternative could be KeyCDN Cache enabler maybe? * > So for JS you stated, it can be, but for CSS I thought it will work? * No idea, but if you can share your URL I can have a quick look. * > jscript.js is per default excluded on your side, so I tried to remove exclusion > and worked well. However, in your FAQ here on the plugin page (first page of > your plugin description) you write in your FAQ why to exclude jscript.js as“ > popular plugins” will get use of and will then get in trouble, but you don’t > state anywhere, which plugins there are. * ah, jquery.js. well, don’t have a list of those, but if you removed jquery.js from the exclusion list, tested and all works well, then you can safely leave it be 🙂 * Thread Starter [heutger](https://wordpress.org/support/users/heutger/) * (@heutger) * [7 years ago](https://wordpress.org/support/topic/gzip-expire-headers-inline-css-js/#post-11500625) * Is this expiry mishap what I also mentioned for the images? So is it a bug, which should be filed for their plugin? * [http://www.heutger.net](http://www.heutger.net) is the URL, however, I switched back to W3TC currently. * Ok, looked like you had played around a bit with some plugins and have an experience list, for sure, you won’t be able to provide a full list of all plugins which may arise problems. 😉 * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [7 years ago](https://wordpress.org/support/topic/gzip-expire-headers-inline-css-js/#post-11500671) * > Is this expiry mishap what I also mentioned for the images? * don’t think so, but not 100% sure * > Ok, looked like you had played around a bit with some plugins and have an experience > list, * don’t have lists, plugins can change overnight so a list would require updating which would require testing which would require time which … I don’t have 😉 Viewing 5 replies - 1 through 5 (of 5 total) The topic ‘Gzip, Expire Headers, Inline CSS/JS’ is closed to new replies. * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608) * [Autoptimize](https://wordpress.org/plugins/autoptimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/autoptimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/autoptimize/) * [Active Topics](https://wordpress.org/support/plugin/autoptimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/autoptimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/autoptimize/reviews/) * 5 replies * 2 participants * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * Last activity: [7 years ago](https://wordpress.org/support/topic/gzip-expire-headers-inline-css-js/#post-11500671) * Status: resolved