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=== LiteSpeed Cache === Contributors: LiteSpeedTech Tags: caching, optimize, performance, pagespeed, seo, image optimize, object cache, redis, memcached, database cleaner Requires at least: 5.3 Requires PHP: 7.2 Tested up to: 6.8 Stable tag: 7.6.2 License: GPLv3 License URI: http://www.gnu.org/licenses/gpl.html All-in-one unbeatable acceleration & PageSpeed improvement: caching, image/CSS/JS optimization... == Description == LiteSpeed Cache for WordPress (LSCWP) is an all-in-one site acceleration plugin, featuring an exclusive server-level cache and a collection of optimization features. LSCWP supports WordPress Multisite and is compatible with most popular plugins, including WooCommerce, bbPress, and Yoast SEO. LiteSpeed Cache for WordPress is compatible with ClassicPress. == Requirements == General Features may be used by anyone with any web server (LiteSpeed, Apache, NGINX, etc.). LiteSpeed Exclusive Features require one of the following: OpenLiteSpeed, commercial LiteSpeed products, LiteSpeed-powered hosting, or QUIC.cloud CDN. [Why?](https://docs.litespeedtech.com/lscache/lscwp/faq/#why-do-the-cache-features-require-a-litespeed-server) == Plugin Features == = General Features = * Free QUIC.cloud CDN Cache * Object Cache (Memcached/LSMCD/Redis) Support<sup>+</sup> * Image Optimization (Lossless/Lossy) * Minify CSS, JavaScript, and HTML * Minify inline & external CSS/JS * Combine CSS/JS * Automatically generate Critical CSS * Lazy-load images/iframes * Responsive Image Placeholders * Multiple CDN Support<sup>+</sup> * Load CSS Asynchronously * Defer/delay JS loading * Browser Cache Support<sup>+</sup> * Database Cleaner and Optimizer * PageSpeed score (including Core Web Vitals) optimization * OPcode Cache Support<sup>+</sup> * HTTP/2 Push for CSS/JS (on web servers that support it) * DNS Prefetch * Cloudflare API * Single Site and Multisite (Network) support * Import/Export settings * Attractive, easy-to-understand interface * AVIF/WebP image format support * Heartbeat control <sup>+</sup> This service is not provided by the LSCache plugin, nor is it guaranteed to be installed by your service provider. However, the plugin is compatible with the service if it is in use on your site. = LiteSpeed Exclusive Features = * Automatic page caching to greatly improve site performance * Automatic purge of related pages based on certain events * Private cache for logged-in users * Caching of WordPress REST API calls * Separate caching of desktop and mobile views * Ability to schedule purge for specified URLs * WooCommerce and bbPress support * [WordPress CLI](https://docs.litespeedtech.com/lscache/lscwp/cli/) commands * API system for easy cache integration * Exclude from cache by URI, Category, Tag, Cookie, User Agent * Smart preload crawler with support for SEO-friendly sitemap * Multiple crawlers for cache varies * HTTP/2 support * [HTTP/3 & QUIC](https://www.litespeedtech.com/http3-faq) support * ESI (Edge Side Includes) support<sup></sup> Widgets and Shortcodes as ESI blocks<sup></sup> (requires Classic Widgets plugin for WP 5.8+) <sup></sup> Feature not available in OpenLiteSpeed == Screenshots == 1. Plugin Benchmarks 2. Admin - Dashboard 3. Admin - Image Optimization 4. Admin - Crawler 5. Admin Settings - Cache 6. Admin Settings - Page Optimization 7. Admin Settings - CDN 8. Admin Settings - DB Optimizer 9. Admin Settings - Toolbox 10. Cache Miss Example 11. Cache Hit Example == LSCWP Resources == * [Join our Slack community](https://litespeedtech.com/slack) to connect with other LiteSpeed users. * [Ask a question on our support forum](https://wordpress.org/support/plugin/litespeed-cache/). * [View detailed documentation](https://docs.litespeedtech.com/lscache/lscwp/). * [Read about LSCWP and WordPress on our blog](https://blog.litespeedtech.com/tag/wordpress/). * [Help translate LSCWP](https://translate.wordpress.org/projects/wp-plugins/litespeed-cache/). * [Contribute to the LSCWP GitHub repo](https://github.com/litespeedtech/lscache_wp). == Installation == [View detailed documentation](https://docs.litespeedtech.com/lscache/lscwp/installation/). = For Optimization Without a LiteSpeed Web Server = 1. Install the LiteSpeed Cache for WordPress plugin and activate it. 1. From the WordPress Dashboard, navigate to LiteSpeed Cache > Page Optimization. Enable the available optimization features in the various tabs. = For Caching and Optimization With a LiteSpeed Web Server = 1. Install [LiteSpeed Web Server Enterprise](https://www.litespeedtech.com/products/litespeed-web-server) with LSCache Module, [LiteSpeed Web ADC](https://www.litespeedtech.com/products/litespeed-web-adc), or [OpenLiteSpeed](https://www.litespeedtech.com/open-source/openlitespeed) with cache module (Free). Or sign up for [QUIC.cloud CDN](https://quic.cloud). 1. Install the LiteSpeed Cache for WordPress plugin and activate it. 1. From the WordPress Dashboard, navigate to LiteSpeed Cache > Cache, make sure the option Enable LiteSpeed Cache is set to `ON`. 1. Enable any desired caching and optimization features in the various tabs. = Notes for LiteSpeed Web Server Enterprise = * Make sure that your license includes the LSCache module. A [2-CPU trial license with LSCache module](https://www.litespeedtech.com/products/litespeed-web-server/download/get-a-trial-license "trial license") is available for free for 15 days. * The server must be configured to have caching enabled. If you are the server admin, [click here](https://docs.litespeedtech.com/lscache/start/#configure-cache-root-and-cache-policy) for instructions. Otherwise, please request that the server admin configure the cache root for the server. = Notes for OpenLiteSpeed = * This integration utilizes OpenLiteSpeed's cache module. * If it is a fresh OLS installation, the easiest way to integrate is to use [ols1clk](https://openlitespeed.org/kb/1-click-install/). If using an existing WordPress installation, use the `--wordpresspath` parameter. * If OLS and WordPress are both already installed, please follow the instructions in [How To Set Up LSCache For WordPress](https://openlitespeed.org/kb/how-to-setup-lscache-for-wordpress/). == Third Party Compatibility == The vast majority of plugins and themes are compatible with LSCache. [Our API](https://docs.litespeedtech.com/lscache/lscwp/api/) is available for those that are not. Use the API to customize smart purging, customize cache rules, create cache varies, and make WP nonce cacheable, among other things. == Privacy == This plugin includes some suggested text that you can add to your site's Privacy Policy via the Guide in the WordPress Privacy settings. For your own information: LiteSpeed Cache for WordPress potentially stores a duplicate copy of every web page on display on your site. The pages are stored locally on the system where LiteSpeed server software is installed and are not transferred to or accessed by LiteSpeed employees in any way, except as necessary in providing routine technical support if you request it. All cache files are temporary, and may easily be purged before their natural expiration, if necessary, via a Purge All command. It is up to individual site administrators to come up with their own cache expiration rules. In addition to caching, our WordPress plugin has online features provided by QUIC.cloud for Image Optimization and Page Optimization services. When one of these optimizations is requested, data is transmitted to a remote QUIC.cloud server, processed, and then transmitted back for use on your site. QUIC.cloud keeps copies of that data for up to 7 days and then permanently deletes it. Similarly, the WordPress plugin has a Reporting feature whereby a site owner can transmit an environment report to LiteSpeed so that we may better provide technical support. None of these features collects any visitor data. Only server and site data are involved. QUIC.cloud CDN, if enabled, uses LSCache technology to access your site, and serve your content from remote global nodes. Your data is not accessed by QUIC.cloud employees in any way, except as necessary in providing maintenance or technical support. Please see the [QUIC.cloud Privacy Policy](https://quic.cloud/privacy-policy/) for our complete Privacy/GDPR statement. == Frequently Asked Questions == = Why do the cache features require LiteSpeed Server? = This plugin communicates with your LiteSpeed Web Server and its built-in page cache (LSCache) to deliver superior performance to your WordPress site. The plugin’s cache features indicate to the server that a page is cacheable and for how long, or they invalidate particular cached pages using tags. LSCache is a server-level cache, so it's faster than PHP-level caches. [Compare with other PHP-based caches](https://www.litespeedtech.com/benchmarks/wordpress). A page cache allows the server to bypass PHP and database queries altogether. LSCache, in particular, because of its close relationship with the server, can remember things about the cache entries that other plugins cannot, and it can analyze dependencies. It can utilize tags to manage the smart purging of the cache, and it can use vary cookies to serve multiple versions of cached content based on things like mobile vs. desktop, geographic location, and currencies. [See our Caching 101 blog series](https://blog.litespeedtech.com/tag/caching-101/). If all of that sounds complicated, no need to worry. LSCWP works right out of the box with default settings that are appropriate for most sites. [See the Beginner's Guide](https://docs.litespeedtech.com/lscache/lscwp/beginner/). Don't have a LiteSpeed server? Try our QUIC.cloud CDN service. It allows sites on any server (NGINX and Apache included) to experience the power of LiteSpeed caching! [Click here](https://quic.cloud) to learn more or to give QUIC.cloud a try. = What about the optimization features of LSCache? = LSCWP includes additional optimization features, such as Database Optimization, Minification and Combination of CSS and JS files, HTTP/2 Push, CDN Support, Browser Cache, Object Cache, Lazy Load for Images, and Image Optimization! These features do not require the use of a LiteSpeed web server. = Is the LiteSpeed Cache Plugin for WordPress free? = Yes, LSCWP will always be free and open source. That said, a LiteSpeed server is required for the cache features, and there are fees associated with some LiteSpeed server editions. Some of the premium online services provided through QUIC.cloud (CDN Service, Image Optimization, Critical CSS, Low-Quality Image Placeholder, etc.) require payment at certain usage levels. You can learn more about what these services cost, and what levels of service are free, on [your QUIC.cloud dashboard](https://my.quic.cloud). = What server software is required for this plugin? = A LiteSpeed solution is required in order to use the LiteSpeed Exclusive features of this plugin. Any one of the following will work: 1. LiteSpeed Web Server Enterprise with LSCache Module (v5.0.10+) 2. OpenLiteSpeed (v1.4.17+) 3. LiteSpeed WebADC (v2.0+) 4. QUIC.cloud CDN The General Features may be used with any web server. LiteSpeed is not required. = Does this plugin work in a clustered environment? = The cache entries are stored at the LiteSpeed server level. The simplest solution is to use LiteSpeed WebADC, as the cache entries will be stored at that level. If using another load balancer, the cache entries will only be stored at the backend nodes, not at the load balancer. The purges will also not be synchronized across the nodes, so this is not recommended. If a customized solution is required, please contact LiteSpeed Technologies at `info@litespeedtech.com` NOTICE: The rewrite rules created by this plugin must be copied to the Load Balancer. = Where are the cached files stored? = The actual cached pages are stored and managed by LiteSpeed Servers. Nothing is stored within the WordPress file structure. = Does LiteSpeed Cache for WordPress work with OpenLiteSpeed? = Yes it can work well with OpenLiteSpeed, although some features may not be supported. See Plugin Features above for details. Any setting changes that require modifying the `.htaccess` file will require a server restart. = Is WooCommerce supported? = In short, yes. However, for some WooCommerce themes, the cart may not be updated correctly. Please [visit our blog](https://blog.litespeedtech.com/2017/05/31/wpw-fixing-lscachewoocommerce-conflicts/) for a quick tutorial on how to detect this problem and fix it if necessary. = Are my images optimized? = Images are not optimized automatically unless you set LiteSpeed Cache > Image Optimization > Image Optimization Settings > Auto Request Cron to `ON`. You may also optimize your images manually. [Learn more](https://docs.litespeedtech.com/lscache/lscwp/imageopt/). = How do I make a WP nonce cacheable in my third-party plugin? = Our API includes a function that uses ESI to "punch a hole" in a cached page for a nonce. This allows the nonce to be cached separately, regardless of the TTL of the page it is on. Learn more in [the API documentation](https://docs.litespeedtech.com/lscache/lscwp/api/#esi). We also welcome contributions to our predefined list of known third party plugin nonces that users can optionally include via [the plugin's ESI settings](https://docs.litespeedtech.com/lscache/lscwp/cache/#esi-nonce). = How do I enable the crawler? = The crawler is disabled by default, and must be enabled by the server admin first. Once the crawler is enabled on the server side, navigate to LiteSpeed Cache > Crawler > General Settings and set Crawler to `ON`. For more detailed information about crawler setup, please see [the Crawler documentation](https://docs.litespeedtech.com/lscache/lscwp/crawler/). = What are the known compatible plugins and themes? = * [WPML](https://wpml.org/) * [DoLogin Security](https://wordpress.org/plugins/dologin/) * [bbPress](https://wordpress.org/plugins/bbpress/) * [WooCommerce](https://wordpress.org/plugins/woocommerce/) * [Contact Form 7](https://wordpress.org/plugins/contact-form-7/) * [All in One SEO](https://wordpress.org/plugins/all-in-one-seo-pack/) * [Google XML Sitemaps](https://wordpress.org/plugins/google-sitemap-generator/) * [Yoast SEO](https://wordpress.org/plugins/wordpress-seo/) * [Wordfence Security](https://wordpress.org/plugins/wordfence/) * [NextGen Gallery](https://wordpress.org/plugins/nextgen-gallery/) * [ShortPixel](https://shortpixel.com/h/af/CXNO4OI28044/) * Aelia CurrencySwitcher * [Fast Velocity Minify](https://wordpress.org/plugins/fast-velocity-minify/) - Thanks Raul Peixoto! * Autoptimize * [Better WP Minify](https://wordpress.org/plugins/bwp-minify/) * [WP Touch](https://wordpress.org/plugins/wptouch/) * [Theme My Login](https://wordpress.org/plugins/theme-my-login/) * [WPLister](https://www.wplab.com/plugins/wp-lister/) * [WP-PostRatings](https://wordpress.org/plugins/wp-postratings/) * [Avada 5.1 RC1+](https://avada.theme-fusion.com/) * [Elegant Themes Divi 3.0.67+](https://www.elegantthemes.com/gallery/divi/) * [Elegant Divi Builder](https://www.elegantthemes.com/plugins/divi-builder/) * [Caldera Forms](https://wordpress.org/plugins/caldera-forms/) 1.5.6.2+ * Login With Ajax * [Ninja Forms](https://wordpress.org/plugins/ninja-forms/) * [Post Types Order 1.9.3.6+](https://wordpress.org/plugins/post-types-order/) * [BoomBox — Viral Magazine WordPress Theme](https://themeforest.net/item/boombox-viral-buzz-wordpress-theme/16596434?ref=PX-lab) * FacetWP (LSWS 5.3.6+) * Beaver Builder * WpDiscuz * WP-Stateless * Elementor * WS Form * WP Statistics The vast majority of plugins and themes are compatible with LiteSpeed Cache. The most up-to-date compatibility information can be found [in our documentation](https://docs.litespeedtech.com/lscache/lscwp/thirdparty/) = How can I report security bugs? = You can report security bugs through the Patchstack Vulnerability Disclosure Program. The Patchstack team help validate, triage and handle any security vulnerabilities. [Report a security vulnerability.](https://patchstack.com/database/vdp/litespeed-cache) == Changelog == = 7.6.2 - Oct 17 2025 = * 🐞Cloud Fixed the PHP 8+ typecast issue in QUIC.cloud signature verification which caused activation failures. * Purge Restored a delay purge hook while calling purge by CLI. (asafm7) * REST Dropped legacy code that had been used for development purposes. * GUI Use a stricter selector for dark mode to prevent side effects. = 7.6.1 - Oct 15 2025 = * Cloud Increased POST connection timeout to prevent potential failures. * ⚠️🐞GUI Fixed a frontend display issue caused by the dark mode CSS file loading on the website frontend. (Peter Wells PR#923) * 🐞Page Optimize Corrected a typo in the DNS prefetch filter. (Yaroslav Yachmenov PR#922) = 7.6 - Oct 15 2025 = * 🌱Admin Dark mode supported. * 🌱Purge Added `Purge All - VPI` to the Purge menu. (PR#898) * ⚠️🐞Debug Escaped comments to prevent a CSS vulnerability that could occur when debug is on. (#218778 Trustwave #CWE-79) * Purge Gravatar purge now also clears the database records. (Serafín Danessa, PR#915) * Conf Fixed an issue where the `Drop Query String` setting was not saved when in network mode. (Jory Hogeveen PR#910) * VPI Add fetchpriority and decode attributes to VPI. (Hirak Kalita, serpentdriver, PR#903) * Cloud Auto sync new Server IP to QUIC.cloud if changed. (cloud86) * GUI Auto update port value when `Object Cache Method` is changed. * API Dropped legacy `conf::val()` function. * 🐞Misc Fixed PHP 7.2 compatibility issue. (Ulrich Viridis, PR#913) * Misc Added UCSS file path to comment info for easier debug. (PR#914) = 7.5.0.1 - Sep 11 2025 = * 🐞GUI Fixed an issue where the network dashboard template was missing. (mcworks) = 7.5 - Sep 10 2025 = * 🌱Image Optimize New option `Optimize Image Sizes` to allow user to choose which image sizes to include in optimization request. * 🐞Purge Purge Time setting will respect WP timezone setting now. (PR#893) * 🐞Conf Fixed a minor type-casting bug, which could cause unnecessary QUIC.cloud sync configuration when the setting is empty. * Misc Dropped unused rewrite rule from htaccess. = 7.4 - Aug 28 2025 = * 🌱Media Added new Auto Rescale Original Image option. * 🌱Toolbox Added ability to Disable All for 24 Hours. (PR#886) * 🐞CDN Fixed a QUIC.cloud sync configuration failure on network child sites. * 🐞Object Cache Fixed a bug that failed to detect the Redis connection status. * Cache Better match iPhone browsers for mobile cache detection. * Cache Dropped use of `advanced-cache.php` support since WP v5.3+ doesn't need it, and LiteSpeed requires WP v5.3+. * Cache When page is not cacheable, set header to value used by WordPress `Cache-Control` header. (asafm7) * Page Optimize Better compatibility for dummy CSS removal in cases where other plugins manipulate the quotation marks. * Page Optimize Dropped v4.2 legacy `LITESPEED_BYPASS_OPTM`. * Crawler Now use an .html file to test the port, as some security plugins block .txt files and cause port test failure. (#661828) * GUI Show current live values for options if they are overridden by filters or the server environment. (PR#885) * Data Dropped legacy code and upgraded data migration support to LSCWP v5.7-. * Misc Support the `LITESPEED_DEV` constant to allow switching to a development environment. * Misc Allow leading underscore (`_`) for private functions and variables in format checker. * Misc Suppress frequent version check when a certain database option is cached. * Misc Dropped `sanitize_file_name` usage to prevent template failure when 3rd party plugins manipulate that filter. = 7.3.0.1 - Jul 30 2025 = * Page Optimize Fixed the page score impact caused by CSS placeholder. (wpconvert, Sean Thompson) * Page Optimize Fixed wrong prefetch/preload injection when a page contains other `<title>` tags. (idatahuy) * Crawler Bypassed port test if no server IP set. (kptk, serkanix, Guillermo) = 7.3 - Jul 24 2025 = * 🌱CLI Added `wp litespeed-database` database optimization command. * 🌱Misc Added survey and data deletion reminder in deactivation process. * Core Refactored the template files to comply with WordPress standards. * Core Refactored the CLI files to comply with WordPress standards. Fixed a bug with CLI `option` command failure handler. * ESI Fixed a case where the Edit button is missing on the frontend when the permalink structure is `Plain`. (#934261 PR#860) * API Added `litespeed_purge_tags` filter to allow manipulation of purge tags. * API Allowed overriding `litespeed_ui_events` via window property. (Zsombor Franczia PR#865) * API Added `litespeed_vpi_should_queue` filter to allow control over appending to the VPI queue. (tompalmer #855, Viktor Szépe PR#856) * Debug Allowed debug at multisite network level. (PR#861) * Vary Fixed a possible duplicate WebP vary in Chrome when mimicking an iPhone visit. * 🐞Vary Used simpler rewrite rule to check for next generation image format support. * Page Optimize Tuned the optimized data injection location in HTML to improve SEO. (videofinanzas) * Page Optimize Improved DNS prefetch and preconnect sequence in HTML to be as early as possible. Simplified DNS optimization code. * 🐞Page Optimize Added the JS Delay library that was missing when page optimization was off while iframe lazy load was on. (Zsombor Franczia #867) * 🐞Page Optimize Allowed lazy load threshold overwrite. (Zsombor Franczia #852 PR#857) * 🐞Page Optimize Fixed an issue where the `async` attribute was replaced even when it contained a value, e.g. `async=true`. (@macorak) * 🐞Cloud Fixed the API call timestamp file creation warning. * Cloud No longer include public key when logging QUIC.cloud registration process. * Image Optimize Resend all images that failed to pull instead of bypassing them. (Ryan D) * Crawler Checked QUIC.cloud CDN for crawler hit. (PR#866) * 🐞Crawler Fixed an issue where the non-role-simulator crawler added the whole map to the blocklist on servers that only support port 80. * GUI Added Enable All Features icon to admin bar when all features are disabled. This replaces the banner that previously displayed in admin. (Tobolo, PR#868) * GUI Dropped font files. (Masoud Najjar Khodabakhsh) * 3rd Resolved an issue with an empty WooCommerce ESI nonce and HTML comments on geolocation redirection. (#612331 PR#708) * OPcache Detected `opcache.restrict_api` setting to prevent PHP warning in purge. (ookris #9496550 PR#812) * Misc Simplified admin JavaScript. * Misc Fixed download import file extension issue on mobile. (autori76 #874) * Misc Added existing plugin version to ping API for debugging purposes. * Misc Fixed comment typos reported by static analysis. (Viktor Szépe PR#836) * Misc Removed global variables from plugin initialization file. (Viktor Szépe PR#837) = 7.2 - Jun 18 2025 = * 🌱CDN New option: Cloudflare Clear on purge all. (PR#828) * Core Used `site_url` instead of `home_url` to fix the content folder parsing and QUIC.cloud calls. * 🐞Cloud Fixed a bug where we tried to sync QUIC.cloud usage while debug mode was ON, even when QC was not activated. * Cloud Stored request timestamp in static files along w/ database to prevent duplicate requests when database is down. * Cache Dropped `Cache PHP Resources` option. * Cache Added verification to prevent admin pages from caching even if the site is set to be globally cacheable. * Image Optimize Disable image pull cron if there have been no image notifications. * Crawler Non-role simulator crawler will now use DNS resolve to hit original server instead of CDN nodes. * Media Resolved an issue where deleting an image from grid mode neglected to also remove the optimized versions of the image. (PR#844, Zsombor Franczia #841) * Media Allowed filter `litespeed_next_gen_format` to manipulate the value of next gen format. (Zsombor Franczia #853) * 3rd Elementor: Clear all caches on regenerate CSS & Data. (PR#806) * Config `Purge All On Upgrade` now defaults to OFF. * GUI Showed `Disable all features` message on all WP-Admin pages for Admin-level users when enabled. * Misc Used PHPCS w/ WordPress core and security coding standards to reformat cache menu code. (Viktor Szépe #696) * Misc Replaced use of `SHOW TABLES` with `DESCRIBE` to prevent database halt in very large WP Multisite installations. (Boone Gorges PR#834, PR#850) * Misc Replaced constants with WordPress functions to check whether AJAX or CRON is running. * API Added action `litespeed_save_conf` to provide a trigger for configuration updates. = 7.1 - Apr 24 2025 = * 🌱Page Optimize Added allowlist support for CCSS. * Cloud CCSS results are now generated asynchronously via QUIC.cloud queue services. * Cloud Added TTL control to QUIC.cloud services to make next requests more flexible. * Crawler Dropped non-WebP/AVIF crawler if Next Gen Images are being used. * 🐞Config Fixed an .htaccess generation bug that occurred when reactivating after previous deactivation. (PR#825) * GUI Improved the QC registration notice banner for online services thanks to user feedback. * GUI QUIC.cloud management links will be opened in a single dedicated new window to prevent multiple sessions. * Page Optimization Enhanced URL fetch validation to avoid exposing possible local info. * Debug Added a Click to copy logs button under `Log View` tab. * CLI Removed a vary warning log in CLI for QC activation process with a customized login cookie. * CLI Removed a log failure in CLI in QC activation process when no existing admin message. * Misc Check version only after upgrade to reduce the requests. * Misc Switched to CyberPanel.sh to detect public IP for dash tool. = 7.0.1 - Apr 8 2025 = * Page Optimize Migrate legacy data to append trailing slash for better compatibility with v7.0-optimized UCSS/CCSS data. = 7.0.0.1 - Mar 27 2025 = * GUI Resolved a banner message display error in certain old version cases. * GUI Fixed a continual error banner when site doesn't use QC. * Config Fixed a continual CDN sync_conf/purge check issue after upgraded to v7.0. * 3rd Improved WPML multi lang sync_conf compatibility. = 7.0 - Mar 25 2025 = * 🌱Image Optimization Added AVIF format. * Core Changed plugin classes auto load to preload all to prevent upgrade problems. * Core Refactored configuration data initialization method to realtime update instead of delayed update in plugin upgrade phase. * Core Used `const.default.json` instead of `const.default.ini` for better compatibility in case `parse_ini_file()` is disabled. * Core Minimum required PHP version escalated to PHP v7.2.0. * Core Minimum required WP version escalated to WP v5.3. * Cloud Dropped `Domain Key`. Now using sodium encryption for authentication and validation. * Cloud Added support for `list_preferred` in online service node detection. * Cloud Fixed a domain expiry removal PHP warning. (cheekymate06) * Cloud Auto dropped Cloud error message banner when successfully reconnected. * Cloud Simplified the configure sync parameters to only compare and post the necessary settings. * Config Simplified QUIC.cloud CDN Setup. CDN service is now automatically detected when activated in the QUIC.cloud Dashboard. * Config Dropped the initial version check when comparing md5 to decide if whether to sync the configuration when upgrading the plugin. * Config `LITESPEED_DISABLE_ALL` will now check the value to determine whether it's been applied. * Database Optimize Fixed Autoload summary for WP6.6+. (Mukesh Panchal/Viktor Szépe) * CLI Added QUIC.cloud CDN CLI command: `wp litespeed-online cdn_init --ssl-cert=xxx.pem --ssl-key=xxx -method=cname\|ns\|cfi`. * CLI Added QUIC.cloud CDN CLI command: `wp litespeed-online link --email=xxx@example.com --api-key=xxxx`. * CLI Added QUIC.cloud CDN CLI command: `wp litespeed-online cdn_status`. * CLI Added `--force` argument for QUIC.cloud CLI command `wp litespeed-online ping`. * Image Optimization Dropped `Auto Pull Cron` setting. Added PHP const `LITESPEED_IMG_OPTM_PULL_CRON` support. * Image Optimization Added Soft Reset Counter button to allow restarting image optimization without destroying previously optimized images. * Image Optimization Added support for `LITESPEED_IMG_OPTM_PULL_THREADS` to adjust the threads to avoid PHP max connection limits. * Image Optimization Added support for the latest firefox WebP Accept header change for serving WebP. * Image Optimization Allowed PHP Constant `LITESPEED_FORCE_WP_REMOTE_GET` to force using `wp_remote_get()` to pull images. * Image Optimization Dropped API filter `litespeed_img_optm_options_per_image`. * Image Optimization Auto redirect nodes if the server environment is switched between Preview and Production. * Purge Allowed `LSWCP_EMPTYCACHE` to be defined as false to disable the ability to Purge all sites. * Purge Each purge action now has a hook. * Purge Fixed `PURGESINGLE` and `PURGE` query string purge tag bug. * Purge `PURGE` will purge the single URL only like `PURGESINGLE`. * ESI Fixed a log logic failure when ESI buffer is empty. * ESI Added Elementor nonces (jujube0ajluxl PR#736) * ESI Fixed a no-cache issue in no-vary ESI requests that occurred when `Login Cookie` was set. * ESI ESI will no longer send cookie update headers. * Vary Vary name correction, which used to happen in the `after_setup_theme` hook, now happens later in the `init` hook. * Crawler Enhanced hash generation function for cryptographic security. * Crawler Added back `Role Simulator` w/ IP limited to `127.0.0.1` only. Use `LITESPEED_CRAWLER_LOCAL_PORT` to use 80 if original server does not support 443. * Crawler Enhanced Role Simulator security by disallowing editor or above access in settings. * Crawler Defaulted and limited crawler `Run Duration` maximum to 900 seconds and dropped the setting. * Crawler Crawler will be stopped when load limit setting is 0. * Crawler Dropped `Delay` setting. Added PHP const `LITESPEED_CRAWLER_USLEEP` support. * Crawler Dropped `Timeout` setting. Added PHP const `LITESPEED_CRAWLER_TIMEOUT` support. * Crawler Dropped `Threads` setting. Added PHP const `LITESPEED_CRAWLER_THREADS` support. * Crawler Dropped `Interval Between Runs` setting. Added PHP const `LITESPEED_CRAWLER_RUN_INTERVAL` support. * Crawler Dropped `Sitemap Timeout` setting. Added PHP const `LITESPEED_CRAWLER_MAP_TIMEOUT` support. * Crawler Dropped `Drop Domain from Sitemap` setting. Added PHP const `LITESPEED_CRAWLER_DROP_DOMAIN` support. * Crawler Fixed wrong path of .pid file under wp-admin folder in certain case. (igobybus) * Crawler Show an empty map error and disabled crawler when the map is not set yet. * Page Optimize Updated request link parser to follow the site permalink. (Mijnheer Eetpraat #766) * Page Optimize Updated latest CSS/JS optimization library to fix issues for RGB minification and external imports when combining CSS. * Page Optimize Exclude Google Analytics from JavaScript optimization. (James M. Joyce #269 PR#726) * Page Optimize Fixed typo in `LITESPEED_NO_OPTM` constant definition. (Roy Orbitson PR#796) * CDN Fixed CDN replacement for inline CSS url with round brackets case. (agodbu) * GUI Added an Online Service tab under General menu. * GUI Added a QUIC.cloud CDN tab. * GUI Combined all Crawler settings to a single setting tab. * GUI Switch buttons rtl compatibility. (Eliza/Mehrshad Darzi #603) * GUI Fixed an issue where an irremovable banner couldn't be echoed directly. * GUI Limited page speed chart to cacheable servers only. * Tag Fixed a potential warning in tags. (ikiterder) * Tag Appended AJAX action to cache tags. * Tag Dropped normal HTTP code. Only error codes (403/404/500) will be used for tags. * Misc Fixed fatal activation error on Network installation when no other plugins are active. (PR#808 #9496550) * Misc Improved README file by adding minimum supported PHP/WordPress versions. (Viktor Szépe) * Misc Added reliance on just-in-time translation loading. (Pascal Birchler #738) * Misc Will now check whether the filename is valid before saving a file to fix the possible Object Cache log issue. (Mahdi Akrami #761) * Misc Fixed PHP 7.2 compatibility in cloud message. (Viktor Szépe #771) * Misc Incompatibility warning banner for third party plugins is now dismissible. * Misc Generated robots.txt file under litespeed folder to discourage search engine indexing of static resource files. (djwilko12) * Debug Escalated debug initialization to as early as possible to allow more configuration information to be logged. * 3rd Fixed warning in Buddy Press code integration. (Viktor Szépe/antipole PR#778) = 6.5.4 - Dec 16 2024 = * Page Optimize Fixed Google Fonts broken with the Async option. (HivePress #787) = 6.5.3 - Dec 4 2024 = * Misc Quote escaped in attributes when building HTML. (CVE-2024-51915) = 6.5.2 - Oct 17 2024 = * Crawler Removed barely used Role Simulator from Crawler, to prevent potential security issues. * Misc Removed `mt_srand` function in random hash generation to slightly improve the hash result. = 6.5.1 - Sep 25 2024 = * Security This release includes two security updates to enhance the post validation of the editor (CVE-2024-47373), and to secure the GUI queue display from malicious vary input (CVE-2024-47374). * Media Sanitized dimensions for the images when replacing with placeholders. (TaiYou) * Page Optimize Sanitized vary value in queue list. (TaiYou) * Cloud Silent API error when failing to retrieve news updates. = 6.5.0.2 - Sep 6 2024 = * Debug Compatibility improvement for WP installations w/o `AUTH_KEY` defined in `wp-config.php`. = 6.5.0.1 - Sep 4 2024 = * 🔥Debug Fixed a corner case fatal error when Object Cache is ON but failed to connect, and `wp-content/litespeed` directory is not writable, and debug option is ON. = 6.5 - Sep 4 2024 = ❗Security* This release includes several debug log improvements for improved security, as listed below. Update strongly recommended. * Debug Moved debug log to litespeed individual folder `/wp-content/litespeed/debug/`. * Debug Disallowed visits to `/litespeed/debug/` folder log files in .htaccess. * Debug Dropped const `LSCWP_DEBUG_PATH` support. * Debug Renamed `debug.purge.log` to `purge.log`. * Debug Added dummy `index.php` for debug folder. * Debug Used random string for log filenames. * Debug Removed cookies-related info. (Thanks to Rafie) * Debug Dropped `Log Cookies` option. * Report Escaped report content to protect it from potential XSS attack. (Islam R alsaid #505746) * ESI Added nonce for Advanced Custom Fields + Advanced Forms. (David Lapointe Gilbert #439) * Purge Run ACTION_PURGE_EMPTYCACHE even if cache is disabled in network admin. (Philip #453) * Page Optimize Disable UCSS exclusion when UCSS is inactived. (#640) * 3rd Fixed undefined warning in WooCommerce Widgets. (Lolosan #719) * 3rd Correct the integration with User Switching. (John Blackbourn #725) * 3rd Fixed Admin Bar Missing issue on DIVI + Elementor frontend. (thyran/robertstaddon PR#727) = 6.4.1 - Aug 19 2024 = * ❗Security This release patches a security issue that may affect previous LSCWP versions since v1.9. * 🐞Page Optimize Fixed HTML minification returning blank page issue. (#706) * 🐞CDN Fixed a bug when Cloudflare status option is empty. (#684 #992174) * Core Minimum required WP version escalated to WP v4.9. = 6.4 - Aug 13 2024 = * Cache Corrected QC and LSADC cache hit status. * Cloud Allow partner info removal in QUIC.cloud notification. * Crawler Separated CSS preparation validation from crawler validation. * GUI Moved `WordPress Image Quality Control` setting from `Image Optimization` menu to `Page Optimization` menu. * 3rd Add Elementor Edit button back in ESI. (PR#635) * 3rd Fixed Instant click potential conflict w/ other plugins. = 6.3.0.1 - Jul 29 2024 = * 🔥🐞Rest Disabled WP default Editor cache for REST requests to fix editor errors. (Shivam) * Cache Supported `cache_nocacheable.txt` predefined settings. = 6.3 - Jul 22 2024 = * 🌱Page Optimize HTML Keep Comments: When minifying HTML do not discard comments that match a specified pattern. (#328853) * 🌱Cache Cache POST requests. Now can configure POST/GET AJAX requests to be cached. (#647300) * Cache Bypass admin initialization when doing ajax call. (Tim) * Cache Better control over the cache location #541 (Gal Baras/Tanvir Israq) * Cloud Added nonce for callback validation to enhance security. (Chloe@Wordfence) * Cloud Fixed an error message for daily quota. * Cloud Display error message when communicating with QUIC.cloud causes a token error. * ESI Bypass ESI at an earlier stage when getting `DONOTCACHEPAGE`. * ESI Added ESI nonce for Events Calendar and jetMenu mobile hamburger menu. (#306983 #163710 PR#419) * ESI Added WP Data Access nonce (PR#665) * ESI Added WP User Frontend ESI nonce (PR#675) * Media Ignored images from JS in image size detection (PR#660) * GUI Moved Preset menu from network level to site level for multisite networks. * GUI Suppressed sitemap generation message if not triggered manually. * GUI Added CloudFlare purge to front end menu. * GUI Allowed customized partner CDN login link on dash. * Page Optimize Cleaned up litespeed_url table when clearing url files. (PR#664) * Page Optimize Updated Instant Click library to version 5.2.0. * Page Optimize Added Flatsome theme random string excludes. (PR#415) * Page Optimize Exclude Cloudflare turnstile from JS optimizations. (Tobolo) * Page Optimize Fixed Cloudflare Turnstile issues. (Contributolo PR#671/672) * Object Improved debug log for object cache status. (PR#669) * Object Added brief parseable header comments to the drop-in file. (OllieJones) * Debug Trimmed debug log. * Misc Improved compatibility and sped up resolving for JSON functions `json_encode/json_decode`. (hosni/szepeviktor #693) * Misc Fixed typos in params and comments. (szepeviktor #688) * Image Optimization Fixed an issue which suppressed new requests when there were no new images in the library but there were unprocessed images in the send queue. * Image Optimization Improved Cloud side quota check by disallowing new requests if notified but not pulled. * Image Optimization Keep image attributes when replacing dimensions. (PR#686 #381779) = 6.2.0.1 - Apr 25 2024 = * 🔥🐞Page Optimize Fixed the image display issue that occurs with Elementor's `data-settings` attribute when the WebP image is not yet ready. (kanten/cbwwebmaster/reedock #132840 #680939 #326525) = 6.2 - Apr 23 2024 = * 🌱Crawler Added Crawler hit/miss filter. (#328853) * 🌱CLI Image optimization now supports `wp litespeed-image batch_switch orig/optm`. (A2Hosting) * 🌱VPI Auto preload VPI images. (Ankit) * Object Added support for username/password authentication for Redis (PR#616 Donatas Abraitis/hostinger) * Page Optimize Now supporting Elementors data-settings WebP replacement. (Thanks to Ryan D) * Cache Send `Cache-Control: no-cache, no-store, must-revalidate, max-age=0` when page is not cacheable. (asafm7/Ruikai) * Cache Cache control will respect `X-Http-Method-Override` now. (George) * Cache No cache for `X-Http-Method-Override: HEAD`. (George) * Cache Specified LSCWP in adv-cache compatible file. * Cache Fixed redirection loop if query string has tailing ampersand (#389629) * Cache Dropped "Cache Favicon.ico" option as it is redundant with 404 cache. (Lauren) * Cache Fixed deprecated PHP v8 warning in page redirection. (Issue#617 dcx15) * Cloud REST callback used ACL for QC ips validation. * Cloud Fixed a typo in parsing cloud msg which prevented error messages to show. * Cloud Carried on PHP ver for better version detection purpose. * Cloud Escaped token to show correctly in report. * Cloud Fixed a QC cloud ip verification setup failure in PHP 5.3. * 🐞Cloud Fixed a continual new version detection. * 🐞Image Optimize Fixed a summary counter mismatch for finished images. (A2Hosting) * CDN Auto CDN setup compatibility with WP versions less than 5.3. * 🐞CDN Fixed wrong replacement of non image files in image replacement. (Lucas) * GUI Further filtered admin banner messages to prevent from existing danger code in database. * REST Fixed a potential PHP warning in REST check when param is empty. (metikar) = 6.1 - Feb 1 2024 = * 🌱Database New Clear Orphaned Post Meta optimizer function. * Image Optimize Fixed possible PHP warning for WP requests library response. * Image Optimize Unlocked `noabort` to all async tasks to avoid image optimization timeout. (Peter Wells) * Image Optimize Fixed an issue where images weren't being pulled with older versions of WordPress. (PR#608) * Image Optimize Improved exception handling when node server cert expire. * 🐞Image Optimize The failed to pull images due to 404 expiry will now be able to send the request again. * Crawler CLI will now be able to force crawling even if a crawl was recently initiated within the plugin GUI. * Page Optimize Fixed a dynamic property creation warning in PHP8. (PR#606) * Page Optimize Fixed an issue where getimagesize could cause page optimization to fail. (PR#607) * Tag Fixed an array to string conversion warning. (PR#604) * Object Cache Return false to prevent PHP warning when Redis fails to set a value. (PR#612) * Cache Tag Fixed an issue where $wp_query is null when getting cache tags. (PR#589) = 6.0.0.1 - Dec 15 2023 = * 🐞Image Optimize Grouped the taken notification to regional center servers to reduce the load after image pulled. = 6.0 - Dec 12 2023 = * 🌱Image Optimize Parallel pull. (⭐ Contributed by Peter Wells #581) * 🌱Cache CLI Crawler. * 🌱Cache New Vary Cookies option. * 🌱Media New Preload Featured Image option. (Ankit) * Core Codebase safety review. (Special thanks to Rafie Muhammad @ Patchstack) * Purge Purge will not show QC message if no queue is cleared. * Purge Fixed a potential warning when post type is not as expected. (victorzink) * Conf Server IP field may now be emptied. (#111647) * Conf CloudFlare CDN setting vulnerability patch. (Gulshan Kumar #541805) * Crawler Suppressed sitemap generation msg when running by cron. * Crawler PHP v8.2 Dynamic property creation warning fix. (oldrup #586) * VPI VPI can now support non-alphabet filenames. * VPI Fixed PHP8.2 deprecated warning. (Ryan D) * ESI Fixed ESI nonce showing only HTML comment issue. (Giorgos K.) * 🐞Page Optimize Fixed a fatal PHP error caused by the WHM plugin's Mass Enable for services not in use. (Michael) * 🐞Network Fix in-memory options for multisites. (Tynan #588) * Network Correct `Disable All Features` link for Multisite. * 🐞Image Optimize Removing original image will also remove optimized images. * Image Optimize Increased time limit for pull process. * Image Optimize Last pull time and cron tag now included in optimization summary. * Image Optimize Fixed Elementors Slideshow unusual background images. (Ryan D) * 🐞Database Optimize Fix an issue where cleaning post revisions would fail while cleaning postmeta. (Tynan #596) * Crawler Added status updates to CLI. (Lars) * 3rd WPML product category purge for WooCommerce. (Tynan #577) = 5.7.0.1 - Oct 25 2023 = * GUI Improvements to admin banner messaging. (#694622) * CDN Improvements to CDN Setup. (#694622) * Image Optimize Improvements to the process of checking image identification. (#694622) = 5.7 - Oct 10 2023 = * 🌱Page Optimize New option available: Preconnect. (xguiboy/Mukesh Patel) * 🌱3rd New Vary for Mini Cart option for WooCommerce. (Ruikai) * Cloud Force syncing the configuration to QUIC.cloud if CDN is reenabled. * Cloud Force syncing the configuration to QUIC.cloud if domain key is readded. * Cloud Limit multi-line fields when posting to QC. * Cache Treat HEAD requests as cacheable as GET. (George Wang) * 🐞ESI Patched a possible vulnerability issue. (István Márton@Wordfence #841011) * 🐞ESI Overwrite SCRIPT_URI to prevent ESI sub request resulting in redirections. (Tobolo) * 🐞Image Optimize Bypass unnecessary image processing when images were only partially optimized. (Ruikai) * 🐞Guest Guest mode will not enable WebP directly anymore. (Michael Heymann) * CDN Auto disable CDN if CDN URL is invalid. (Ruikai) * CDN Fixed a null parameter warning for PHP v8.1 (#584) * API Added `litespeed_media_add_missing_sizes` filter to allow bypassing Media's "add missing sizes" option (for Guest Optimization and otherwise). (PR #564) * Guest Fixed soft 404 and robots.txt report for guest.vary.php. * Vary Enabled `litespeed_vary_cookies` for LSWS Enterprise. * GUI Stopped WebP tip from wrongly displaying when Guest Mode is off. * GUI Added QUIC.cloud promotion postbox on dashboard page. * 3rd Added `pagespeed ninja` to blocklist due to its bad behavior.