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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: 7.3.0.1 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 == = 7.3.0.1 - 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.
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