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Releases (53 )

Version Release Date Change Log
0.14.1 2020-05-28
  • Fixed CSS minify URL rewrite logic that affected some lazy loading and CSS URL addresses using protocols
0.14.0 2020-05-27
  • Added lazy loading for Google Maps
  • Added a filter w3tc_minify_css_content for minified contents
  • Fixed a minify regex issue in non-Unicode websites
  • Fixed a PHP notice in WPMU: accessing array offset on null
  • Fixed a minify issue where embedded CSS URL fragments were converted incorrectly
  • i18n improvement
  • Changed default to disabled for wp-admin requests in the object cache
0.13.3 2020-04-28
  • Fixed HTML minification of img elements containing embedded SVG strings
  • Removed an identifying value for GDPR
0.13.2 2020-04-08
  • Fix: Dont store content of HEAD requests.
  • Updated informational URL on page cache static page comments.
0.13.1 2020-03-31
  • Fixed php warnings in PgCache_ContentGrabber.php
0.13.0 2020-01-30
  • Added new Pro feature, Debug - Purge Stack Trace
  • Added "Feature Policy" security header
  • Removed deprecated get_magic_quotes_gpc()
  • Improved AMP Extension by ignoring value of amp querystring marker in request if passed without value in config
  • Improved lazyload by not processing elements with skip-lazy class or data-skip-lazy attribute
  • Fixed caching of query-string normalization redirects, no longer cached when cache key is normalized by accept querystring arguments, caused redirect loop
0.12.0 2019-12-18
  • Added querystring based URL structures for AMP pages
  • Added filter of minify options
  • Added lazyload picture tag support
  • Removed footer link "Support Us" option
  • Improved wp_die handling
  • Improved lazyload handling of content in script tags
  • Improved lazyload handling of feeds
  • Improved printing tags coming from feeds
  • Improved handling of modified posts before wp_rewrite initialized
  • Nginx rules changed a lot to avoid "location" block conflicts. That change may cause problems on some systems using non-default WordPress rules - keep a backup of your original rules
  • Improved handling of .htaccess files in regard to EOF
  • Fixed Varnish purging
  • Fixed html minification of data tags equaling 0
0.11.0 2019-11-21
  • Added recommendation for BoldGrid's Total Upkeep plugin
  • Added new lazy loading feature
  • Removed New Relic extension by default for new installations
  • Updated usage of html minification and quote removal
  • Improved memcached config and added optional binary protocol setting
  • Improved process of renewing expired licenses
  • Improved page cache purging
  • Improved FAQ link by opening in new window
  • Improved detection of detect_post_id
  • Improved REST caching in relation to cache headers like X-WP-*
  • Improved Vary User-Agent header usage
  • Improved various features with AMP pages and HTTP2
  • Improved redis connection string to allow for tls://host:port format
  • Fixed file headers for Cloudfront S3 CDN
  • Fixed fatal error on with flush / SNS
  • Fixed comments with URLs within minify debug mode
  • Fixed ObjectCache statistics within footer
  • Fixed temporary hotfix with wp_die and regular output
  • Fixed fragment cache header link
  • Fixed flushing of /feed and /feed/ cache
  • Fixed js error in widget
  • Fixed fatal cache flush error caused by empty $wp_rewrite
  • Fixed path for file_generic REST caching on non-default port
  • Fixed test minify button with Closure Compiler engine
0.10.2 2019-11-13
  • Fixed compatibility with wpdb::prepare in WordPress 5.3
0.10.1 2019-09-11
  • Fixed slowdown in memcached engine
  • Fixed Purge Cache menu links so they flush current blog in WPMU
  • Fixed error during upgrade, "Call to undefined method W3TC\Util_Content::is_database_error"
  • Updated Redis cache engine to avoid "Function Redis::delete() is deprecated" warning
0.10.0 2019-09-05
  • Improved Statistics component for pro users
  • Improved support for CloudFront distributions with multiple origins
  • Improved redirects by using safter wp_safe redirect
  • Improved .htaccess usage when pagecache does not require it
  • Improved protection of unexpected values in global variables
  • Added more Amazon S3 regions
  • Added support for memcached binary protocol when available
  • Added caching for webp MIME type
  • Updated S3 bucket creation by settings CORS policy
  • Updated blogmap to allow urls with custom ports
  • Fixed usage of base url with minify
  • Fixed mixing content of sync & async scripts with minify

  • Fixed S3 + CloudFront urls when CNAMEs not used

0.9.7.5 2019-06-05
  • Updated AWS library
  • Added support of set_sql_mode by dbcluster
  • Improved support for webserver running on non-default port with disk-enhanced
  • Improved menu icons
  • Fixed php warning when remote service cannot be loaded
  • Fixed php warnings on support page
0.9.7.4 2019-05-06
  • Fixed PHP warning when Redis integration not configured correctly
  • Fixed 404 in multisite caused by subdirectory issue
  • Fixed object cache issue in multisite where object cache was cleared at wrong time
  • Fixed database cluster in WordPress 5.1
  • Fixed warning caused by user agent theme change used
  • Fixed minification in multisite when URLs were set to root-blog based url
  • Fixed undefined w3tc_ga issue
  • Improved purging of current page by using post_id instead of URL
  • Improved cache delivery of /feed URLs
  • Improved security on calls to opcache flush
  • Improved minification of files in environments running on non-default ports
0.9.7.3 2019-03-26
  • Fixed caching of redirect responses based on empty response body
  • Improved compatibility with WordPress 5.1
  • Improved transports, unix: prefix not required
  • Improved minify html
0.9.7.2 2019-01-30
  • Fixed fatal error during media file upload with CDN module active
  • Fixed removal of empty values, JSON encoded string in attribute, trailing quote at end of tag, and the handling of anchors in HTML minify
  • Fixed undefined index warning
  • Fixed fatal error when purging CDN using full site delivery
0.9.7.1 2019-01-24
  • Fixed undefined variable notice
  • Fixed "No such file or directory" warning
  • Fixed writing to PHP error log rather than WordPress debug log
  • Fixed default referrer policy should be "no-referrer-when-downgrade"
  • Fixed php_flag error related to browser cache, using ini_set instead
  • Fixed CloudFlare IPv6 check undefined offset
  • Fixed Undefined constant WP_ROOT
  • Fixed frame-ancestors being overwritten by frame-src
  • Fixed missing semicolon in nginx configuration
  • Fixed HTTP/2 URLs handling for browser cache and CDN modules
  • Fixed display of CDN debug information
  • Fixed CSS Minification with Google Fonts when included via "Include external files/libraries" and non-latin character-sets are loaded
  • Fixed media query string not updating when all caches were purged
  • Fixed double slash with ABSPATH if file exists
  • Fixed setting max-age and expires header simultaneously
  • Fixed SASL detection for PECL Memcached
  • Fixed handling of manually entered objects to be purged on CDN
  • Fixed query string handling in Nginx
  • Improved error handling with Cloudfront
  • Improved page cache logging
  • Improved multi-tenant support for memory-based caching engines
  • Improved CSS minification
  • Improved purge behavior for changed media objects when using CDN
  • Improved compatibility with sitemap plugins
  • Added support for Memcached for Nginx
  • Added support for caching webm files
  • Added Brotli HTTP compression support
  • Added StackPath full site delivery support
  • Added wc_session to the list of ignored query stems for improved WooCommerce compatibility
0.9.7 2018-04-25
  • Fixed minified files not being hosted by CDN when enabled if "host minified files" is disabled
  • Fixed warning thrown when purge all was selected (via nigrosimone)
  • Fixed undefined offset error in fragment cache
  • Fixed MaxCDN test button failure when debug mode is enabled
  • Fixed purging of feeds when cache feeds option is enabeld
  • Improved handling of errors when full site delivery isn't set
  • Improved nginx.conf to support xml caching
  • Improved nginx.conf to support HSTS for static files
  • Improved minify's handling of query strings
  • Improved database caching, frequent wp_options no longer flush posts or comments data
  • Improved Limelight Networks CDN integration
  • Improved FAQ, they're now hosted in the GitHub public repository
  • Improved handling for /<![CDATA[/ in HTML minify engine
  • Imporved garbage collection for basic disk caching
  • Improved HSTS support (via Dave Welsh)
  • Improved reliabilty of CSS embed options
  • Improved New Relic requirements in compatibility test
  • Added StackPath CDN integration (including full site delivery)
  • Added support for page cache priming via WP-CLI via prime function
  • Added filter support for managing cache groups
  • Added API for flushing individual cache groups via flush_group function
  • Added purge support for JSON cache e.g. cached REST API requests
  • Added filter support for managing database cache settings
  • Added filter support before (w3tc_process_content) and after (w3tc_processed_content) a cache object is created
  • Added compatibility for AMPforWP plugin
  • Added JSON caching support for Pro subscribers
  • Added additional security headers (via amiga-500)
0.9.6 2017-12-11
  • Fixed anonymous usage tracking, default to disabled
  • Fixed incorrect minify cache data written if target directory missing
  • Fixed empty minify cache file written when file locking enabled
  • Fixed missing commas in CSS (@nigrosimone)
  • Fixed typo in object cache engine (@Furniel)
  • Fixed incorrect reuse of redis connections when persistent connections option enabled
  • Fixed reliability of Google Drive (via jikamens)
  • Fixed handling of UTF-8 encoded files by writing them in binary (via jikamens)
  • Improved Full Site Delivery configuration user flow on the General and CDN settings screens
  • Improved content type matching and cache hits as a result
  • Improved minify file locking logic
  • Improved visual langage of the compatibility test (@Furniel)
  • Improved configuration file management
  • Improved MaxCDN set up wizard
  • Improved page cache's accepted query string handling to handle optional values and add support for disk enhanced mode (via amiga-500, nigrosimone)
  • Improved handling of timeouts to origin push CDN proviers
  • Added HTTP/2 push headers for disk enhanced page caching (via nigrosimone)
  • Added X-Forwarded-Proto header for use cases like HTTPS recognition behind proxies or load balancers
  • Added multiple CDN support i.e. static file objects and pages, posts, feeds, API responses etc to use different respective CDN providers
  • Added page caching by cookie name or value (sponsored by SQweb)
  • Added toggle for CORS header to improve inter-operatbility with various CDN providers
  • Added support for CDN hosted media to media library (inspired by amiga-500)
  • Added object caching of AJAX calls (via andyexeter)
  • Enterprise features are now available to Pro subscribers! Including reading from multiple databases concurrently and purging caches across multiple hosts via a Message Bus
0.9.5.4 2017-04-26
  • Fixed regression with browser caching and query strings
0.9.5.3 2017-04-25
  • Fixed handling of HTTP compressed documents in PHP v5.3 (via amiga-500)
  • Fixed a bug with accelerated mobile pages (via nigrosimone)
  • Improved reliability of minify in manual mode
  • Improved JavaScript interoperability with CDATA use cases
  • Improved file name generation on Windows for IIS servers
  • Improved handling of # in URLs
  • Improved handling of exclusions for e-commerce in Genesis Framework
  • Improved handling of headers for Microsoft Azure
  • Improved functionality with existing Cloudfront Distributions when configuring Full Site Delivery
  • Improved minify debug logging
  • Improved handling of URLs that omit the protocol
  • Improved handling of custom files with CDN (via amiga-500)
  • Updated CSSTidy library (via nigrosimone and amiga-500)
  • Added Swarmify Video Optimization Extension [Hat tip the Swarmify Team]
  • Added flushing of AMP pages
0.9.5.2 2017-01-17
  • Fixed security issue by protecting configuration data by adding .php to relevant files
  • Fixed security issue with the creation of dot folders that could be abused
  • Fixed handling HTTP compression for uncached pages
  • Fixed handling of .svgz files
  • Added expiration headers to webP images
  • Added support for Microsoft Azures latest API
  • Added ability to cache WP Admin. Recommended setting, is off. (Improved WP Admin performance with object caching enabled)
  • Added HTTP/2 Push support for minified files
  • Added option management support for wp-cli
  • Improved handling of uncompressed minified files
  • Improved handling of purging of modified pages / posts
  • Improved compatibility with Rackspace Cloud Files
  • Improved initial CDN configuration reliability
  • Improved reliability of object caching
  • Improved PHP 7.0 compatibility
  • Improved PHP 4.3 compatibility
  • Improved HTTP/2 support
  • Improved CSS embed handling
  • Improved reliability of object cache, transients now fallback to database
  • Improved handling of cached http compressed objects
0.9.5.1 2016-09-30
  • Fixed missing namespace, which caused issues with other implementations of Google APIs
  • Fixed handling Cloudflare zone list being incomplete for users with many zones
  • Added extension to support Accelerated Mobile Pages (AMP)
  • Added notification for users that are still using PHP 5.2 (end of life in 2011)
  • Improved default settings
  • Improved compatibility with Yoast SEO sitemap caching
  • Improved compatability with Jetpack
  • Improved directory handling on IIS
  • Improved backwards compatibility for 3rd party implementations against legacy W3TC functions
0.9.5 2016-09-26
  • Fixed XSS vulnerability
  • Fixed issues with dismissing overlays
  • Fixed handling of tilde in URLs
  • Fixed issue with HTTP compression header when using mfunc calls
  • Fixed cache ID issue with minify in network mode
  • Fixed rare issue of caching empty document when some PHP errors occur in themes or plugins
  • Fixed caching of query strings
  • Added support for APCu Opcode Cache
  • Added support for Redis
  • Added support for Google Drive
  • Added support for Amazon S3-compatible stroage services
  • Added support for PECL memcached
  • Added support for srcset elements
  • Added support for Rackspace CDN Origin Pull
  • Added support for minification of external fonts
  • Added support for WOFF2 font format
  • Added support for FTPS (FTP-SSL, S-FTP)
  • Added YUI Compressor's PHP Port of the CSS minifier
  • Added Narcissus' JS minifier
  • Added purge of parent page when attachments are added or updated
  • Added Highwinds CDN provider
  • Added "Validate Timestamps" option for compatible opcode caches functions like apc.stat are enabled
  • Added Full Site Delivery for Pro subscribers
  • Added HTTP Strict Transport Security (HSTS) support
  • Added a sample extension for developers to reference
  • Added Rackspace Cloud Files Multi-Region Support
  • Added more support for exclusions to database cache
  • Added more optionality to minifiers
  • Added WPML Performance Extension
  • Improved PHP 5.6 compatibility
  • Improved PHP 7 compatibility
  • Improved performance menu in admin bar, including purging of specific cache engines and more
  • Improved SSL inter-operability
  • Improved reliablity of test buttons
  • Improved nomenclature of caching files for higher cache hit rates
  • Improved nginx compatibility
  • Improved WP CLI support
  • Improved Cloudflare compatibility (now using latest APIs)
  • Improved AWS API compatibility (now using latest APIs)
  • Improved Rackspace Cloud Files compatibility (now using latest APIs)
  • Improved page cache purge for extensions like cloudflare and other reverse proxy use cases
  • Improved extension framework functionality
  • Improved compatibility of headers like eTag and content encoding
  • Improved template fragment caching
  • Improved notifications, warnings and errors
  • Improved moble user agents detection
  • Improved security with nonces and form elements
  • Improved security throughout the codebase
  • Improved detail of debug messages
  • Improved Amazon SNS security (validation)
  • Improved minify's ability to match script tags without type attribute
0.9.4.1 2016-03-21
  • Fixed security issue if debug mode is enabled XSS vector exists HTML comments. CVE-2014-8724, Tobias Glemser
  • Fixed security issue with missing nonces, Ryan Satterfield
0.9.4 2014-09-19
  • Fixed undefined w3tc_button_link
  • Fixed support and other form submissions
  • Fixed extension enabled key error
  • Fixed Test CDN errors
  • Fixed trailing slashes in custom wp content path and Minify
  • Fixed WP_PLUGIN_DIR not being available when object-cache.php is loaded and W3TC constant not set
  • Fixed Minify Auto and restructuring of JS code placement on page
  • Fixed remove / replace drop in file on plugins page
  • Fixed false positive check for legacy code
  • Fixed deprecated wpdb escape
  • Fixed Fragment Caching and APC anomalies
  • Fixed cached configs causing 500 error on interrupted file writes
  • Fixed readfile errors on servers with the functionality disabled
  • Fixed false positives for license key verification
  • Fixed debug information not printed on cached pages
  • Fixed backwards compatibility and flushing and added doing it wrong notification
  • Fixed "Prevent caching of objects after settings change"
  • Fixed "Use late init" being shown as enabled with Disc:Enhanced
  • Fixed missing param in APC cache method declaration
  • Fixed user roles property not begin an array
  • Fixed adding empty Vary header
  • Fixed notice on failed upgrade licencing check
  • Fixed Database Cache description text
  • Fixed duplicate bb10 agents
  • Fixed settings link in Minify Auto notification
  • Fixed notice with undefined constant
  • Fixed nginx configuration and Referrer, User Groups setting
  • Fixed Genesis settings and Suhosin field name limit error
  • Fixed Genesis and Fragment Caching (caching categories etc)
  • Fixed CDN being enabled when creating NetDNA/MaxCDN pullzone
  • Fixed NewRelic related notice in compatibility popup
  • Fixed trailing slash issue in filename to url conversion
  • Fixed issue with wp in subdirectory and relative Minimal Manual urls
  • Fixed issue with widget styling
  • Fixed issue with Purge All button action
  • Fixed issue with exporting of settings
  • Fixed issue with plugin interferring with preview theme
  • Fixed issue with malformed config files
  • Added caching of list of posts pages (tags, categories etc) to Genesis extension a long with flush it checkbox
  • Added typecasting on expiration time in object cache drop-in
  • Added capability check for save options
  • Added FeedBurner extension
  • Added woff support to Browser Cache
  • Added new CloudFlare IPs
  • Added support for WordPress defined charset and collate in CDN queue table creation
  • Added WordPress SEO by Yoast extension
  • Added *.less to CDN theme uploads and MIME
  • Added default settings for MaxCDN Pull Zone creation
  • Added call to change MaxCDN canonical header setting to match plugin setting
  • Added one button default pull zone creation to MaxCDN without refresh
  • Added MaxCDN authorization validation
  • Added whitelist IPs notification for MaxCDN
  • Added support for use of existing zones without refresh
  • Added new mime types
  • Added support for separate domains for frontend and admin backend
  • Added CloudFlare as an extension
  • Added nofollow to blogroll links
  • Added DEV mode support to PRO version
  • Added EDGE MODE functionality
  • Improved wrapper functions in plugins.php for plugin / theme authors
  • Improved reliability of NetDNA / MaxCDN API calls by using WP HTTP and not cURL
  • Improved Fragment Caching debug information
  • Improved preview mode, removed query string requirement
  • Improved FAQ structure
  • Improved empty minify/pgcache cache notification when using CDN
  • Improved default settings for MaxCDN zone creation
  • Improved CDN queue performance
  • Improved blogmap url sanitation
  • Improved MaxCDN automatic zone creation process
  • Improved license key saving and Pro mode activation on Pro license purchases
  • Updated EDGE MODE: Full site mirroring support for MaxCDN
  • Updated translations
0.9.3 2013-11-25
  • Added support for extensions
  • Added support for WordPress SEO image filter and CDN
  • Added file exclusions for media query string logic
  • Added user agents to user agents groups
  • Added CDN FTP path / host test
  • Fixed object cache and database cache for localization plugins
  • Fixed chinese filenames when using CDN
  • Fixed removal of stale cached files
  • Fixed missing slashes in inline HTML, JS and CSS files when using CDN
  • Fixed auto mode of minify filename length test
  • Fixed NetDNA / MaxCDN testing when domain does not match domain zone settings
  • Fixed CurlException and NetDNA / MaxCDN
  • Fixed pull zone dropdown not showing or showing wrong zone
  • Fixed trailing slash and redirect with apache
  • Fixed false notification for page cache rules verification
  • Fixed duplicate notifications for FTP
  • Fixed empty FTP form
  • Fixed add-in file validation
  • Fixed browser cache headers for proxy cases
  • Fixed wrong slash in Minify filepaths on windows based sites
  • Fixed settings link in minify test failure and multisite
  • Fixed missing param in canonical link generation
  • Fixed PHP 5.2 compatibility
  • Fixed handling of minify in preview mode
  • Fixed order of operation issue on install tab for nginx
  • Fixed translatable strings handling
  • Fixed page cache debug mode issues
  • Fixed home URL handling in multisite
  • Fixed manual minify mode and path based file source for sub-directory installations
  • Fixed path not set in disk enhanced caching
  • Fixed page cache rewrite rule detection
  • Improved security with esc_* usage
  • Improved backend performance with extensive refactoring
0.9.2.11 2013-05-22
  • Added option to disable the Minify Auto filename length test and specify manual value for hosting environments like Windows that require it
  • Fixed NetDNA / MaxCDN authorization key issues
  • Fixed OAuth name conflict for NetDNA / MaxCDN
  • Fixed CDN and CNAME replacement for minify URLs
  • Fixed WordPress sub-directory issue
  • Fixed handling of moved / renamed wp-content and plugin directory
  • Fixed Multisite issue when CDN is enabled and Minify is in auto mode and network-wide settings are applied
  • Fixed late init handling
  • Fixed handling of HTML debug comments being incorrectly inserted into documents
  • Improved minify auto file naming for single install
  • Improved page caching performance in NFS-based hosting environments
0.9.2.10 2013-05-14
  • Added NetDNA / MaxCDN dashboard widget
  • Added zone dropdown for NetDNA and MaxCDN CDNs
  • Added create pull zone for NetDNA and MaxCDN CDNs
  • Added notification(s) if incompatible plugins are detected
  • Added "Disable CDN on the following pages" setting
  • Added "Disable CDN on SSL pages" setting
  • Added late init support for page cache's fragment caching
  • Added POT file
  • Added translations NL, PL
  • Fixed setenvif issue in htaccess rules
  • Fixed failed rewrite (404) and not caching feeds in nginx
  • Fixed NetDNA / MaxCDN CNAME purging issues and "Test CDN" functionality
  • Fixed Azure container handling
  • Fixed New Relic verification
  • Fixed theme preview
  • Fixed wrong path issue with w3tc-wp-loader.php
  • Fixed auto mode of Minify and filename lengths
  • Fixed purging monthly archives with Varnish
  • Fixed insert, delete, update quries purging with database cache
  • Fixed HTTP compression when dynamic page fragments are used
  • Fixed PHP_STRING and other warnings
  • Fixed case sensitive header detection
  • Fixed HEAD request handling
  • Fixed event scheduling propagation in Multi Site
  • Improved CDN custom file paths
  • Improved handling of legacy config files
  • Improved NetDNA / MaxCDN alias, key, secret string handling (backwards compatible)
  • Improved auto mode for minify file naming which was causing unncessary issues
  • Improved handling of hardcoded WordPress paths
  • Improved the file management functionality (FTP support, file permissions etc)
  • Improved disk cache directory usage
  • Improved garbage collection of expired cache files for disk enhanced method of page caching
  • Improved drop-in verification, only adds required drop-ins
  • Improved New Relic error notification handling
  • Improved New Relic "app name" settings with Multi Site
  • Improved cacheable mime type detection in Page Cache
  • Improved ob_callback performance and reduced number of output buffer calls
  • Improved minify handling with CDN and Multi Site
  • Improved Object Cache purge policy performance
  • Improved Database Cache purge policy performance
  • Improved handling of request methods other than GET, POST for page caching
  • Removed setting of New Relic app name in htaccess; set manually or use the dynamic setting on the "Monitoring" tab
0.9.2.9 2013-04-17
  • Fixed saving settings issue with CloudFlare on activation
  • Fixed issue with DbCache and Object Cache flushing
  • Improved security for CloudFlare API calls
  • Improved security for mfunc, now disabled by default and requires security string in order to execute
  • Improved behavior of GET string, used for detecting blogs in disk enhanced page caching mode for multi site to prevent redirect loops and other issues
0.9.2.8 2013-02-09
  • Fixed /tmp file creation issue when saving settings
  • Fixed an issue with auto minify
  • Fixed an issue with New Relic API key verification
  • Fixed uncommon issue with require ObjectCache failing
  • Fixed uncommon open_basedir verification issue
  • Improved notification handling by modified WordPress FileSystem API implementation
  • Added PHP file handling to support cases not covered by default WordPress FileSystem API
0.9.2.7 2013-02-06
  • Fixed config file write in more hosting environments
  • Fixed legacy config file import on servers with hardened file permissions
  • Fixed page cache write cache rules in some environments
  • Fixed retina images
  • Fixed false positive notifications when permissions are not changed or same
  • Fixed minify help
  • Improved upgrade notifications
  • Improved page cache and minify notifications
0.9.2.6 2013-02-05
  • Added support for grouping cache entries for easier flushing
  • Added more options for placing minified files on pages. Custom placements using HTML comments.
  • Added CSS inclusion for auto / manual minify. If present its used: <!-- W3TC-include-css -->
  • Added JS inclusion for minify auto mode. If present its used: <!-- W3TC-include-js-head -->,
  • Added JS inclusion for minify manual mode. If present they are used when selecting correspong location in placement dropdown: <!-- W3TC-include-js-head -->, <!-- W3TC-include-js-body-start -->, <!-- W3TC-include-js-body-end -->
  • Added new minification inclusion options, async, defer, extsrc and asyncsrc
  • Added flushing sitemaps
  • Added flushing custom pages
  • Added flush the current blog when flushing in MultiSite
  • Added flushing home page and/or post page if static
  • Added flushing older pages (page/2, page/3) on purge requests
  • Added flushing a limited amount of pagenumbers
  • Added purging caches for deleted blogs in WordPress MultiSite
  • Added uninstall process to the plugin for easier cleanup
  • Added upgrade support that cleans up and removes old cache folders
  • Added message when disk enhanced page caching is not working properly
  • Added custom wp-content name and locations
  • Added CDN feature "Dont use CDN for specific roles"
  • Added "Purge from cache" link on edit post/page pages
  • Added permalink suffixes (.html, .htm etc)
  • Added uploading blogs.dir files when using MultiSite and CDN
  • Added notification about IAM when using Amazon services (SNS, CloudFront, S3 etc)
  • Added 'Don't minify JS files' 'Don't minify CSS files' options for minify
  • Added Access-Control-Allow-Origin support for CDNs
  • Added hooks clean_post_cache and menu changes
  • Added caching JSON mime-type. Other mime-types can be added using array filter 'w3tc_is_cacheable_content_type'
  • Added automatic reloading of config files when APC apc.stat is disabled
  • Added request reload of APC file over HTTP
  • Added priming of post on publish
  • Added single config file (by default) when using WordPress MultiSite
  • Added switch_to_blog() support
  • Added wp_cache_decr, wp_cache_incr support
  • Added wp_cache_switch_to_blog support
  • Added fragment caching functionality that extends the transient caching methods in WordPress core
  • Added network activation and network policy management
  • Added control for comment cookie lifetime
  • Added Go Daddy SUBDOMAIN_DOCUMENT_ROOT directive support
  • Added JSON to mod_deflate configuration
  • Added JavaScript mime-type variations to mod_deflate configuration
  • Added WP-CLI support for purging cache, purging pull CDNs, reloading APC files, clearing APC, deleting pgcache files, and updating browser query string
  • Added .htc mime type
  • Added Rackspace CloudFiles container location selection
  • Added rejected terms in database cache, to allow for deeper database caching capability
  • Added Akamai CDN origin pull support
  • Added system cache purge when apc.stat is disabled
  • Added origin rel canonical support for CDNs
  • Added AT&T origin pull CDN
  • Added full-page mirroring and purging for origin pull CDNs
  • Added compatibility mode improve disk enhanced page caching performance ~20% for users that don't care about interoperability
  • Added nginx example files
  • Added varnish example files
  • Added basic application monitoring support using New Relic
  • Added application monitoring widget using New Relic
  • Added plugin dashboard page to display widgets etc
  • Added purge from cache link to admin bar dropdown while browser posts/pages on front-end
  • Added purge CDN completely link to admin bar dropdown
  • Added CDN SSL checkbox "Disable CDN on SSL page"
  • Added pull CDN support to MultiSite
  • Fixed caching of the "Front Page" and added an option for the same
  • Fixed w3_url_format function was not included error
  • Fixed security vulnerability with file cache: disk basic page caching, database or object caching to disk. CVEs: CVE-2012-6077, CVE-2012-6078, CVE-2012-6079
  • Fixed issue with concurrent writes to single config file
  • Fixed Preview mode and deploy button
  • Fixed varnish purging (See varnish config example file in ini folder)
  • Fixed false positive notification on Page Cache: Disc Enhanced
  • Fixed broken images for feedburner in dashboard on HTTPS sites
  • Fixed minify ID generation causing notices
  • Fixed false positive on minification related to group configuration among other
  • Fixed default wp-content path and CDN uploads when WordPress is installed in directory
  • Fixed pages not flushing when making changes in WordPress Admin
  • Fixed mod_filter being used on unsupported Apache versions
  • Fixed WordPress upgrade issue caused by W3TC remaining active
  • Fixed minify path when using WordPress MultiSite and blogs in sub-directories
  • Fixed user interface for "Dont cache specific roles"
  • Fixed CDN and minify to file for storage
  • Fixed feed_link filters interferring with feed purging
  • Fixed false positive with minify rewrite test and WordPress MultiSite sub-directory mode
  • Fixed WordPress Multisite in sub-directory mode and minify paths
  • Fixed caching posts page when using static home page
  • Fixed object cache not being initialised before getting options
  • Fixed locating document root for minify in certain environments
  • Fixed saving settings if permalinks are turned off
  • Fixed "Install" page displaying rules that is not required
  • Fixed minify cache being empty while page is cached so no minified files are generated, minified files auto generation no longer depend on pages not being cached
  • Fixed unnecessary flushing with SSL, user agents and referrer not being activated
  • Fixed "Purge from Page Cache" not purging varnish or CDN when enabled
  • Fixed CSS minification and relative paths in external files
  • Fixed login / logout and compability with BuddyPress
  • Fixed flushing same posts many times if status is trashed or restored
  • Fixed handling of .html fancy permalinks with nginx
  • Fixed handling of missing xcache opcode cache
  • Fixed Amazon S3 allowing LIST permissions to everyone
  • Fixed handling of .xml mime type
  • Fixed numerous object cache compatibility issues
  • Fixed memcached port support issue
  • Fixed HTTP_HOST not defined warning issue
  • Fixed xdebug not configured halt issue
  • Fixed minified files not being mirrored by push CDNs
  • Fixed uploading to CDNs multiple times even if force overwrite is disabled
  • Improved CloudFlare support: purging, dev mode, minification options, automatic IP range updates, rocket loader feature, security levels
  • Improved support for the Bad Behavior plugin
  • Improved object cache and MultiSite compability
  • Improved flushing behavior with better post and pages detection. To change behavior hook into filter 'w3tc_flushable_post'
  • Improved XML user interface when using Page Cache Disc: Enhanced
  • Improved minify filename path generation
  • Improved minify custom placement usage
  • Improved PHP 5 compability by removing deprecated functionality
  • Improved WP 3.4 and 3.5 compability by removing deprecated functions usage
  • Improved plugin by removing unnecessary ob_starts
  • Improved minify usage by returning old minify files while generating new
  • Improved update procedure by removing need to manually deactivate and reactivate plugin
  • Improved CDN paths and URL generation using both single and multisite installs
  • Improved Admin Bar menu with more flushing actions
  • Improved minify auto by adding support for downloading and combining external files
  • Improved descriptions for various "Do not cache ..." textareas
  • Improved header settings so plugin header settings override WordPress default header where appropriate
  • Improved debug logging by adding a debug folder constant: W3TC_DEBUG_DIR
  • Improved support for WPTouch plugin
  • Improved custom post type support and flushing
  • Improved cache key format and handling
  • Improved minify support on Windows
  • Improved purging functionality for CDN providers
  • Improved compatibility wp-fb-autoconnect plugin
  • Improved support of WordPress installed when in a sub-directory
  • Improved support of non-default WordPress folder setups
  • Improved use of HTTP API and FileSystem API in WordPress. HTTP API usage improves minify and CDN functionality. FileSystem API integration improves activation, deactivation and configuration changes
  • Improved execution time across all caching engines
  • Improved cache miss performance for page caching
  • Improved notification handling
  • Improved cache priming algorithm
  • Improved minify error reporting
  • Improved varnish purging capability
  • Improved memory caching logic and purging speed
  • Improved support for auto minify in more hosting environments
  • Improved support for use of sockets in memcached
  • Improved handling of old settings upon update
  • Improved detection of document root on additional hosting providers
  • Improved handling of eTags
  • Improved browser cache policy options
  • Improved bug submission form implementation
  • Improved NetDNA / MaxCDN support by using their new API
  • Disabled minify if CloudFlare is active
  • Removed PHP 4 support
  • Removed cookie used for user agent groups unless the feature is used
  • Removed cookie used for referrer unless the feature is used
  • Removed duplicate inclusion of JSON library
0.9.2.5 2013-01-13
  • Fixed security issue that can occur if using database caching to disk. If using database caching to disk with a web server with directory listing or web accessible wp-content/w3tc/dbcache/* directories. This patch works for all hosting environments / types where PHP is properly configured, i.e. .htaccess modifications (or other web server configuration changes) are not necessary to ensure proper security. Empty the database cache after performing the update if you use database caching to disk.
0.9.2.4 2012-12-28
  • Added support for Microsoft SQL Server
  • Added API support for MediaTemple ProCDN (EdgeCast)
  • Added set_time_limit to self test
  • Fixed LiteSpeed web server support
  • Fixed native hostname 301 redirect
  • Fixed redundant object origin push export
  • Fixed WSOD (white screen of death) caused by minify in some hosting configurations
  • Fixed text encoding in feeds
  • Fixed incorrect mime-type in feeds (which caused feedburner anomalies)
  • Fixed array to string notices
  • Fixed expires header support for AWS
  • Fixed minification of font-family
  • Fixed object cache write issue in WP Admin
  • Improved (reduced) memory utilization by up to 70%
  • Improved disk enhanced page caching performance
  • Improved object caching performance
  • Improved activation reliability
  • Improved reliability of minify auto mode
  • Improved security (added nonces, no directory indexing, prevent direct file access)
  • Improved compatibility with network based file systems
0.9.2.3 2011-06-22
  • Added additional CloudFlare IP range
  • Fixed bug in html tidy encoding
  • Fixed bug with NetDNA / MaxCDN purging
  • Improved handling of markers in .htaccess files - easier upgrades
  • Improved cache busting logic
  • Improved numerous notifications and user interface behaviors
  • Improved AWS S3 and Cloudfront reliability
  • Improved reliability of minify auto mode
0.9.2.2 2011-06-21
  • Fixed bug with minify directives, e.g.: "File param is missing," causing minify caching to fail
  • Fixed bug with document root detection for IIS server
  • Fixed bug with HTTP compression when using CloudFlare
  • Fixed bug with HTML validation with JavaScript embed tags
  • Fixed bug with fancy permalinks, sites with or without trailing slashes can now cache pages using disk enhanced
  • Fixed bug with appending WP_CACHE define into wp-config.php for some users
  • Fixed bug with path to JSON.php
  • Fixed bug with listing of buckets error with AWS S3
  • Improved compatibility with WordPress SEO by Yoast, 404 error exception list sitemap value changed to: sitemap(_index|[0-9]+)?.xml(.gz)?
0.9.2.1 2011-05-10
  • Fixed bug with existing installation upgrades: set minify to manual mode by default
  • Fixed bug with unsuccessful transfer queue button
  • Fixed bug with background in lightbox
  • Fixed bug with handling of local http requests being blocked on some hosts
  • Disabled CDN for minify files when auto mode is selected and the CDN method is origin push
0.9.2 2011-05-10
  • Added support for nginx web server
  • Added support for CloudFlare
  • Added origin pull support for Amazon Cloudfront
  • Added Microsoft Azure Storage support for CDN
  • Added WinCache opcode cache support
  • Added additional minifier engines for HTML, CSS and JS including: HTMLtidy, CSStidy, Closure Compiler, YUI Compressor
  • Added Google Page Speed integration
  • Added support for @import processing
  • Added controls for page cache purging policy
  • Added auto mode for minify (not compatible with CDN)
  • Added support for set cookie domain setting
  • Added reliability improvements for Amazon Web Services
  • Added referrer group management for uniquely caching these cases
  • Added Amazon S3 bucket location selection control
  • Added support CNAMEs confguration support for Amazon Cloudfront
  • Added purge tool
  • Added support of custom wp-config.php location
  • Added cache busting support
  • Improved object caching performance when no plugins are active
  • Improved non-blocking JS embedding implementation
  • Improved reliability of CDN export operations
  • Improved implementation of headers for all cache engines
  • Improved minify help (recommendations) tool
  • Improved handling of .htaccess directive changes
  • Improved support of IIS web server
  • Improved varnish support
  • Fixed bugs with API changes with Rackspace Cloudfiles
  • Fixed bugs with origin push content delivery network methods
  • Fixed bug with HTML encoding
  • Fixed bug with emptying cache for various cache keys
  • Fixed bug with rejected CDN file support
  • Fixed bug with HTTPS mode in WP Admin
  • Fixed bug with relative document root for disk enhanced page cache
  • Fixed bug with trailing slash for disk enhanced page cache
  • Fixed bug with minify template group settings being lost upon upgrade
  • Fixed division by zero error
  • Fixed bug with object cache clones
  • Moved browser cache rules to site root instead of document root
0.9.1.3 2010-12-02
  • Improved error messages with AWS S3 CDN
  • Added SSL support for CDN
  • Added control for CDN queue upload interval
  • Added option for 404 file exceptions list in browser cache
  • Added exception for NextGen Gallery flash image rotator to CDN settings
  • Fixed bug with external file imports
  • Fixed bug with document root detection for CDN
  • Fixed bug with minify file search
  • Fixed bugs with AWS CloudFront distribution creation and saving
  • Fixed bug with Rackspace Cloud Files API
0.9.1.2 2010-09-16
  • Improved media library import compatibility
  • Improved various notifications
  • Changed expires implementation to last accessed instead of last modified
  • Resolved Apache 1.3 compatibility issue
  • Fixed issues with document root detection on some servers
  • Fixed an issue with minification of script tags with HTML comments inside
  • Fixed bug with minify gzip compression
  • Fixed bug with cache-control headers
  • Fixed bug with empty fatal error notification on network activation
  • Fixed bug with minify when https is active
  • Fixed bug with fatal error upon activation when uploads path does not exist
0.9.1.1 2010-07-25
  • Added an additional notification to help users identify incomplete installations upon activation
  • Reverted previous Cloud Files workaround
  • Fixed a bug with preview mode buttons
  • Fixed a bug with duplicate entries appearing when using minify help tool more than once
  • Fixed a bug with browser cache rules generation for media files
0.9.1 2010-07-23
  • Improved Rackspace Cloud Files implementation
  • Improved frequently asked questions implementation to support incomplete PHP distributions
  • Fixed 500 Internal Server Error when upgrading with Disk enhanced mode enabled
  • Fixed notification issues with preview mode
  • Fixed an issue with fatal errors with minify and memcache(d) caching engine
0.9.0 2010-07-22
  • Added preview feature so all cache settings can be reviewed prior to deployment
  • Added minify configuration wizard (help button on minify tab)
  • Added "never cache the following pages" to database and object cache
  • Added minify option to JavaScript embed after <body>
  • Added minify error notifications
  • Added drag and drop dependency resolution for minify CSS / JavaScript groups
  • Added object caching
  • Added option to automatically page cache prime (preload) with or without XML sitemap
  • Added support for multiple CNAMEs to CDN
  • Added support for minifcation of any respective theme installed a single site
  • Added support for page caching of multiple themes for various user agent groups
  • Added support for theme switching / redirection based on groups of user agents
  • Added compatibility with WP Super Cache fragment caching method (disk basic mode only)
  • Added HTTP compression and headers for AWS S3
  • Added ignored comment stems field, with Google AdSense default value to HTML minify
  • Added support for varnish purging
  • Added Rackspace CloudFiles support
  • Added native NetDNA / MaxCDN integration
  • Added option to cache 404 pages
  • Added changed files auto-upload to CDN
  • Added option to handle 404 errors for static objects directly with the web server
  • Added support for gravity forms to database cache default settings
  • Added changed file auto-upload to CDN
  • Database connection errors now return internal server (500) error response and are thus not cached
  • Incomplete plugin installation / removal no longer generates public errors
  • Unterminated string errors no longer display publicly
  • Support tab improvements
  • Install tab improvements
  • Resolved conflicts with disk enhanced .htaccess directives insertion
  • Improved compatibility with all mobile plugins
  • Improved AWS reliability
  • Improved browser caching support and management
  • Improved directory management for disk caching methods for increased performance
  • Improved handling of missing minify files
  • Improved Media Library import
  • Improved Multi Site support
  • Improved SSL interoperability
0.8.5.2 2010-03-30
  • Added support for Bad Behavior plugin
  • Added support for eAccelerator and XCache opcode caches
  • Added support for rewriting href attribute of anchors for images that use the CDN
  • Added deflate http compression support to minify
  • Added setting of file modification time after FTP upload
  • Added check of file modification time and file size before FTP upload
  • Added check of file hash before uploading to Amazon S3
  • Added option to force replacement of uploaded attachments on CDN
  • Added option to toggle feed minification
  • Added combine only option for CSS minification to overcome invalid CSS files
  • Database caching now disabled by default to improve compatibility with some shared hosting environments
  • Default page caching method now disk enhanced
  • Improved HTTP Compression inter-operability
  • Improved compatibility with Multi Site Manager
  • Improved apache compatibility
  • Improved .htaccess directives
  • Improved header management for posts / pages
  • Improved notifications
  • Improved minify handling of external files
  • Improved minify memory limit to avoid blank pages when document size is large
  • Improved minify reliability by reducing comment removal options
  • Improved Media Library Import versatility
  • Improved reliability of plugin activation in WordPress MU
  • Improved security handling for some operations
  • Improved reliability of handling file names containing spaces in CDN functionality
  • Improved non-blocking embedding reliability
  • Improved memcached detection by supporting only PECL memcache
  • Fixed bug with disk enhanced method of page cache in WordPress MU
  • Fixed false match of page cache files in disk enhanced method of page cache
  • Fixed a bug with cron anomalies caused by caching of wp_options table
  • Fixed missing trailing slash issue when using disk enhanced page caching
  • Fixed auto-embed bug CSS and JS when already manually embedded
0.8.5.1 2010-01-25
  • Added option to CDN Settings to skip specified directories
  • Added option to allow for full control of HTTP compression options for page cache (some WordPress installations have issues with deflate)
  • Added sql_calc_found_rows to default auto reject SQL list
  • Added more notification cases identified and configured
  • Added new mobile user agents for Japanese market
  • Page cache performance improvements for disk enhanced mode
  • Improved FAQ and option descriptions
  • Improved apache directives for minify headers
  • Improved handling of redirects
  • Improved name space to avoid issues with other plugins
  • Improved handling of incomplete installations, caching runs with default options if custom settings file does not exist
  • Fixed anomalies with memcached-client.php in some environments
  • Fixed another interface bug with management of minify files
  • Fixed minor bug with table column length for some MySQL versions
  • Fixed minify bug with CRLF
  • Fixed minify bug with handling of zlib compression enabled
  • Fixed handling of pages with CDN Media Library import
0.8.5 2009-12-18
  • Added "enhanced" disk caching mode for page cache, a 160% performance improvement over basic mode
  • Added disk caching as an option for Database Cache
  • Added CDN support for Amazon S3 and CloudFront
  • Added mobile user agent rejection and redirect fields to page cache for handling mobile user agents
  • Added Submit Bug Report tab
  • Added support for detection of custom templates for minify groups
  • Added separate controls expiration time field for minify and page cache settings
  • Added PHP4 Support Notification to handle fatal errors on activation
  • Improved database caching by 45%
  • Improved handling of cache-control HTML headers
  • Improved handing of 3rd Party CSS file minification
  • Improved media library import reliability
  • Improved handling of DOCUMENT_ROOT on some servers
  • Improved garbage collection routine
  • Improved handling of <pre> and <textarea> minification
  • Improved handling of regular expressions in custom file list in CDN settings
  • Improved handling of media library attachments in RSS feeds
  • Improved handing of subdomains for CDN settings
  • Improved various notifications and error messages
  • Improved optional .htaccess directives (located in /ini/_htaccess)
  • Fixed bug with JS minifcation saving group settings
  • Fixed bug with false positives for duplicate CSS or JS in minify settings
  • Fixed bug causing settings to be lost on upgrade
  • Fixed bug with attachment URI when CDN mode enabled
  • Fixed small bug with FTP upload when CDN Method is Mirror (Origin Pull)
  • Fixed bug with the URI for wlwmanfiest.xml when CDN enabled
  • Fixed bug with handling of HTTPS objects according to options
  • Fixed bug with emptying disk cache under various obscure permutations
  • Fixed bug with handling of obscure open_basedir restrictions
  • Fixed various bugs with emptying cache under various obscure permutations
  • Fixed bug with installations deeper than document root
0.8 2009-10-18
  • Added disk as method for page caching
  • Added support for mirror (origin pull) content delivery networks
  • Added options to specify minify group policies per template
  • Added options for toggling inline CSS and JS minification to improve minify reliability
  • Added option to update Media Library attachment hostnames (when migrating domains etc)
  • Added "Empty Cache" buttons to respective tabs
  • Added additional file download fallback methods for minify
  • Improved cookie handling
  • Improved header handling
  • Improved reliability of Media Library import
  • "Don't cache pages for logged in users" is now the default page cache setting
  • Fixed minify bug with RSS feeds
  • Fixed minify bug with rewriting of url() URI in CSS
  • Addressed more page cache invalidity cases
  • Addressed rare occurrence of PHP fatal errors when saving post or comments
  • Addressed CSS bug on wp-login.php
  • Addressed rare MySQL error when uploading attachments to Media Library
  • Modified plugin file/directory structure
  • Confirmed compatibility with varnish and squid
0.7.5.2 2009-09-11
  • Minified files now (optionally) upload automatically according to update interval (expiry time)
  • Provided memcache.ini directives updated to improve network throughput
  • Addressed WordPress MU site-wide activation/deactivation issues
  • Added empty (memcached) cache button to each tab
  • Fixed bug with parsing memcached server strings
  • Added warning dialog to minify tab about removal of query strings locally hosted object URIs
  • Fixed bug with minify sometimes not creating files as it should
  • Changed directory of minify working files to wp-content/w3tc-cache/
  • Improved reliability of memcache flush
0.7.5.1 2009-09-10
  • Resolved a bug in the minify library preventing proper permission notification messages
  • Improved notification handling
  • Fixed bug with database cache that caused comment counts to become out of date
  • Added memcached test button for convenience
  • Fixed minor issue with URI with CDN functionality enabled
  • Removed unnecessary minify options
  • Improved reliability of Media Library Export
  • Minification error now dialogs disabled when JS or CSS minify settings disabled
  • Normalized line endings with /n as per minify author's direction
  • Added option to concatenate any script to header or footer with non-blocking options for scripts that cannot be minified (e.g. obfuscated scripts)
  • Improved compatibility with suPHP
  • Added options to concatenate JS files only in header or footer (for use with obfuscated scripts)
0.7.5 2009-08-27
  • Fixed issue with auto-download/upgrade and additional error checking
  • Improved handling of inline comments and JavaScript in HTML documents
  • Conditional CSS embeds are now minified leaving the conditional untouched
  • Memcached engine logic modified to better support clustering and multiple memcached instances
  • Added handling for magic_quotes set to on
  • Addressed privilege control issue
  • Resolved warnings thrown in various versions of WordPress
  • Fixed a bug preventing minify working properly if either CSS or JS minification was disabled
  • Improved handing of @import CSS embedding
  • Eliminated false negatives in a number of gzip/deflate compression analysis tools
  • Total plugin file size reduced
0.7 2009-08-23
  • WordPress MU support bug fixes
  • Minor CDN uploader fixes
  • Added minify support for URIs starting with /
  • Minor error message improvements
0.6 2009-08-20
  • Improved error message notifications
  • FAQ and installation instructions corrections/adjustments
  • Added "Debug Mode" listing all settings and queries with statistics
  • Resolved bug in minification of feeds
  • Support for multiple wordpress installations added
  • Improved cache stability for large objects
0.5 2009-08-04