Fixes WebP images (Caching Out Pro) being missed for most visitors when a\npage was first cached by Chrome, Edge or Firefox, and stops caching every\npage twice by browser type when no image variant is served. The page cache\nis emptied once on update. Update Caching Out Pro to 1.23.0 for AVIF.<\/p>","1.22.0":"
The settings screens have a new look (Bootstrap is gone; about 440 KB less\nper plugin screen). No setting changes. If you use Caching Out Pro, update\nit to 1.22.0 as well: Pro 1.22.0 needs Caching Out 1.22.0 and loads nothing\nuntil both are updated.<\/p>","1.21.17":"
Visitors arriving from social and ad links (fbclid, gclid, utm_ and the\nlike) are now served from the page cache. If you had added those names to\nIgnored query parameters yourself, your list is kept; Restore default\nparameters on the Cache tab adds the rest. Update Caching Out Pro to\n1.21.17 too.<\/p>","1.21.13":"
Brings the code in line with the WordPress.org plugin guidelines. No setting\nchanges. If you use Caching Out Pro, update it to 1.21.13 as well: two of its\ndatabase operations moved out of this plugin into Pro.<\/p>","1.21.9":"
Fixes an error when saving a WooCommerce product, and keeps file optimization\noff the WooCommerce cart, checkout and account pages. A snippet you added to\ndo that can be removed. With Caching Out Pro, upgrade this plugin first.<\/p>","1.21.8":"
The Database tab now unlocks each Run button only after you have previewed\nthat row. If you use Caching Out Pro, upgrade this plugin first: Pro 1.21.8\nrequires it.<\/p>","1.21.7":"
Fixes automatic image dimensions resizing images your theme scales with CSS,\nsuch as a logo in a header bar, and makes the LazyLoad exclusions cover those\nattributes too. If you switched Add Missing Width\/Height off to work around\nthis, you can safely switch it back on.<\/p>","1.21.0":"
Caching Out is now a free plugin on WordPress.org, with the features listed\nabove switched on as they were. Every setting keeps its value and nothing is\nswitched on or off by the upgrade.<\/p>"},"ratings":[],"assets_icons":{"icon-128x128.png":{"filename":"icon-128x128.png","revision":3758710,"resolution":"128x128","location":"assets","locale":"","width":128,"height":128},"icon-256x256.png":{"filename":"icon-256x256.png","revision":3758710,"resolution":"256x256","location":"assets","locale":"","width":256,"height":256}},"assets_banners":{"banner-1544x500.png":{"filename":"banner-1544x500.png","revision":3758710,"resolution":"1544x500","location":"assets","locale":"","width":1544,"height":500},"banner-772x250.png":{"filename":"banner-772x250.png","revision":3758710,"resolution":"772x250","location":"assets","locale":"","width":772,"height":250}},"assets_blueprints":{},"all_blocks":[],"tagged_versions":["1.21.17","1.22.0","1.23.0"],"block_files":[],"assets_screenshots":{"screenshot-1.png":{"filename":"screenshot-1.png","revision":3762959,"resolution":"1","location":"assets","locale":"","width":1280,"height":800},"screenshot-2.png":{"filename":"screenshot-2.png","revision":3762959,"resolution":"2","location":"assets","locale":"","width":1280,"height":800},"screenshot-3.png":{"filename":"screenshot-3.png","revision":3762959,"resolution":"3","location":"assets","locale":"","width":1280,"height":800},"screenshot-4.png":{"filename":"screenshot-4.png","revision":3762959,"resolution":"4","location":"assets","locale":"","width":1280,"height":800},"screenshot-5.png":{"filename":"screenshot-5.png","revision":3762959,"resolution":"5","location":"assets","locale":"","width":1280,"height":800}},"screenshots":{"1":"The Cache tab: page caching on, a lifespan in hours, an optional separate mobile cache and the filesystem check.","2":"The Database tab: every cleanup shows how many rows it will remove before Run unlocks.","3":"Insights with the Page Audit, which reads your pages and names what to fix without an API key.","4":"The Filesystem Check: every file the plugin needs, what passed, what failed, and the fix.","5":"The Setup Wizard."}},"plugin_section":[],"plugin_tags":[146,1466,1736,3853,247],"plugin_category":[52,54],"plugin_contributors":[287856],"plugin_business_model":[],"class_list":["post-388351","plugin","type-plugin","status-publish","hentry","plugin_tags-cache","plugin_tags-lazyload","plugin_tags-minify","plugin_tags-page-cache","plugin_tags-performance","plugin_category-performance","plugin_category-security-and-spam-protection","plugin_contributors-cachingout","plugin_committers-cachingout"],"banners":{"banner":"https:\/\/ps.w.org\/cachingout\/assets\/banner-772x250.png?rev=3758710","banner_2x":"https:\/\/ps.w.org\/cachingout\/assets\/banner-1544x500.png?rev=3758710","banner_rtl":false,"banner_2x_rtl":false},"icons":{"svg":false,"icon":"https:\/\/ps.w.org\/cachingout\/assets\/icon-128x128.png?rev=3758710","icon_2x":"https:\/\/ps.w.org\/cachingout\/assets\/icon-256x256.png?rev=3758710","generated":false},"screenshots":[{"src":"https:\/\/ps.w.org\/cachingout\/assets\/screenshot-1.png?rev=3762959","caption":"The Cache tab: page caching on, a lifespan in hours, an optional separate mobile cache and the filesystem check."},{"src":"https:\/\/ps.w.org\/cachingout\/assets\/screenshot-2.png?rev=3762959","caption":"The Database tab: every cleanup shows how many rows it will remove before Run unlocks."},{"src":"https:\/\/ps.w.org\/cachingout\/assets\/screenshot-3.png?rev=3762959","caption":"Insights with the Page Audit, which reads your pages and names what to fix without an API key."},{"src":"https:\/\/ps.w.org\/cachingout\/assets\/screenshot-4.png?rev=3762959","caption":"The Filesystem Check: every file the plugin needs, what passed, what failed, and the fix."},{"src":"https:\/\/ps.w.org\/cachingout\/assets\/screenshot-5.png?rev=3762959","caption":"The Setup Wizard."}],"raw_content":"\n
Caching Out keeps a ready-made copy of each page and serves it before\nWordPress loads, writes browser caching and compression rules into your server\nconfiguration, loads images, iframes and video as they are needed rather than\nall at once, and can minify your CSS and JavaScript. It rebuilds the copies\nwhen your content changes. It is designed to improve LCP, INP and CLS.<\/p>\n\n
Performance results vary depending on hosting, theme, plugins and traffic.<\/p>\n\n
Page caching needs one file, wp-content\/advanced-cache.php, and browser caching\nneeds a block of rules in your server configuration. Either of them may already\nbelong to another plugin.<\/p>\n\n
Caching Out records a fingerprint of the drop-in file it writes and compares it\nbefore every write, overwrite or delete. If the file on disk is not the one it\nwrote, it leaves that file alone, does not switch page caching on, and shows a\nnotice naming the plugin the file belongs to. The rest of the plugin keeps\nworking.<\/p>\n\n
The same rule covers your .htaccess. A marker block belonging to another plugin\nis never written into and never removed. Before Caching Out writes its own\nblock it checks the result, then replaces the file in one step; if the file\ncannot be written, nothing is written at all, so a half-written server\nconfiguration is never left behind, and no copy of your .htaccess or\nwp-config.php is ever left on disk. Deactivation never edits .htaccess or\nwp-config.php.<\/p>\n\n
Caching Out never reads, writes or removes object-cache.php.<\/p>\n\n
Anything that can change how a page looks is off until you switch it on:<\/p>\n\n
These rules are fixed. They have no settings, they cannot be switched off, and\nthey are the same in the free plugin and in Caching Out Pro:<\/p>\n\n
Both are included in full, and neither needs an API key.<\/p>\n\n
The Page Audit<\/strong> reads your tracked pages the way a visitor would - over a\nloopback request to your own site - and lists what it found. Where a plugin\nsetting answers the finding, there is a button that changes that setting. Where\nyour theme or your host has to change something, it says so in plain words.<\/p>\n\n The Filesystem Check<\/strong> verifies every file the plugin needs: the drop-in, the\nWP_CACHE constant, the cache directory, the settings snapshot the drop-in reads\nand the scheduled tasks. Each row says what state it is in and what to do about\nit.<\/p>\n\n The free plugin above is complete on its own and stays free. Caching Out Pro is\na separate add-on, installed alongside it, that adds:<\/p>\n\n The assistant is scoped to Caching Out and your site's configuration: 50\nquestions a day and 300 a month per licence. It is not a general-purpose\nchatbot; answers are AI-generated and can be wrong, so check anything\nconsequential against the linked source.<\/p>\n\n Every feature in every paid plan; the paid plans differ in the number of sites\nand the length of support, never in what the plugin does. In both editions,\nanything that can change how a page looks stays off until you switch it on.<\/p>\n\n Details: https:\/\/cachingout.com\/pricing\/<\/p>\n\n The free plugin does not need a licence, never contacts our servers, and makes\nno outbound request of its own.<\/p>\n\n The one exception is the Page Audit and the Filesystem Check, which fetch pages\nfrom your own site<\/strong> over a loopback request when you run them or when the\ntracked-page schedule runs. Nothing is sent anywhere else and nothing leaves\nyour server.<\/p>\n\n The free plugin sends no usage data. Telemetry belongs to Caching Out Pro,\nwhere it is opt-in with the box unticked, sends aggregate figures only - never\npage content and never personal data - and is disabled outright by\ndefine( 'CACHINGOUT_DISABLE_TELEMETRY', true );.<\/p>\n\n The free plugin sets no cookies of its own. It reads cookie names on the\nrequest, because it must - a visitor carrying a session, authentication or cart\ncookie is never served a cached page - but no cookie value is stored, logged or\nsent anywhere.<\/p>\n\n The admin screens use Bootstrap 5.3.8 (https:\/\/github.com\/twbs\/bootstrap) and\nBootstrap Icons 1.13.2 (https:\/\/github.com\/twbs\/icons), both under the MIT\nlicence, shipped as the unmodified minified files from their upstream\nreleases. The human-readable source is in those repositories at the matching\nversion tag. Minify CSS and Minify JavaScript use matthiasmullie\/minify\n(https:\/\/github.com\/matthiasmullie\/minify, MIT), shipped unminified in\nvendor\/. assets\/THIRD-PARTY-LICENSES.txt in the plugin folder names each\nbundled file, its version and its licence.<\/p>\n\n The plugin's own three front-end scripts (the lazy loading helpers) are printed\ninline from assets\/js\/*.min.js; their readable source is in assets\/js\/src\/.<\/p>\n\n\n No. The free plugin is a complete product. It never asks for a key and never\ncontacts our servers.<\/p><\/dd>\n Add No. Logged-in visitors always bypass the page cache; only anonymous visitors\nare served a cached page. This is a fixed rule with no setting, so private\ncontent is never served to the wrong person.<\/p><\/dd>\n Caching Out checks whether it owns Yes. Cart, checkout and account pages are excluded on activation with no\nconfiguration, and any visitor carrying a cart or session cookie bypasses the\ncache entirely. The equivalent Easy Digital Downloads pages are excluded the\nsame way.<\/p><\/dd>\n Not on activation. Page caching, browser caching, compression and lazy loading\ndo not change your markup's appearance. Everything that can - minification,\ndeferring JavaScript, lazy loading of CSS background images - is off until you\nswitch it on.<\/p><\/dd>\n Page caching does, unchanged. The browser caching and compression rules are\nwritten into Deleting the plugin removes its options, its scheduled tasks, its cache\ndirectory, the drop-in, the This plugin is free, permanent and complete on its own. Pro is a separate\nadd-on you install alongside it, listed in the description above. Removing Pro\nleaves this plugin running exactly as before.<\/p><\/dd>\n Community support for the free plugin is in the WordPress.org support forum for\nthis plugin.<\/p><\/dd>\n\n<\/dl>\n\n\nCaching Out Pro<\/h4>\n\n
\n
Privacy<\/h4>\n\n
Third-party libraries<\/h4>\n\n
\n
\/wp-content\/plugins\/cachingout<\/code>, or install it from\nthe Plugins screen in WordPress.<\/li>\n\n
Do I need a licence key?<\/h3><\/dt>\n
How do I disable caching quickly?<\/h3><\/dt>\n
define( 'CACHINGOUT_DISABLE_CACHE', true );<\/code> to wp-config.php<\/code>. This\ndisables all cache reading and writing in every version, and it is the\ndocumented way out of a bad release.<\/p><\/dd>\nAre logged-in users served cached pages?<\/h3><\/dt>\n
What happens if another caching plugin is already installed?<\/h3><\/dt>\n
wp-content\/advanced-cache.php<\/code> before it\nwrites anything. If another plugin owns it, page caching stays off, the file is\nleft exactly as it is, and a notice names the plugin the file belongs to. The\nsame applies to a marker block in .htaccess<\/code>. Every other part of the plugin\nkeeps working.<\/p><\/dd>\nDoes it work with WooCommerce?<\/h3><\/dt>\n
Will it change how my site looks?<\/h3><\/dt>\n
Does it work on NGINX?<\/h3><\/dt>\n
.htaccess<\/code>, which is Apache and LiteSpeed only; on NGINX the\ndocumentation carries the equivalent snippet to paste into your server\nconfiguration by hand.<\/p><\/dd>\nWhat happens when I delete it?<\/h3><\/dt>\n
WP_CACHE<\/code> constant and its .htaccess<\/code> block.\nThere is no separate clean-up step to run first. Deactivating removes the\ndrop-in and the scheduled tasks only; it never edits .htaccess<\/code> or\n wp-config.php. If another page-cache plugin is active, save its settings\nonce after deleting Caching Out so it adds WP_CACHE<\/code> back. Step by step,\nincluding what to check by hand: https:\/\/cachingout.com\/docs\/getting-started\/<\/p><\/dd>\nWhat is the difference between this plugin and Caching Out Pro?<\/h3><\/dt>\n
Where do I get support?<\/h3><\/dt>\n
1.23.0<\/h4>\n\n
\n
1.22.0<\/h4>\n\n
\n
1.21.17<\/h4>\n\n
\n
1.21.16<\/h4>\n\n
\n
cachingout_partner_code_disclosure<\/code> filter and is\ntranslatable. The drop-in locates the plugin only from the directory\nrecorded at activation (or WP_PLUGIN_DIR when wp-config.php defines\nit); it no longer guesses wp-content\/plugins\/cachingout.<\/li>\n1.21.15<\/h4>\n\n
\n
1.21.14<\/h4>\n\n
\n
1.21.13<\/h4>\n\n
\n
1.21.12<\/h4>\n\n
\n
1.21.11<\/h4>\n\n
\n
1.21.10<\/h4>\n\n
\n
1.21.9<\/h4>\n\n
\n
cachingout_skip_optimization<\/code> filter. Return a\nshort reason to keep file optimization off a request; return an empty\nstring to leave it on.<\/li>\n1.21.8<\/h4>\n\n
\n
1.21.7<\/h4>\n\n
\n
1.21.6<\/h4>\n\n
\n
1.21.5<\/h4>\n\n
\n
1.21.4<\/h4>\n\n
\n
1.21.3<\/h4>\n\n
\n
1.21.2<\/h4>\n\n
\n
1.21.1<\/h4>\n\n
\n
1.21.0<\/h4>\n\n
\n
Earlier versions<\/h4>\n\n
\n