007AJ

007AJ Performance and Caching

Safe, Reversible Page Caching and Speed Tools

Serve pages from a fast disk cache, run a setup check first, and switch everything off with one click if anything looks wrong. Every file change is backed up before it is made, and the speed options stay off until you turn them on.

Disk page cache

Visitors are given a saved copy of each page, served by a small file that runs before WordPress loads, with a compressed copy kept alongside it. The cache lifetime is yours to set.

A setup check before anything changes

Before the page cache is switched on, a checklist covers your PHP and WordPress versions, multisite, permalinks, folders, the advanced-cache.php file, wp-config.php, other cache plugins, your host and .htaccess. If a check is blocking, nothing is changed.

Host detection

Recognises WP Engine, Kinsta, Pantheon, Flywheel, GoDaddy Managed WordPress, WordPress.com, Bluehost, SiteGround, Cloudways and Hostinger. If your host already runs its own page cache, page caching stays off unless you confirm that you want it. Cloudflare, Varnish and LiteSpeed are noted for information.

Conflict detection

Checks for other cache and speed plugins and for another plugin’s advanced-cache.php file. A file that belongs to something else is never replaced.

A backup before every file change

Before wp-config.php or .htaccess is edited, a copy is saved in a closed folder. The newest five copies of each are kept, and changes sit between clear markers so they are easy to find.

One-click Safe mode

One button switches every optimization off and undoes the file changes: the advanced-cache.php file, the wp-config.php line and the .htaccess rules. Cached pages are cleared and your settings are kept. If you cannot reach wp-admin, an empty file named ajpc-safe-mode.flag in wp-content does the same.

Rolled back if something fails

If switching the page cache on fails part-way, the changes made so far are undone. Disabling the page cache from the dashboard undoes its file changes too, and “Undo last change” returns your optimization settings to how they were before.

Sensible things are never cached

Logged-in visitors, form posts, pages with query strings, REST requests, admin and AJAX requests, feeds, search, 404 and preview pages, password-protected posts and shop cart and checkout pages are always served fresh. Common tracking parameters in a link do not stop a page from being cached.

Automatic cache clearing

Cached pages are cleared when you publish, update, trash or delete content, when comments change, when terms, widgets, options or profiles change, and when shop stock changes.

Control what is cached

Exclude pages by address (wildcards work), by cookie or by browser. Choose how long copies last and, if you like, keep a separate cache for mobile visitors.

Purge from the admin bar

A “Cache” menu in the admin bar offers “Purge all cached pages” and “Purge this page”. The dashboard adds a self-check that asks your own site for its home page twice and reports whether the second answer came from the cache.

A visible status header

Responses can carry an X-AJPC-Cache header showing HIT, MISS or BYPASS and the reason. It is on by default and you can turn it off.

Cache preload

Warm the cache from your sitemap and navigation menus, one to thirty pages a minute. Requests go only to your own site, and the run waits while the server is busy. Off until you start it.

Browser caching and compression rules

On Apache and LiteSpeed, the plugin can add browser-caching and GZIP rules to .htaccess, with a backup first. On other servers a ready-made snippet is shown for you to copy.

Optimize options

Minify CSS, JavaScript and HTML, defer JavaScript, lazy-load images and iframes, remove version numbers from file links, and remove the emoji script and embed scripts. Every option starts off. Safe and Balanced presets, a “Turn all optimizations off” button and Undo are included.

Advanced speed options

Combine CSS and JavaScript, delay scripts until a visitor interacts or a timeout passes, reduce unused CSS, create critical CSS for each page type with a manual override, add preload, prefetch and preconnect hints, set font-display, and optionally host Google Fonts locally.

Image optimization

Compress JPEG and PNG images on your own server, keeping the originals so you can restore them. Create WebP and AVIF copies where the server supports them, run a bulk job with progress, pause and resume, and optimise from the Media Library. Nothing is sent to an outside service.

Database clean-up

Count first, then delete only what you tick: revisions, auto-drafts, trashed posts and comments, spam, expired transients and orphaned post and comment meta. Optionally run it daily or weekly. Deleted rows cannot be brought back, so make a backup first.

Extras

Control the Heartbeat, turn off XML-RPC pingbacks, remove the shortlink, RSD and generator tags, limit post revisions and show a dashboard widget.

CDN and cache purge

Rewrite file addresses to your CDN host. Optionally clear Cloudflare with your own API token, and clear the host cache on Kinsta, WP Engine, SiteGround, Cloudways and LiteSpeed, or send a generic HTTP PURGE request.

Object cache and Web Vitals

Optionally add a Redis or Memcached object-cache file for servers that have them. A first-party Web Vitals sampler is off by default and stores counts only.

Fully licensed version

Fully licensed version — use on your own sites. You get the complete plugin, with every feature described on this page.