Free WordPress Cache Plugin That’s Safe and Easy to Undo
Safe Speed Cache is a free WordPress cache plugin that stores a finished copy of your pages and serves it to visitors without running WordPress, which makes repeat visits much faster. It’s built around one rule: a caching plugin must never break your site, and it must be easy to get out of.
Optimisations are off until you choose them, and each one can be undone with one click.
Why safe caching matters
Caching plugins that change too much at once can break layouts, checkouts or logins. Safe Speed Cache skips pages that should never be cached, shows you exactly what happened to each page, and sends the original page if any step fails.
Who Safe Speed Cache is for
- Blogs and brochure sites that want faster repeat visits
- WooCommerce shops that need carts and checkout left alone
- Site owners who have been burned by aggressive cache plugins
What’s included in the free version
- Disk page cache with a cache lifetime you set.
- Smart skipping: logged-in users, commenters, carts and checkout (WooCommerce too), POST requests, query strings, the REST API, wp-admin and feeds.
- Optional mobile cache for phones and tablets.
- Automatic purge when content, comments, menus, widgets, themes, plugins or key settings change.
- Purge buttons in the admin bar for the whole site or one page.
- Status header showing HIT, MISS or BYPASS with the reason.
- Browser caching and compression rules for Apache and LiteSpeed, plus a snippet for nginx.
- Optimise presets: Safe (minify, remove emoji scripts) and Balanced (adds deferred JavaScript and lazy loading).
- Exclusions by page address, script or stylesheet name and images.
- Setup check and Diagnostics page.
Tips for getting the most from Safe Speed Cache
Run the setup check first and fix anything it flags before you turn on the cache. Start with the page cache alone and confirm pages show a HIT header. Then try the Safe preset and test your key pages, including forms and checkout. Only move to Balanced if everything still works, and add exclusions for any script that breaks. If you ever see a problem, Safe mode undoes everything in one click.
How to install Safe Speed Cache
- Enter your email below to get the download link.
- In WordPress, go to Plugins → Add New → Upload Plugin and upload the zip.
- Activate Safe Speed Cache.
- Run the setup check, turn on the page cache, and add an optimise preset only if you want one.
Download Safe Speed Cache free
It’s free, with no site account needed. Just enter your email and your download is ready right away.
Get the free plugin
Enter your email and your download link appears instantly.
Upgrade to Pro: 007AJ Performance & Caching
The free plugin covers what most sites need. When you want more, 007AJ Performance & Caching adds:
- Cache preload
- Image optimisation with WebP and AVIF copies
- Database clean-up
- CDN and cache purge integration
- Object cache and Web Vitals tools
See 007AJ Performance & Caching
Frequently asked questions
Is Safe Speed Cache really free?
Yes. The page cache, automatic purging, presets and diagnostics are all included.
Can it break my site?
It’s designed not to. Nothing is optimised until you choose it, presets can be undone with one click, and if a step fails the original page is sent.
Does it work with WooCommerce?
Yes. Carts and checkout are never cached.
Does it edit my theme files?
No. Minified copies are written to a separate cache folder, and your theme and plugin files are never edited.
What do I need to run it?
WordPress 6.3 or newer and PHP 7.4 or newer.
Why do you ask for my email?
It’s how we deliver the free download without making you create an account. We may also send occasional news about this plugin and related tools, and you can unsubscribe at any time.
Can I use it on more than one site?
Yes. Safe Speed Cache is licensed under the GPL, so you can install it on as many of your own or your clients’ sites as you like.