Knowledge base
Answers to: Is Zinn® Cache really free? Do I need Zinn® Cache Pro? Does it work without LiteSpeed? Is it safe for WooCommerce? Does it conflict with LiteSpeed Cache? Is Zinn® Cache on WordPress.org? What data do the plugins send? Where do I get an older version? Which languages are the settings screens in?
Yes. Zinn® Cache is free to download and use, licensed under the GPL, with no licence key. Zinn® Cache Pro is an optional paid add-on; nothing in the free plugin is switched off to sell it.
No. The free plugin is a complete cache. Add Pro when you want to see what the cache is doing, find slow queries, speed up the object cache or optimise images, CSS and JavaScript. Pro needs the free plugin installed.
Yes. On LiteSpeed or OpenLiteSpeed it uses the server's own page cache. When nginx, Varnish or Apache already caches your pages it purges them there instead of adding a second cache, and on any other server it keeps each page as a file and serves it before WordPress loads. The Redis object cache works on any server with the phpredis extension.
Yes. Cart, checkout and account pages, add-to-cart requests and shoppers carrying a basket or session cookie are never served a cached page, for WooCommerce and Easy Digital Downloads alike.
Zinn® Cache leaves page caching to LiteSpeed Cache if that plugin is active, and routes its purges through it. Use one page cache at a time.
Yes. Zinn® Cache is listed in the WordPress.org plugin directory, so you can install it from Plugins → Add New in your WordPress dashboard. Zinn® Cache Pro is sold through Freemius, not the directory.
The free plugin sends nothing unless you opt in to Freemius or choose to send a support report, which you see in full first. Pro checks its licence and updates with Freemius. On our hosting, Zinn® Cache reports plugin and theme changes to your dashboard, and never visitor data or post content.
Signed-in customers can download every published version of the free plugin from the Older versions tab on the Plugins page in the Zinn Digital® app. Zinn® Cache Pro versions come from your Freemius account.
Both plugins bundle translations for 57 languages, including right-to-left languages. WordPress can load 53 of them today; a community translation, where one exists, takes priority.
Customers hosting with us get support from Zinn Digital®, and so does anyone with a Zinn® Cache Pro licence. Anyone can report a problem, and security issues go to security@zinndigital.com.
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