Spark Speed vs LiteSpeed Cache

With LiteSpeed Cache a lot depends on what runs underneath the plugin. According to the plugin page on WordPress.org, the LiteSpeed exclusive features work with OpenLiteSpeed, commercial LiteSpeed products, LiteSpeed hosting or the QUIC.cloud CDN. The general features work on any web server. In practice that means: on Apache or nginx without QUIC.cloud you get the optimisations, but not the page cache itself. Spark Speed has a page cache of its own that works on Apache, LiteSpeed and nginx. The server is detected automatically. On Apache the cache can be served straight from disk without PHP; on other servers delivery goes through the PHP cache path. If you are already on LiteSpeed you do not have to choose: by default Spark Speed leaves its own page cache to LiteSpeed as soon as LSCWP is active, so nothing is cached twice.

Spark Speed detects LiteSpeed on its own. Without LiteSpeed Cache next to it you can switch on the optional native mode. Spark Speed then drives the LiteSpeed server cache directly with X-LiteSpeed-Cache-Control and tag headers, with the same exclusions as its own disk cache: pages with frozen queries, excluded URLs and cookies, 404s and warmer renders stay out of the cache. Native mode purges per URL and per tag. Without LSCWP, Spark Speed writes .htaccess rules so LiteSpeed never serves the shared page to visitors carrying a login or cart cookie.

LiteSpeed Cache has placed a large part of its heavier services with QUIC.cloud. According to the plugin page, some of those online services require payment at certain usage levels, and the current credits and limits are in your QUIC.cloud dashboard. Image optimisation and critical CSS belong to those services. Spark Speed goes the other way. Used CSS is determined locally, no page HTML goes to an external optimisation service, and first-party measuring of real visitors (RUM) is optional and sends nothing to third parties. Image conversion to WebP and AVIF is optional and happens locally with GD or Imagick; originals are not modified. So you do not pay for credits, but your own server does the work. Spark Speed is a paid plugin and can also be taken monthly.

As of October 2026, based on the LiteSpeed Cache plugin page and the own data of Spark Speed 0.72.0.

If you are on LiteSpeed hosting, LiteSpeed Cache gives you a cache that is integrated deeply into the server and maintained by the makers of that server. Spark Speed talks to that server cache through headers, but with LiteSpeed Cache the plugin and the server come from the same party. That is a real advantage. The plugin also has a broader feature list in places where Spark Speed deliberately is not: there is a CDN offer through QUIC.cloud, whereas Spark Speed has no CDN of its own and no rewriting of asset URLs to a CNAME. LiteSpeed Cache minifies and combines CSS and JS; Spark Speed combines CSS but does not minify it. The Database Cleaner of LiteSpeed Cache covers more than the autoload and Action Scheduler clean-up of Spark Speed. And the plugin page lists version 7.9.1 with a changelog dated 1 September 2026, so it is being maintained. If you want that breadth and free software, and have a suitable server, this is a strong alternative.

On 9 October 2026 we read the LiteSpeed Cache plugin page on WordPress.org (version 7.9.1) and the LiteSpeed documentation. For Spark Speed we used our own data matrix and the release notes of version 0.72.0. We did not install or measure LiteSpeed Cache. Where the documentation does not mention something, we write not listed instead of no. We do not state QUIC.cloud prices or credits, because they change; check them in your own dashboard. Features may have changed since this date.