Companies Using WP Fastest Cache

I run the crawler behind these numbers, and WP Fastest Cache is a plugin we see through its side jobs. A domain counts when a page links a file from /wp-content/cache/wpfc-minified/, the folder the plugin writes minified and combined CSS and JavaScript into, or defines Wpfcll, the object its lazy-load script creates. Our October 2026 crawl finds 207,566 live domains doing that, 132,230 of them matched to a company, 3rd of 45 in Performance Optimization.

We loaded all 90 candidate company pages in mid-October 2026, and 78 served the plugin's files. Of those 78, 74 linked minified or combined CSS, 44 combined JavaScript and only 2 ran the lazy-load script. 64 also ended with the plugin's page-cache comment.

A page cache we mostly can't see

That comment is the plugin's main job, and our rule doesn't read it. A site that turns on page caching and leaves minification off shows no WP Fastest Cache file, so it doesn't count here. WordPress.org lists 1+ million active installations and the vendor's site claims 1,500,000+ websites; the gap to our 207,566 is partly that blind spot and partly that installations and live domains are different counts. Lazy loading is a Premium feature according to the plugin's listing, which fits how rare the Wpfcll script is in our sample.

Sales signal: every domain here runs WP Fastest Cache's file optimisation, not only its cache. The owner has already tinkered with speed settings, and that's the person a performance or hosting pitch needs to reach.

What the chart shows

The chart reads 181,434 in June, 199,500 in July, 201,532 in August, 206,938 in September and 207,566 in October. Most of the June to July step is ours: the set of domains we crawl turns over every month, with dead sites dropping out and newly found ones added, and our detection widens over time. The later months carry the same two effects.

Since we began tracking WP Fastest Cache on 16 March 2026, 31,027 domains have dropped it. A few days after that count, about one in nine of those domains still ran it on another hostname.

"WP Fastest Cache's page cache leaves a comment in the HTML, not a file, so the plugin's main feature is the one we can't count. The 207,566 domains are the sites that also let it minify files." - David Thomson, CTO at TechnologyChecker.io

Sales signal: about 207,000 live domains with steady churn. It's a big, stable pool to prospect, not a growth story.

Germany comes first

Germany has 18,841 matched companies, just ahead of the United States at 17,456. France (9,569), the United Kingdom (8,112), Spain (7,483), Brazil (7,375) and Italy (7,368) follow, and Turkey (2,413) is in the top fifteen. Neither Autoptimize nor Perfmatters looks like that. Autoptimize has the US first by about three to two, and Perfmatters, a paid plugin priced in dollars, has about ten American companies for every German one.

Sales signal: lead with German and French. A WordPress product sold only in English and priced only in dollars misses the biggest single market on this list.

Who runs it

67.43% of matched companies with a known size have 1 to 10 employees and 22.14% have 11 to 50. 38.97% were founded in the 2010s and 15.95% in the 2020s. The 818 companies above 1,000 staff often run it on one property: UCLA Health on a Chinese-language site, Symrise on its blog, Cooley on a site for companies planning an IPO, Jet2 on its careers site. Sanmina and DO & CO use it on their main sites. The largest single-owner cluster we found is 157 domains of a water-saving products maker, all showing the same home page, 0.08% of the clean set.

Sales signal: this is a small-business list. For enterprise names, treat each one as a single site owned by one team, not a company-wide standard.

Where it's hosted

The hosts on WP Fastest Cache domains are mostly shared and self-managed: Plesk (5.36%), IONOS (4.63%), OVHcloud (4.0%), Hostinger (2.82%) and Hostgator (2.07%), with GoDaddy's DNS on 7.11%. WP Engine isn't in the top six. In our company sample, 1 of 74 pages that served the plugin to a plain request sent WP Engine's header, against 25 of 70 on Autoptimize's list. WP Engine's support pages say caching plugins can conflict with its built-in caching, so a page-cache plugin is mostly something you install when your host doesn't cache for you.

Sales signal: a WP Fastest Cache site is a good prospect for managed WordPress hosting. The owner is doing a job by plugin that a managed host does on the server.

Paired with Autoptimize

No pair passes our switching tests. 3,550 domains run WP Fastest Cache and Autoptimize today, out of 5,168 ever seen with both, and 399 run it with Perfmatters (592 ever). In both pairs about two thirds of the domains ever seen with both still run both: one plugin caches the page and the other handles files or scripts.

"Its users don't trade WP Fastest Cache for Autoptimize. They run the two together, and the overlap is the pattern." - David Thomson, CTO at TechnologyChecker.io

Sales signal: pitch file optimisation or script control as an add-on to WP Fastest Cache, not a replacement for it.

What it costs

The plugin is free on WordPress.org, by Emre Vona. The free version caches pages, minifies HTML and CSS, combines CSS and JavaScript and sets gzip and browser caching. WP Fastest Cache Premium is a one-time fee (checked October 2026): $49 for one licence, $125 for three, $175 for five and $300 for ten. It adds mobile and widget caching, JavaScript minification, deferred and delayed JavaScript, lazy loading, image optimisation and WebP conversion.

Sales signal: a $49 lifetime licence anchors these buyers' expectations. WP Rocket, whose profile counts 733,891 domains in Caching in August 2026, sells to the same need, but these owners chose free or a one-off payment.

Key takeaways

1. 207,566 live domains, 3rd of 45 in Performance Optimization, and a floor: page-cache-only installs are invisible.

2. Germany (18,841) narrowly leads the US (17,456).

3. 67.43% of matched companies have 1 to 10 staff.

4. Shared and self-managed hosting; WP Engine barely appears.

5. 3,550 domains run it with Autoptimize today.

How to use this list

Filter by country, language and company size, then by host. For every WP Fastest Cache domain with company and stack data, explore TechnologyChecker.io. Our guide to technology detection methods explains how file-path rules work and what they miss.