Buy once. Make WordPress
one level faster.
Add Prime Cache Pro’s advanced optimization on top of the free page cache: Critical CSS, unused-CSS removal, AVIF, CDN, object cache and database optimization. No subscription — a one-time purchase from $19 for one site, with 1 year of updates. Start with Free to confirm the basics, then upgrade only the sites that need it.
🛡 14-day money-back guarantee — full refund, no questions asked | GPL v2+
- Set up in a few clicks
- No coding required
- One-time, no subscription
- Works on Apache / Nginx
The actual admin screen (Dashboard)
Try the free version in 5 minutes — install to measured result (English subtitles). Pro builds on this foundation with the AI advisor, CSS/JS combining, AVIF and CDN integration.
measured results
Measured on a live site and a test environment.
First, results from a live production site. Then the test environment that shows the ceiling of how the mechanism works. Plain-language labels included.
Google speed score (mobile)
82
From 60 before → +22
Big mobile gainThe score Google gives for speed on mobile — close to what visitors feel.
Total page weight
892KB
From 3,157KB before
-72%Image optimization plus file combining cut about 2.2 MB.
Files loaded
36
From 66 before
-45%Combining CSS / JS roughly halved the number of requests.
Time to first byte
~171ms
From ~229ms before
-25%Even on an already-fast managed host, it got shorter.
Time to first byte
~10ms
Plain WordPress 298ms
~30× fasterWhen static HTML is served without booting WordPress (theoretical ceiling).
Google speed score
100 / 86
Desktop / Mobile (out of 100)
100 on desktopMeasured in the test environment.
HTML weight
49KB
319KB uncompressed
-85%Reduced by gzip / Brotli compression.
* Live site: measured on a live production WordPress site on a managed host with Prime Cache OFF/ON (June 26, 2026; logged out, browser cache disabled, median of multiple runs). Desktop PageSpeed reached up to 100 (varies between runs). Test environment: LocalWP (nginx, PHP 8.3), home page. Results vary by server, theme, page and time, and are not guaranteed. Core Web Vitals are used in Google’s page assessment, but good scores alone do not guarantee search rankings.
free + pro
Free builds the base. Pro clears the bottlenecks.
Free alone already makes a noticeable difference. Pro then removes the remaining weight — CSS, images, transfer and the database — one by one.
This much, for free.
- Page cache (static HTML delivery, gzip)
- HTML / CSS / JS minify, Defer / Delay JS
- Lazy-load, dimension fill, WebP conversion
- Basic preload, 16 performance controls
Close the last gap.
- CSS / JS combine + Critical CSS, unused-CSS removal
- AVIF conversion + bulk image optimization
- CDN, Cloudflare / Sucuri / Varnish integration
- Object cache + database optimization
pro features
What Pro can do.
Leave the tedious tuning to Pro. Flip a toggle and the advanced optimizations turn on together.
CSS / JS Combine
Combine multiple CSS / JS files to cut HTTP requests. Pairs with the Free edition’s Defer / Delay JS to squeeze out render-blocking even further.
Critical CSS / Unused-CSS Removal
Generate above-the-fold CSS and strip unused rules per page. Lighter CSS delivery brings the first view forward.
WebP & AVIF Conversion + Bulk
Auto-convert JPG / PNG to WebP / AVIF. EXIF strip, resize, and bulk conversion of existing media.
CDN · Cloudflare / Sucuri / Varnish
Serve static assets from a CDN with domain sharding. Cloudflare, Sucuri and Varnish purge are supported.
Object Cache
Persistent object cache via APCu, Redis or Memcached. Cuts database queries and speeds up dynamic pages.
Database Optimization & Automation
Clean revisions, trash and expired transients, run OPTIMIZE TABLE, scheduled via WP-Cron.
AI Speed Diagnosis
Measures your server, theme, plugins, settings and homepage structure and has an AI explain what’s slow in plain language. Suggested setting changes are allowlist-validated and applied in one click, and a follow-up chat answers environment-specific questions. Uses your own API key (Anthropic / OpenAI / OpenRouter / Gemini, or the AI configured in WordPress); pick the model from a dropdown and verify it with a Test Connection button.
File Optimization (minify, combine, Delay JS)
Media (WebP / AVIF, bulk optimize)
ai advisor
Speed tuning you can talk to.
Not sure which toggles to flip? AI Speed Diagnosis measures your server, theme, plugins, settings and homepage structure, then has an AI explain what is slow — with a prioritized action plan.
1. Measure
Deterministic facts about your server and public homepage — blocking CSS, sync JS, fonts, images, ad placement. No visitor data, no credentials.
2. Diagnose
The AI reasons with guardrails learned from tuning real production sites, and returns a summary, findings and fixes ranked by severity.
3. Apply in one click
Every recommendation is double-validated against a safe allowlist before it is applied; the cache purges automatically and known-unsafe combinations (e.g. rewrite image delivery on nginx) are dropped.
4. Ask follow-ups
“How do I edit wp-config.php on my host?” — the chat answers with your diagnosis and environment as context.
Bring your own API key — Anthropic (Claude), OpenAI, OpenRouter, Google Gemini, or the AI already configured in WordPress. Pick the model from a dropdown and verify it with a Test Connection button. Strictly opt-in: diagnosis data never passes through Rapls Works.
free vs pro
Free vs Pro
Pro includes everything in Free. Each “—” below is an optimization only Pro provides.
| Feature | Free | Pro |
|---|---|---|
| Page cache (static HTML, gzip, mobile variant) | ✓ | ✓ |
| HTML / CSS / JS minify, Defer / Delay JS | ✓ | ✓ |
| Lazy-load, dimension fill | ✓ | ✓ |
| Image conversion | WebP | WebP + AVIF |
| CSS / JS combine, Critical CSS, unused-CSS removal | — | ✓ |
| Advanced preload (sitemap / Speculation Rules) | — | ✓ |
| CDN, Cloudflare / Sucuri / Varnish | — | ✓ |
| Object cache (APCu / Redis / Memcached) | — | ✓ |
| Database optimization + scheduling | — | ✓ |
| Google Fonts display=swap, security headers | ✓ | ✓ |
| Google Fonts combine & self-host | — | ✓ |
| AI speed diagnosis & consultation (BYOK) | — | ✓ |
pricing
Early-bird pricing. Buy once.
Not a subscription. One purchase includes 1 year of free updates & email support.
Free
Try the speed at no cost
$0
Free forever · WordPress.org
- Page cache (static HTML delivery)
- HTML / CSS / JS minify, Defer / Delay JS
- WebP conversion, lazy-load, dimension fill
- Basic preload, 16 performance controls
Pro · 1 site
For personal blogs & business sites
$39
$19-50%
One-time · 1 year of updates
⏳ Early-bird — until Aug 31, 2026
- Everything in Free, plus
- CSS / JS combine, Critical CSS, unused-CSS removal
- WebP + AVIF, advanced preload
- CDN, Cloudflare / Sucuri / Varnish
- Object cache, database optimization
🛡 14-day money-back guarantee — no questions asked
Pro · 5 sites
For agencies & freelancers
$79
$39-50%
One-time · 1 year of updates
⏳ Early-bird — until Aug 31, 2026
- Everything in Pro
- Use on up to 5 sites
- Speed up many clients at once
- Best value at about $7.8 / site
🛡 14-day money-back guarantee — no questions asked
| Billing model | Typical speed plugins | Prime Cache Pro |
|---|---|---|
| Payment | Annual subscription (renews yearly) | One-time (single payment) |
| 1-site guide | $59–99 / year | from $19 (early-bird) |
| Year 2 onward | Recurring charge | No extra cost to keep using Updates / support extension optional |
* Example competitor 1-site plans: WP Rocket $59/yr, FlyingPress $59/yr, W3 Total Cache Pro $99/yr (as of June 26, 2026; official site prices, excl. sale / FX / tax; all renew annually). The plugin keeps working after 1 year (renewal optional).
* Early-bird pricing ends August 31, 2026; afterward it returns to list price ($39 / $79). Prices in USD, excl. tax.
* 14-day money-back guarantee: full refund within 14 days of purchase, no questions asked (Refund Policy).
🛡 Before you buy, please check
- Prime Cache Free 1.10.29 or later is working correctly
- You can deactivate other cache plugins
- WebP / AVIF conversion needs WebP / AVIF-capable GD or Imagick
- Object cache needs Redis / Memcached / APCu
And if it doesn’t work out, you’re covered: full refund within 14 days of purchase, no questions asked — one email is all it takes. We still recommend confirming page caching and the basic optimizations with the free version first. If you’re unsure whether you need Pro, contact us before purchase.
compatibility
Runs on common WordPress environments.
faq
Frequently asked questions
Do I need Free to use Pro?
Is Pro a subscription?
What is the difference between 1-site and 5-site?
Can I get a refund?
Can caching or optimization break my site’s layout?
Can I run it alongside another cache plugin?
What are the server requirements?
Does the AI Speed Diagnosis cost extra?
Add Pro to Free.
Make WordPress a level faster.
A one-time purchase with 1 year of updates. Start with Free to confirm the speed, then move up to Pro. Early-bird 50% OFF until August 31, 2026 (returns to list price afterward).
🛡 14-day money-back guarantee — full refund, no questions asked
