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wp.org search vs our merit ranking: “clear nginx clear”

wp.org orders by popularity, so a plugin a host bundled onto millions of sites, or a big-brand one that's slow and mediocre, can sit at the top. Our ranking is built to answer a different question: which of these is actually worth installing. How this works →

For “clear nginx clear”, we agree with wp.org on the top plugin, and our order differs from theirs on 13 of the top 20.

wp.org search ranks on

Install count (uncapped), the raw star average, freshness, and support. Popularity dominates, so the biggest install base usually wins regardless of how it got there.

We add

A cap on the install boost, volume-weighted ratings, and signals wp.org can't see: whether the install base is organic or host-pushed, and its risk of being pulled.

Ranked above its merit

Clear Cache Everywhere shows at wp.org #2 but places #16 on merit, a gap of 14 places. Its 1K+ installs carry it up the search order; its 5.0★ average from 1 reviews, plus freshness and upkeep, place it lower on our volume-weighted scale.

Buried gem

W3 Total Cache places #8 on merit, 4.4★ from 5420 reviews, but shows at wp.org #20. A smaller install base keeps it further down the default search order than its quality signals alone would.

How this rank is calculated

Each plugin's merit score multiplies these inputs together: how recently it was updated, how current its "tested up to" WordPress version is, its install base (log scale, capped at 10 million), its support thread resolution rate, and a rating score. The rating score weights the star average by review volume against a sitewide prior, then scales it by the lower bound of the share of 4 and 5 star reviews. A plugin with 3.7 stars from tens of thousands of reviews can still outscore a 4.9 with a few dozen, because the small sample carries less certainty.

A health factor between 0.4 and 1.15 then adjusts that score for what wp.org's search can't see: PHP fatals or failed activations on a test install, PHP and WordPress compatibility, memory and page-speed footprint, suspicious review patterns, closure risk, and a large install base with very few reviews. Clean, adopted plugins earn a small lift.

A keyword ranking starts from wp.org's search order for the term, weighting each position by 1 divided by its place, then applies the merit correction and health factor above. Relevance to the keyword stays in the result, so the order can differ from the all-categories list on /best, which scores plugins with no search term.

Hover a row to see the main reason for its position.

merit plugin wp.org
1 Nginx Helper 200K+ · 4.4★ (31) wp.org #1 2 WP Fastest Cache – WordPress Cache Plugin 1M+ · 4.9★ (4230) wp.org #7 5 too low 3 Speed Optimizer – The All-In-One Performance-Boosting Plugin 1M+ · 4.2★ (641) wp.org #5 2 too low 4 Smush – Image Optimization, Compression, Lazy Load, WebP & CDN 1M+ · 4.8★ (6053) wp.org #9 5 too low 5 Really Simple Security – Simple and Performant Security (formerly Really Simple SSL) 3M+ · 4.9★ (8870) wp.org #10 5 too low 6 Hide My WP Ghost – Security & Firewall 100K+ · 4.5★ (373) wp.org #8 2 too low 7 Hestia Nginx Cache 1K+ · 5.0★ (9) wp.org #3 4 too high 8 W3 Total Cache 900K+ · 4.4★ (5420) wp.org #20 12 too low 9 Sucuri Security – Auditing, Malware Scanner and Security Hardening 600K+ · 4.2★ (386) wp.org #15 6 too low 10 xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN 10K+ · 5.0★ (23) wp.org #11 1 too low 11 Prevent Browser Caching 10K+ · 4.9★ (29) wp.org #12 1 too low 12 Proxy Cache Purge 50K+ · 4.4★ (26) wp.org #13 1 too low 13 WPVulnerability 10K+ · 5.0★ (20) wp.org #18 5 too low 14 Nginx Cache Purge Preload 200+ · 5.0★ (4) wp.org #6 8 too high 15 Cleavr Clear Cache 300+ · 5.0★ (2) wp.org #4 11 too high 16 Clear Cache Everywhere 1K+ · 5.0★ (1) wp.org #2 14 too high 17 Easy Optimizer – PageSpeed, Cache & Core Web Vitals (Unused CSS, Delay JS, Lazy Load) 1K+ · 4.6★ (18) wp.org #21 4 too low 18 Secure MCP Server for Claude, ChatGPT, Gemini and other AI Agents 8K+ · 5.0★ (10) wp.org #23 5 too low 19 The Cache Purger 1K+ · 4.5★ (6) wp.org #17 2 too high 20 Cache Using Gzip 400+ · 5.0★ (3) wp.org #24 4 too low 21 Max Upload File Size Manager 400+ · 5.0★ (2) wp.org #22 1 too low 22 HTL Clear All Cache 10+ · 0.0★ (0) wp.org #16 6 too high 23 Ergonet Cache 3K+ · 5.0★ (1) wp.org #14 9 too high 24 Purgify – Clear Cache, Transients & Database 10+ · 5.0★ (1) wp.org #19 5 too high

Merit ranking caps the install boost at 10M (wp.org leaves it uncapped), replaces the raw star average with a volume-weighted score and a Wilson lower bound, and keeps wp.org's own freshness and compatibility decays. Method from the plugin-directory source; see Meta Trac #8298. Positions are tracked daily from the first visit to a keyword, so the small arrows show movement since tracking began.