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wp.org search vs our merit ranking: “free images”

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 “free images”, we agree with wp.org on the top plugin, and our order differs from theirs on 10 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

All Sources Images – Free Images from Pixabay, Unsplash, Openverse, Pexels & Giphy shows at wp.org #6 but places #21 on merit, a gap of 15 places. Its 500+ installs carry it up the search order; its 5.0★ average from 5 reviews, plus freshness and upkeep, place it lower on our volume-weighted scale.

Buried gem

FooGallery Photo Gallery : Image, Video & Masonry Galleries places #11 on merit, 4.8★ from 996 reviews, but shows at wp.org #16. 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 Instant Images – One-click Image Uploads from Unsplash, Openverse, Pixabay, Pexels, and Giphy 100K+ · 4.8★ (59) wp.org #1 2 Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider 500K+ · 4.6★ (743) wp.org #3 1 too low 3 Smush – Image Optimization, Compression, Lazy Load, WebP & CDN 1M+ · 4.8★ (6053) wp.org #4 ↑6 1 too low 4 reSmush.it : The original free image compressor and optimizer plugin 100K+ · 4.3★ (166) wp.org #5 ↑1 1 too low 5 Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIF 900K+ · 4.3★ (1657) wp.org #7 ↓2 2 too low 6 EWWW Image Optimizer 1M+ · 4.8★ (1844) wp.org #8 ↓1 2 too low 7 Free Assets Library – Openverse/Pixabay 600+ Million Images 4K+ · 4.4★ (11) wp.org #2 5 too high 8 Robo Gallery – Photo & Image Slider 40K+ · 4.3★ (406) wp.org #9 1 too low 9 Modula Image Gallery – Photo Grid & Video Gallery 100K+ · 4.7★ (617) wp.org #12 ↑3 3 too low 10 TinyPNG Image Optimization – Image Compression JPEG & PNG | Convert to WebP & AVIF 100K+ · 4.5★ (181) wp.org #10 ↑4 11 FooGallery Photo Gallery : Image, Video & Masonry Galleries 100K+ · 4.8★ (996) wp.org #16 ↑2 5 too low 12 WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 1M+ · 4.8★ (2617) wp.org #14 ↓2 2 too low 13 Quick Featured Images 50K+ · 4.7★ (235) wp.org #13 14 Elementor Website Builder – more than just a page builder 10M+ · 4.5★ (7322) wp.org #18 ↓2 4 too low 15 AI-Powered Carousel, Slider, Video & Photo Gallery Blocks by WP Carousel 60K+ · 4.7★ (434) wp.org #19 4 too low 16 Free Shipping Label and Progress Bar for WooCommerce 5K+ · 5.0★ (43) wp.org #11 5 too high 17 LiteSpeed Cache 7M+ · 4.8★ (2778) wp.org #20 ↑2 3 too low 18 ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF 300K+ · 4.5★ (830) wp.org #22 ↓2 4 too low 19 ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization 10K+ · 4.8★ (145) wp.org #24 ↓1 5 too low 20 Cimo – Free Instant Image Optimizer & WebP Converter 10K+ · 4.9★ (20) wp.org #15 ↓7 5 too high 21 All Sources Images – Free Images from Pixabay, Unsplash, Openverse, Pexels & Giphy 500+ · 5.0★ (5) wp.org #6 ↑3 15 too high 22 Vigilant – 100% Free Security Suite: Firewall, 2FA, Login, Headers, Scanner… 3K+ · 5.0★ (24) wp.org #23 ↓2 1 too low 23 Xpro Theme Builder For Elementor – FREE 20K+ · 5.0★ (14) wp.org #21 ↑3 2 too high 24 Web Directory plugin Free – AI powered 300+ · 4.1★ (20) wp.org #17 7 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.