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wp.org search vs our merit ranking: “search by image”

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 “search by image”, we agree with wp.org on the top plugin, and our order differs from theirs on 7 of the top 20. 1 plugin is pushed down for signals wp.org ignores: errors, a host-installed base, or removal risk.

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

Image Optimizer – Compress Images and Convert to WebP or AVIF shows at wp.org #11 but places #23 on merit, a gap of 12 places. Its 1M+ installs carry it up the search order; its 1.7★ average from 81 reviews, plus freshness and upkeep, place it lower on our volume-weighted scale.

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 Rank Math SEO – AI SEO Tools to Dominate SEO Rankings 4M+ · 4.8★ (7,522) wp.org #1 2 EWWW Image Optimizer 1M+ · 4.8★ (1,844) wp.org #2 3 FiboSearch – Ajax Search for WooCommerce 100K+ · 4.9★ (1,815) wp.org #4 ↓1 wp.org ranks it 1 place below merit 4 Ajax Search Lite – Live Search & Filter 70K+ · 4.8★ (266) wp.org #3 ↑2 wp.org ranks it 1 place above merit 5 Ivory Search – WordPress Search Plugin 90K+ · 4.9★ (1,562) wp.org #8 ↓1 wp.org ranks it 3 places below merit 6 Search Regex 100K+ · 4.7★ (101) wp.org #5 ↓1 wp.org ranks it 1 place above merit 7 ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF 300K+ · 4.5★ (830) wp.org #7 ↓1 8 Image Watermark 40K+ · 4.2★ (299) wp.org #6 ↑2 wp.org ranks it 2 places above merit 9 Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider 500K+ · 4.6★ (743) wp.org #9 10 Featured Image from URL (FIFU) 60K+ · 4.6★ (264) wp.org #10 ↑4 11 Elementor Website Builder – more than just a page builder 10M+ · 4.5★ (7,322) wp.org #14 ↓2 wp.org ranks it 3 places below merit 12 Robo Gallery – Photo & Image Slider 40K+ · 4.3★ (406) wp.org #12 13 Advanced Woo Search – Product Search for WooCommerce 60K+ · 4.8★ (248) wp.org #13 ↓2 14 Modula Image Gallery – Photo Grid & Video Gallery 100K+ · 4.7★ (617) wp.org #17 ↓1 wp.org ranks it 3 places below merit 15 All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) 2M+ · 4.7★ (5,232) wp.org #18 ↓1 wp.org ranks it 3 places below merit 16 WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 1M+ · 4.8★ (2,617) wp.org #24 wp.org ranks it 8 places below merit 17 Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIF 900K+ · 4.3★ (1,657) wp.org #22 wp.org ranks it 5 places below merit 18 Jetpack – AI Agents & MCP, Security, Backup & Analytics 3M+ · 3.7★ (2,409) wp.org #23 wp.org ranks it 5 places below merit 19 Search Analytics for WP – Site Search Tracking 3K+ · 5.0★ (30) wp.org #21 wp.org ranks it 2 places below merit 20 WP Search with Algolia 7K+ · 4.5★ (24) wp.org #16 ↓1 wp.org ranks it 4 places above merit 21 Sokol: Smart WooCommerce Search 5K+ · 4.4★ (24) wp.org #19 ↓1 wp.org ranks it 2 places above merit 22 NGG Smart Image Search 400+ · 4.9★ (13) wp.org #20 wp.org ranks it 2 places above merit 23 Image Optimizer – Compress Images and Convert to WebP or AVIF 1M+ · 1.7★ (81) wp.org #11 ↓1 wp.org ranks it 12 places above merit 24 Image Prioritizer 40K+ · 5.0★ (1) wp.org #15 ↓2 wp.org ranks it 9 places above merit

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.