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wp.org search vs our merit ranking: “compressor”

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 “compressor”, we agree with wp.org on the top plugin, and our order differs from theirs on 11 of the top 20. 2 plugins are 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 it throws errors on current PHP, whether the install base is organic or host-pushed, and its risk of being pulled.

Ranked above its merit

JPEG PNG Compressor shows at wp.org #2 but places #8 on merit, a gap of 6 places. Its 50+ 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

Image Optimizer by 10web – Image Optimizer and Compression plugin places #6 on merit, 4.5★ from 54 reviews, but shows at wp.org #19. A smaller install base keeps it further down the default search order than its quality signals alone would.

merit plugin wp.org
1 reSmush.it : The original free image compressor and optimizer plugin 100K+ · 4.3★ (166) wp.org #1 2 WP Fastest Cache – WordPress Cache Plugin 1M+ · 4.9★ (4228) wp.org #4 2 too low 3 Highcompress Image Compressor 600+ · 4.9★ (143) wp.org #3 4 ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF 300K+ · 4.5★ (830) wp.org #9 ↓3 5 too low 5 Comet Cache 20K+ · 4.4★ (108) wp.org #12 ↓2 7 too low 6 Image Optimizer by 10web – Image Optimizer and Compression plugin 3K+ · 4.5★ (54) wp.org #19 ↓3 13 too low 7 Disable Bulk Smush Limit of Smush Image Optimization 3K+ · 4.5★ (15) wp.org #11 ↓2 4 too low 8 JPEG PNG Compressor 50+ · 5.0★ (1) wp.org #2 6 too high 9 Hridyaa Image Compressor and Optimizer 10+ · 5.0★ (2) wp.org #7 ↑1 2 too high 10 PDF Compressor & Watermark – iLovePDF 600+ · 3.4★ (5) wp.org #6 ↓1 4 too high 11 Web Pixel Studio Image Compressor 50+ · 5.0★ (1) wp.org #5 ↓1 6 too high 12 ImReso: Unlimited Target-Size Image Compressor 30+ · 0.0★ (0) wp.org #8 ↓1 4 too high 13 iLoveIMG 100+ · 3.2★ (5) wp.org #15 ↓2 2 too low 14 OmniPixy Browser Image Compressor — · 5.0★ (1) wp.org #10 ↑4 4 too high 15 ImageCraft – Image Optimizer, WebP/AVIF & AI Alt Text 10+ · 5.0★ (2) wp.org #21 6 too low 16 Icosix Image Compressor 10+ · 0.0★ (0) wp.org #13 ↓2 3 too high 17 Squishly — Image & PDF Compressor & Converter 10+ · 0.0★ (0) wp.org #14 ↑4 3 too high 18 Cleanor: Image Compressor & Converter 20+ · 0.0★ (0) wp.org #16 ↓4 2 too high 19 J JaziTech Image Compressor — · 0.0★ (0) wp.org #17 2 too high 20 WebPressor – WebP & AVIF Image Converter, Optimizer & Compressor 10+ · 0.0★ (0) wp.org #18 ↓3 2 too high 21 Image Compressor WebP by htmlrunner — · 0.0★ (0) wp.org #20 ↓3 1 too high 22 Kashii Client‑Side Image Compressor — · 0.0★ (0) wp.org #23 ↓4 1 too low 23 GrowthLife Media Suite — · 5.0★ (1) wp.org #24 ↓2 1 too low 24 iLoveIMG Watermark 10+ · 1.8★ (4) wp.org #22 ↓2 2 too high

Merit ranking caps the install boost at 1M (wp.org leaves it uncapped), replaces the raw star average with a volume-weighted Bayesian 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.