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wp.org search vs our merit ranking: “bulk converter”

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 “bulk converter”, 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

UWH Image Optimizer & Converter shows at wp.org #6 but places #17 on merit, a gap of 11 places. Its 80+ 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

FOX – Currency Switcher Professional for WooCommerce places #9 on merit, 4.4★ from 250 reviews, but shows at wp.org #24. 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 Converter for Media – Optimize images | Convert WebP & AVIF 500K+ · 4.9★ (1108) wp.org #1 2 CompressX — AVIF & WebP Converter, Media Replacement 40K+ · 5.0★ (197) wp.org #3 ↓1 1 too low 3 ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF 300K+ · 4.5★ (830) wp.org #11 ↓3 8 too low 4 Price Update: Bulk Pricing Editor for WooCommerce 1K+ · 4.0★ (10) wp.org #2 2 too high 5 Cimo – Free Instant Image Optimizer & WebP Converter 10K+ · 4.9★ (20) wp.org #8 ↓2 3 too low 6 Prices in BGN and EUR & Bulk Converter 90+ · 5.0★ (6) wp.org #4 ↓1 2 too high 7 Greenshift – animation and page builder blocks 70K+ · 4.8★ (107) wp.org #17 ↓3 10 too low 8 Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIF 900K+ · 4.3★ (1657) wp.org #21 ↓5 13 too low 9 FOX – Currency Switcher Professional for WooCommerce 50K+ · 4.4★ (250) wp.org #24 ↓6 15 too low 10 WebP Express 300K+ · 4.4★ (162) wp.org #23 ↓3 13 too low 11 Upload Converter for WebP 400+ · 5.0★ (4) wp.org #5 ↓1 6 too high 12 MPG – Multiple Page Generator, Bulk Landing Pages & Programmatic SEO 2K+ · 3.9★ (27) wp.org #14 ↓2 2 too low 13 Squeeze – Browser-Based Image Compression & WebP Converter (No API, No Limits) 3K+ · 5.0★ (6) wp.org #15 ↓8 2 too low 14 Swift Switcher — Bulk & Custom Post Type Converter 700+ · 5.0★ (2) wp.org #7 ↓2 7 too high 15 LightMoving InnoDB Converter 40+ · 5.0★ (2) wp.org #9 ↑1 6 too high 16 Image Optimizer, WebP Converter & Compression – Toolszu 200+ · 5.0★ (2) wp.org #12 4 too high 17 UWH Image Optimizer & Converter 80+ · 5.0★ (1) wp.org #6 11 too high 18 Soovex WebP Converter – Convert Images | Optimize & Compress | Unlimited Conversions 100+ · 5.0★ (1) wp.org #10 ↓1 8 too high 19 Skyspeed – Image Optimizer, WebP & AVIF Converter 40+ · 5.0★ (2) wp.org #22 ↓5 3 too low 20 Bulk Interlinking Tool 20+ · 0.0★ (0) wp.org #19 ↓4 1 too high 21 imagIn – WebP & AVIF Converter 30+ · 5.0★ (1) wp.org #16 5 too high 22 JHMG Converter For Elementor to Divi 5 90+ · 4.0★ (1) wp.org #18 ↓5 4 too high 23 WebP Image Converter & Replacer – Convert to WebP, No Duplicates 100+ · 3.0★ (2) wp.org #13 ↓2 10 too high 24 I-PR AVIF Converter – Automatic Image Optimization 20+ · 5.0★ (1) wp.org #20 ↓1 4 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.