Robin Image Optimizer – Unlimited Image Optimization, WebP & AVIF
by Themeisle · Performance
Also makes 26 other plugins · 1.8M+ installs across the portfolio →
Unlimited automatic image optimization for WordPress. Compress images, convert to WebP, and improve site speed without losing image quality.
Try it live opens a temporary test site in your browser, which can take about 20 seconds to load. Plugins that rely on outside services or a full server may not work completely there.
Health
A 86/100
no flags
Active installs
100K+
≈190K estimated
Momentum
+37%
downloads vs prior 30d
Biggest opportunity: Swap “compress images”, “optimize images” and “avif” for “conversion rate optimization”, “landing page optimization” and “image conversion”. “compress images” isn't earning its slot: it only gets you to #14. “conversion rate optimization” sits at #5 untagged, close enough for a declared tag to move it up. “optimize images” isn't earning its slot: it only gets you to #13. “landing page optimization” sits at #5 untagged, close enough for a declared tag to move it up. “avif” isn't earning its slot: it only gets you to #12. “image conversion” sits at #6 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
86 health vs 69 average across 1,808 Performance plugins
Install conversion
How it's measured →4.3%
of downloads still active
At least 100K of 2.3M lifetime downloads are still running, above its category: the median Performance plugin keeps 1.4%, across 1,103 plugins.
Downloads count every update, not just first installs, so older and more frequently released plugins read lower. Compare against other Performance plugins, not across the directory. wp.org reports active installs as the bottom of a band, so the real rate is this or higher.
This plugin shipped 11 releases in the last 12 months, and every existing install that updated counted as another download. wp.org publishes no split between first installs and updates, so we show the raw rate rather than guess at one.
Details
Directory ranking optimization
How it's scored →How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.
Excellent listing optimization
Well tuned across the board
Updated 32 days ago
Tested up to WordPress 7.1.4, the current branch or newer
4.4★ over 131 reviews, smoothed to 4.32★
5 of 5 tags set · short description in place
1 of 1 support threads resolved in the last 2 months
Search visibility
How it's tracked →Directory searches this plugin turns up in, and which way each one is moving. WordPress.org publishes no history of search positions, so this starts the day we first tracked a keyword and never backfills.
44
Momentum
Holding steady
+0.1
Velocity
places per keyword, 28d
32%
Breadth
of keywords climbing, 28d
-0.0
Acceleration
recent half vs earlier
wp.org is where the directory puts the plugin for that search. On merit is where it would sit if results were ranked on rating, support and updates, without the install boost. The last column is how far the wp.org position moved, from our first reading in the last 90 days to the latest.
| Keyword | wp.org | On merit | wp.org move, 90 days |
|---|---|---|---|
| image optimizer | #4 | #4 | down 1 |
| image optimization your tag | #5 | #6 | up 1 |
| ai optimizer | #2 | #2 | 0 |
| unlimited | #6 | #5 | down 1 |
| ad optimization | #2 | #2 | up 2 |
| optimizer | #6 | #7 | down 1 |
| optimization | #8 | #8 | 0 |
| image quality | #7 | #6 | down 1 |
| landing page optimization | #5 | #5 | 0 |
| conversion rate optimization | #5 | #7 | 0 |
| image conversion | #6 | #6 | 0 |
| wordpress image optimizer | #4 | #5 | 0 |
| bulk image optimizer | #4 | #5 | up 1 |
| image | #12 | #12 | up 2 |
| webp your tag | #12 | #12 | up 1 |
| avif your tag | #12 | #11 | down 1 |
| optimize images your tag | #13 | #17 | 0 |
| convert to webp | #11 | #10 | 0 |
| compress images your tag | #14 | #13 | down 1 |
| plugin optimizer | #5 | #6 | 0 |
212 searches this plugin appeared in over the last 90 days, 20 listed. 137 left out as unrelated or noise (years, numbers, stray words).
What to do about it
- Swap “compress images”, “optimize images” and “avif” for “conversion rate optimization”, “landing page optimization” and “image conversion”. “compress images” isn't earning its slot: it only gets you to #14. “conversion rate optimization” sits at #5 untagged, close enough for a declared tag to move it up. “optimize images” isn't earning its slot: it only gets you to #13. “landing page optimization” sits at #5 untagged, close enough for a declared tag to move it up. “avif” isn't earning its slot: it only gets you to #12. “image conversion” sits at #6 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
- One page off on “avif”. #12 puts you just past the first ten results, where almost all the clicks stop. The gap to close is small.
- One page off on “compress images”. #14 puts you just past the first ten results, where almost all the clicks stop. The gap to close is small.
- One page off on “optimize images”. #13 puts you just past the first ten results, where almost all the clicks stop. The gap to close is small.
Daily downloads
Since 5 Oct 2022 · 1,488 days · wp.org + Plugin Pulse archive
30-day downloads
Rolling 30-day volume · peak 173K · peaks are release surges
Directory rank vs rivals
wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you
Rating trend
Star average over time · dips mark rough releases
Health trend
Composite health score, snapshotted daily
Update activity
How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.
Release cadence
Actively maintainedHow often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.
11
releases in the last 12 months
1mo ago
latest release · v2.0.9 · 29 Sep 2026
27
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin · 50% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.
Estimated active installs
The public count shows “100K+”. Our estimate pins where the real number sits.
Crossed into this band 5.7 years ago; a band this size takes about a year or more to cross, which places it about 90% of the way through.
Install history since 18 Nov 2021
Recent reviews
All reviews on wp.org ↗- ★★★★★ vasyanalbancev7774mo ago
Очень полезный плагин для сайтов – Рекомендую
Read on wp.org ↗ - ★★★★★ shivamdesai5mo ago
I am using Robin Image Optimizer along with super page cache pro. Really like the features it provides for the pricing.
Read on wp.org ↗ - ★★★★★ corbiewordpress6mo ago
excellent performance and quality for free software
Read on wp.org ↗ - ★★★★★ artblackman8mo ago
It would be nice to add disabling scheduled launch. Manual only
Read on wp.org ↗ - ★★★★★ upges9mo ago
The best plugin for image optimization. But after the latest update, there’s a delay when converting Image Features to webp. Although it might just be my feeling. BTW, thanks.
Read on wp.org ↗ - ★★★★★ marineheatingsolutions10mo ago
Your “fix” lasted for about three minutes. I have since then waited to give you time to migrate your servers. I have uninstalled and reinstalled the plugin several times. I have tried to get it to optimise the images about 1000 times. It keeps stopping and throwing up errors. I have wasted hours and days trying to get this thing to work. It’s infuriating!! All this is because you are selling a pro upgrade for a plugin that isn’t currently working, showing a complete disregard for other people.
Read on wp.org ↗ - ★★★★★ sorcel10mo ago
Easy to use
Read on wp.org ↗ - ★★★★★ acircus11mo ago
Does what it says – and does it good
Read on wp.org ↗
Latest updates
via wp.org changelogRecent releases and news for this plugin
- 2026-09-29 Version 2.0.9 Fixed frontend page failures when Picture delivery processes converted images. Fixed scheduled WebP conversion crashes for image attachments with missing metadata. Fixed Overall Saving values for images and thumbnails. F 2.0.9
- 2026-09-21 Version 2.0.8 Enhanced Security See changelog for all versions . 2.0.8
- 2026-09-07 Version 2.0.7 Fixed license updates when WordPress has no secure authentication key. Fixed compression mode descriptions to identify displayed file-size reductions as average results. Updated dependencies See changelog for all version 2.0.7
- 2026-08-04 Version 2.0.6 Fixed an issue where bulk optimization could keep showing as still running after every image had already finished processing. Updated dependencies Removed obsolete, obfuscated code that could trigger false-positive malwa 2.0.6
- 2026-05-07 Version 2.0.5 Update internal dependencies See changelog for all versions . 2.0.5
Security history
via Wordfence IntelligenceAll 4 disclosed vulnerabilities are patched in the current version (2.0.9). Sites still on an older version should update.
- Patched High · 7.2 Robin Image Optimizer 2.0.0 - 2.0.7 - Unauthenticated Stored Cross-Site Scripting ↗2026-09-28 CVE-2026-89193 Improper Neutralization of Input During Web Page Generation Affects 2.0.0 - 2.0.7 Patched in 2.0.8
- Patched Medium · 6.4 Robin Image Optimizer <= 2.0.2 - Authenticated (Author+) Stored Cross-Site Scripting via Image Alternative Text Field ↗2026-02-04 CVE-2026-1319 Improper Neutralization of Input During Web Page Generation Affects <= 2.0.2 Patched in 2.0.3
Vulnerability records provided by Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. License and terms.
CVE records: Copyright 1999-2026 The MITRE Corporation. CVE terms of use.
Behavioral tests
via WP HiveAutomated install-time checks, tested on PHP 8.1.12 · WP 7.0.1
Languages
via translate.wordpress.orgTranslated into 15 languages, 5 at 90% or more
AI assistants
How it's measured →Whether ChatGPT and Claude name this plugin when asked the category question, and whether the readme gives them something to quote.
Not measured yet for this plugin’s topics. Its tracked searches are not among the measured topics. See the topics measured so far.
Readme readiness
7 of 8 pass · checked 25 Oct 2026Can an assistant quote this readme? Eight deterministic checks over the wp.org listing, no model involved.
- ✓ Says what it does "Unlimited automatic image optimization for WordPress. Compress images, convert to WebP, and improve site sp..."
- ✓ Has a FAQ 8 questions in the FAQ.
- ✓ FAQ asks real questions 8 of 8 read like questions a user would type.
- ✓ Names who it is for Names its audience or use cases ("built for", "who want", "for bloggers").
- ! Names what it works with Names no plugin, service or platform it works with.
- ✓ Headings and lists 26 headings and 7 lists.
- ✓ Enough to quote 9,517 characters of description.
- ✓ Tags match the text All 5 tags appear in the text.
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
- 2021-02-03 90K+ → 100K+ up after 105 days in tier
- 2020-10-21 80K+ → 90K+ up after 105 days in tier
- 2020-07-08 70K+ → 80K+ up after 58 days in tier
- 2020-05-11 60K+ → 70K+ up after 175 days in tier
- 2019-11-18 50K+ → 60K+ up after 25 days in tier
- 2019-10-24 40K+ → 50K+ up
Competes with
The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).
-
Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization 200K+ installs · 4.7★ · 5 shared tags A -
SlashImage – Image Optimizer: Compress Images, Convert WebP & AVIF 90+ installs · 4.0★ · 5 shared tags B -
Converter for Media – Optimize images | Convert WebP & AVIF 500K+ installs · 4.9★ · 4 shared tags A -
Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize 10K+ installs · 4.5★ · 4 shared tags A -
MegaOptim Image Optimizer – Convert to WebP & AVIF, Compress Images Locally 100+ installs · 4.7★ · 4 shared tags A -
DropAvif Image Optimizer – Convert WebP & AVIF | Compress Images 80+ installs · 4.2★ · 4 shared tags B
Embed this report card
Drop a live Pulse card for Robin Image Optimizer – Unlimited Image Optimization, WebP & AVIF into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/robin-image-optimizer" width="480" height="300" style="border:0" loading="lazy" title="Robin Image Optimizer – Unlimited Image Optimization, WebP & AVIF — Plugin Pulse"></iframe> Robin Image Optimizer – Unlimited Image Optimization, WebP & AVIF: 100K+ active installs, 4.4★ (131 reviews). Plugin Pulse (WP Mayor), as of 2026-10-31. https://plugins.wpmayor.com/plugin/robin-image-optimizer
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