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ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization

by ShortPixel · Performance

Also makes 8 other plugins · 1.2M+ installs across the portfolio →

Start serving properly sized, smart cropped & optimized images, plus CSS, JS and fonts from our CDN with a click; Automatic AVIF & WebP support.

How scoring works →
90 Health · A
Maintenance 100/100
Rating quality 94/100
Support 70/100

90 health vs 67 average across 1,075 Performance plugins

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.

98 / 100

Excellent listing optimization

Well tuned across the board

Update recency 100/100
WP compatibility 100/100
Rating quality 92/100
Listing tuning 100/100

Daily downloads

Since 2022-10-05 · 1,424 days · wp.org + Plugin Pulse archive

+124% vs prior 30d
0Downloads · Aug 26

30-day downloads

Rolling 30-day volume · peaks are release surges

14.2K

now · peak 41.6K

9.7K30d downloads · Aug 26

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

ShortPixel Adaptive · #1799 you EWWW Image Optimizer · #61 Optimole · #254 Robin Image Optimize · #437

Rating trend

Star average over time · dips mark rough releases

4.8Stars · Aug 26

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.

970per 1k installs · Aug 26

Release cadence

Actively maintained
from wp.org release tags

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

5

releases in the last 12 months

2mo ago

latest release · v3.11.5

129

tagged releases on record

Recent releases

3.11.5 · 2mo ago3.11.4 · 3mo ago3.11.3 · 4mo ago3.11.2 · 5mo ago3.11.1 · 7mo ago3.11.0 · 1.1y ago3.10.5 · 1.1y ago3.10.4 · 1.2y ago3.10.3 · 1.4y ago3.10.2 · 1.4y ago3.10.1 · 1.4y ago3.10.0 · 1.7y ago3.9.4 · 1.8y ago3.9.3 · 2.1y ago

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin · 74% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v3.11 74%
v3.10 8.3%
Older / other versions 18%

Estimated active installs

The public count shows “10K+”. Our estimate pins where the real number sits.

tracked estimate
10K–20K ≈19K

Refined from the date this plugin crossed into its current band.

Install history · since 2019-08-15 · 1,438 observations

10KInstalls · Aug 26

Estimated value

What this plugin might earn a year, and what it might sell for. Modeled from public signals; we don't see anyone's books.

Est. annual revenue

N/A

Est. acquisition value

N/A

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price. The recent download trend is too spiky to read.

Details

Version
3.11.6
Last updated
8d ago
Added
2018-12-09 · 7 yrs old
Requires WP
4.7
Tested up to
7.1
Requires PHP
5.6.40

Recent reviews

All reviews on wp.org ↗
  1. splet99
    2mo ago

    could not have wished for something different….

    Read on wp.org ↗
  2. spinquads
    7mo ago

    As the title says, Pagespeed Insights gave a score of 92 on mobile and 99 to 100 on desktop with no visible loss of quality on the web page. What I also like is the very reasonable one time pricing and the fast CDN. Shortpixel also gives 100 free credits a month!

    Read on wp.org ↗
  3. jeremywardkcc
    10mo ago

    I’ve recently added SPIO across all our WordPress sites. (I work for a NFP managing 10 of their sites.) I’m impressed by ShortPixel’s compression and performance. Adrian and the team have offered great support. And they’ve offered discounts/bonus credits for us as a NFP organisation!

    Read on wp.org ↗
  4. Tamhas
    1.5y ago

    Not here to diss you guys. Your image optimiser plugin is great!! But this one, it didn’t speed up my site, but rather made it super slow on first load. Maybe my error even. BUT when I turned off plugin and checked the inbuilt delete DB tables option, the site was still slow. I had to download WP Optimize and delete the inactive DB tables of the ShortPixel Adaptive Images plugin, then the site was instantly fast again. Probably a rare problem, but if this happens to you, that’s the fix.

    Read on wp.org ↗
  5. kolicoski
    1.5y ago

    Absolutely fantastic plugin! Support is also very helpful.

    Read on wp.org ↗
  6. lprwebdude
    1.6y ago

    No muss. No fuss. No twisting knobs. ShortPixel just works. Great product and support.

    Read on wp.org ↗
  7. sosfactory
    1.8y ago

    After A LOT of research on my side (support was responsive but unfortunately not helpful), I have found that cdn.shortpixel.ai is blocked by Google Search Console. How it affects your SEO may be subject to discussion, but definitively, the facts I’m going to expose are not a good sign. I have read the documentation regarding indexing, and while I understand the theory, the truth is Google disagrees: kb.shortpixel.com/knowledge-base/article/will-my-sites-images-be-indexed-as-coming-from-shortpixel/ Signs that Google disagrees: In Search Console>live test >Screenshot diplays broken images (all of them). “More info” tab on url inspector live shows cdn.shortpixel. ai urls not being loaded. “Other error” Even my favicon is blocked on the results in Google search images. I can’t affirm that my Google Images traffic has dropped because of this plugin, but the truth is that my Google Image traffic has decreased dramatically since I activated it a few months ago. A dramatic amount of images have been deindexed since I installed the CDN. The images that are currently indexed contain a link to the original image on my server (featured images on posts or pages that link to the original image via meta tags, product images, or widgets that, on click, serve the original image from my own server). So my guess is that Google is crawling the urls of the original image. Dramatic traffic drop since I’m using short-pixel CDN. Few posts lately point to the same issue. How did I arrive at the conclusion that Shortpixel AI is the problem? I have tried deactivating all plugins but Shortpixel. Problem persist. I deactivated my theme and activated the WordPress default theme. Problem persist. Deactivating Cloudflare. Problem persist. I deactivated all Hotlink protection. Problem persist. I activated the new AI engine and the problem persist. Only when I deactivate Shortpixel, magic… it works! I use my theme + Cloudflare + Hotlink protection and a bunch of plugins, and the Search Console url inspector loads all the resources; there are no broken images in the screenshot, and the favicon appears on Google Images results. Support apparently has no idea about what is going on, even when there are actually a couple of recent threads pointing to the same problem. So up to date I assume there is NO SOLUTION. MY SOLUTION: I had another website that uses a different plugin developed by another company that also uses Shortpixel server, and it has the ability to serve images via CDN. Just by chance, I decided to switch the license to this website, and I found out that everything works fine in Search Console!!! This plugin uses sp-ao.shortpixel.ai server and it seems Google likes it while Shortpixel AI uses cdn.shortpixel.ai and Google doesn’t, for reasons that I don’t know and that I won’t explore so support can do some work 😉I took the time to write this long post for you, that, like me, has probably been hurt in your SEO (I’m an illustrator, so imagine how much damage it may have caused). I hope those insights point you in the right direction. All the best!Sergio This topic was modified 1 year, 8 months ago by sosfactory. This topic was modified 1 year, 8 months ago by sosfactory. This topic was modified 1 year, 8 months ago by sosfactory.

    Read on wp.org ↗
  8. sarahalexander
    2.0y ago

    I have just found shortpixel image optimization and I am so glad! The support team went out of their way to help me understand how to best optimize my images and answered all of my questions with great detail and patience 😀 Super grateful!

    Read on wp.org ↗

Latest updates

via wp.org changelog

Recent releases and news for this plugin

  1. Version 3.11.5 🛡️ The Security Hardening Update Release Date: June 19, 2026 🔒 Security Fix Arbitrary File Deletion Vulnerability Patched: Fixed an Arbitrary File Deletion vulnerability, responsibly and safely disclosed by the PatchSt 3.11.5
  2. Version 3.11.4 🔐 The Hardened Settings Update Release Date: May 18, 2026 🛡️ Security Improvements Additional XSS Protection: Escaped another set of settings fields to further harden the plugin against potential XSS vulnerabilities. A 3.11.4
  3. Version 3.11.3 🔒 The Secure Exclusions Update Release Date: May 12, 2026 🛡️ Security Fix Security improvements: Improved auth/nonce validation on excluded selectors and properly escaped exclusions to prevent a potential stored Cross- 3.11.3
  4. Version 3.11.2 🛡️ The Compatibility & Security Update Release Date: March 19, 2026 🛠️ Fixes open_basedir Warning Fix: Resolved cases where open_basedir restrictions triggered PHP warnings, including when using the “Replace in CSS” op 3.11.2
  5. Version 3.11.1 🔧 The Compatibility & CDN Sync Update Release Date: September 24, 2025 🛠️ Fixes & Improvements PHP 8.4 Compatibility: Fixed a deprecation warning that appeared when running the plugin on PHP 8.4, ensuring smooth operat 3.11.1
  6. Version 3.11.0 🌩️ The S3 & Speed Boost Update Release Date: August 6, 2025 ✨ New Features Amazon S3 Integration: Images stored on Amazon S3 can now be seamlessly served through the ShortPixel CDN — faster delivery, no matter where you 3.11.0

Known vulnerabilities

via Wordfence Intelligence

11 disclosed vulnerabilities on record for this plugin, all fixed in the current version. Sites on older versions stay exposed until they update.

  1. 2026-08-15 CVE-2026-15345 Missing Authorization Affects <= 3.11.5 Patched in 3.11.6
  2. 2026-06-29 CVE-2026-57342 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 3.11.3 Patched in 3.11.4
  3. 2026-06-25 CVE-2026-56066 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') Affects <= 3.11.4 Patched in 3.11.5
  4. 2025-08-01 CVE-2025-6626 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 3.10.4 Patched in 3.10.5
  5. 2025-04-01 CVE-2025-30853 Missing Authorization Affects <= 3.10.0 Patched in 3.10.1
  6. 2024-05-10 CVE-2024-35172 Server-Side Request Forgery (SSRF) Affects <= 3.8.3 Patched in 3.8.4
  7. 2024-05-09 CVE-2024-4689 Cross-Site Request Forgery (CSRF) Affects <= 3.8.3 Patched in 3.8.4
  8. 2024-04-02 CVE-2024-31230 Missing Authorization Affects <= 3.8.2 Patched in 3.8.3
  9. 2023-05-08 CVE-2023-32512 Cross-Site Request Forgery (CSRF) Affects < 3.7.2 Patched in 3.7.2
  10. 2023-02-02 CVE-2023-0334 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 3.6.1 Patched in 3.6.2
  11. 2022-04-25 CVE-2022-29417 Improper Access Control Affects <= 3.3.1 Patched in 3.4.0

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 Hive

Automated install-time checks, tested on PHP 8.1.12 · WP 7.0

Low memory footprint
Low page-speed impact
Runs on latest PHP + WP
No PHP errors
No JS errors
Activates cleanly
No resource errors
No external HTTP errors
Optimized database use
Frequently updated

Languages

via translate.wordpress.org

Translated into 6 languages, 5 at 90% or more

Romanian 97%
Dutch 96%
Spanish (Chile) 95%
Spanish (Spain) 93%
Russian 92%
Czech 3%

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

  1. 2024-05-29 20K+ → 10K+ down

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).

Compare head to head →

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Preview card ↗

ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization: 10K+ active installs, 4.8★ (144 reviews). Plugin Pulse (WP Mayor), as of 2026-08-28. https://plugins.wpmayor.com/plugin/shortpixel-adaptive-images