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PluginCanary

ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF

by ShortPixel · 300,000+ active installs · Checked 3 Nov 2026
Healthy3 Warnings

Healthy: vulnerability published 8 Oct 2026, fixed in 6.6.0.

83/ 100 Canary Score
Sub-scores for ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF
Ownership100
Maintenance100
Security60
Support70
Reputation85

How the score works

Active signals

Facts we detected, with links to the source.

  • WarningSEC-1Vulnerability published 8 Oct 2026, fixed in 6.6.0. Update to version 6.6.0 or later.8 Oct 2026Evidence
  • WarningSEC-1Vulnerability published 24 Sep 2026, fixed in 6.5.6. Update to version 6.5.6 or later.24 Sep 2026Evidence
  • WarningSEC-1Vulnerability published 17 Sep 2026, fixed in 6.5.6. Update to version 6.5.6 or later.17 Sep 2026Evidence
  • InfoSEC-37 vulnerabilities published in the last 24 months. Review this plugin.4 Nov 2026Evidence

Ownership timeline

Who commits to the plugin's code on wordpress.org, over time.

Committers and their active periods
ShortPixel5 Nov 2014 to 10 Jun 2020, 279 commits
petredobrescu9 Mar 2020 to 14 Oct 2026, 148 commits

2 committers recorded. No ownership changes recorded since 3 Nov 2026.

Maintenance

Last release
21 days ago
Releases, 24 months
34
Tested up to
7.1 current
Requires PHP
7.4 supported 8.2+
Releases per quarter for ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF
Q1 20243
Q2 20243
Q3 20241
Q4 20246
Q1 20256
Q2 20252
Q3 20256
Q4 20253
Q1 20263
Q2 20264
Q3 20263
Q4 20262

Last release 14 Oct 2026. Tested with WordPress 7.1 (current).

Support

100% of 2 support threads resolved in the last 2 months.

Security record

PublishedIssueCVSSAffectedFixed inDays to patch
8 Oct 2026ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF <= 6.5.6 - Authenticated (Contributor+) Stored Cross-Site Scripting6.4<= 6.5.66.6.00
24 Sep 2026ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF <= 6.5.5 - Authenticated (Subscriber+) PHP Object Injection7.5<= 6.5.56.5.60
17 Sep 2026ShortPixel Image Optimizer <= 6.5.5 - Authenticated (Author+) PHP Object Injection via Nested JSON Post Content8.8<= 6.5.56.5.60
20 Apr 2026ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF <= 6.4.3 - Authenticated (Author+) PHP Object Injection7.5<= 6.4.36.4.40
25 Mar 2026ShortPixel Image Optimizer <= 6.4.3 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment Title5.4<= 6.4.36.4.40
4 Feb 2026ShortPixel Image Optimizer <= 6.4.2 - Authenticated (Editor+) Arbitrary File Read via 'loadFile' Parameter4.9<= 6.4.26.4.30
17 Oct 2025ShortPixel Image Optimizer <= 6.3.4 - Authenticated (Contributor+) Settings Import/Export5.4<= 6.3.46.3.50
13 Oct 2024ShortPixel Image Optimizer <= 5.6.3 - Missing Authorization4.3<= 5.6.35.6.40
13 Oct 2024ShortPixel Image Optimizer <= 5.6.3 - Authenticated (Editor+) SQL Injection4.9<= 5.6.35.6.40
14 Sep 2023ShortPixel Image Optimizer <= 5.4.1 - Authenticated(Editor+) PHP Object Injection6.6< 5.4.25.4.21
2 Jun 2022ShortPixel Image Optimizer <= 4.22.9 - Reflected Cross-Site Scripting6.1<= 4.22.94.22.100

Source: Wordfence Intelligence.

Reputation

Average rating per quarter for ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF
Q1 20265.0
Q2 20264.4
Q3 20265.0
Q4 20265.0

Average rating stayed at 5.0 between Q1 2026 and Q4 2026.

Rating distribution
5 star714
4 star15
3 star13
2 star13
1 star75
Latest low reviews

Momentum

300,000+ active installs. History builds with each weekly snapshot.

Weekly downloads, last 27 weeks
Weekly downloads for ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF
4 May 202628,111
11 May 202631,734
18 May 202630,318
25 May 202617,595
1 Jun 2026127,056
8 Jun 202639,313
15 Jun 202621,903
22 Jun 2026120,041
29 Jun 202644,636
6 Jul 2026149,657
13 Jul 202631,084
20 Jul 2026138,637
27 Jul 202634,314
3 Aug 202631,406
10 Aug 202616,451
17 Aug 202613,999
24 Aug 202613,296
31 Aug 202611,850
7 Sep 2026130,757
14 Sep 202651,751
21 Sep 202627,009
28 Sep 202616,208
5 Oct 2026148,064
12 Oct 2026145,203
19 Oct 202640,280
26 Oct 202631,337
2 Nov 20263,182

Weekly downloads over the last 4 weeks are 1% below the 27-week average.

Healthier alternatives

Same category, higher Canary Score. Never sponsored.

Modern Image FormatsScore 93 · 100,000+CompressX - AVIF & WebP Converter, Media ReplacementScore 93 · 40,000+Cimo - Free Instant Image Optimizer & WebP ConverterScore 93 · 10,000+Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIFScore 92 · 900,000+reSmush.it : The original free image compressor and optimizer pluginScore 92 · 100,000+

Facts

Version6.6.1
AuthorShortPixel
Added5 Nov 2014
Last updated14 Oct 2026
Active installs300,000+
Requires WordPress5.9.0
Tested up to7.1.4
Requires PHP7.4
CategoryPerformance & Optimization > Image Optimization & Compression
Tagsresize, convert webp, compress images, optimize images, image optimization

Other plugins by this author: Enable Media Replace, reSmush.it : The original free image compressor and optimizer plugin, Resize Image After Upload, reGenerate Thumbnails Advanced, WP SVG Images, ShortPixel Adaptive Images - WebP, AVIF, CDN, Image Optimization, FastPixel Cache - Optimize Page Speed: Compress Images, Minify, Clean Database & CDN, ShortPixel AI Alt Text Generator

Questions

Is ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF still maintained?

ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF was last updated on 14 Oct 2026. Its Canary status is Healthy.

Is ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF safe?

ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF has no open unpatched vulnerabilities on record. 7 vulnerabilities were published in the last 24 months. Its Canary status is Healthy.

Who owns ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF?

The wordpress.org author is ShortPixel. Recent committers: petredobrescu, ShortPixel, plugin-master. We have recorded no ownership change.

What can I use instead of ShortPixel Image Optimizer - Optimize Images, Convert WebP & AVIF?

Plugins in the same category with a higher Canary Score: Modern Image Formats, CompressX - AVIF & WebP Converter, Media Replacement, Cimo - Free Instant Image Optimizer & WebP Converter, Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIF, reSmush.it : The original free image compressor and optimizer plugin.

Data: wordpress.org Plugins API, plugins SVN and Trac, wordpress.org reviews, Wordfence Intelligence.Plugin data refreshed 3 Nov 2026.Report a data issue