Smush – Image Optimization, Compression, Lazy Load, WebP & CDN v4.3.2
Compress and optimize images, enable lazy load, serve WebP & AVIF, and speed up your site with a global image CDN.
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- Audit coverage Not yet audited newest version pending
- On Plugin Auditor since Aug 31, 2026
- Last audited Aug 31, 2026
Compatibility & requirements
The PHP and WordPress versions this plugin needs, and how current its version support is.
- Requires PHP 7.4+
- Requires WordPress 6.4+
- Tested up to WP 7.1 WP 7.1.3 is current
- Version adoption 6.7% run the current version
Audit scores by category
125 checksHow this plugin scores across the six areas we audit, from security to accessibility.
- 72 Passed
- 39 Warnings
- 14 Failed
21 of 37 checks passed.
37 of 61 checks passed.
4 of 12 checks passed.
3 of 6 checks passed.
3 of 3 checks passed.
4 of 6 checks passed.
Code footprint
How much code ships in this plugin, and the file types that make it up.
ZIP file size
5.4 MB
16.6 MB unzipped
Total files
577
across all file types
Lines of PHP
71,152
in 367 files Large
File types
- PHP
- PNG
- JS
- OTHER
- Other
Top issues
The most important findings from the latest audit, ordered by severity.
- 124 Critical
- 231 High
- 309 Medium
- 329 Low
This is a preview of notable findings. Full file-level results, line numbers and code context are in the scan.
View full reportHow scores changed across versions
Across 30 audited versions of Smush – Image Optimization, Compression, Lazy Load, WebP & CDN, Accessibility improved the most (+34). The largest regression was in Compatibility (-17). The codebase grew 37% in size.
Audited 3.15.1 → 4.3.0 · 30 versions
How issues changed across versions
Findings by severity for each audited version, so you can see which issues were fixed over time.
Download momentum
How fast this plugin is being installed lately, and whether that pace is rising or slowing.
Last 7 days
427,971
downloads
Today
8,408
downloads
Week over week
+947%
vs previous week
Month over month
−41%
vs previous month
Download trend: Declining. Abandonment risk: None.
Version intelligence
93% of installs run an older version
≈ 932.7K+ sites on a lower-scoring version.
- Other
- v3.16
- v4.1
- v4.2
- v4.3
Maintenance & history
How actively this plugin is kept up, from its last update to its release history.
Last updated
This month
Aug 10, 2026
Actively maintainedRelease cadence
~ every 24 days
average between releases
Total releases
164
since Dec 2008 · 18 yrs
Contributors & developers
The people credited with building and maintaining this plugin.
Running Smush in Your Site?
Smush and its trademarks are used only to identify the plugin analyzed and remain the property of their owners. This is an independent Plugin Auditor audit, not affiliated with, sponsored by, or endorsed by the plugin's developer. Metadata may come from WordPress.org; scores, findings, classifications, and visualizations are independently generated by Plugin Auditor. Full disclaimer.