Image Optimization – Compress Images and Convert to WebP or AVIF v1.7.6
Automatically resize, optimize, and convert images to WebP and AVIF. Compress images in bulk or on upload to boost your WordPress site performance.
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- Audit coverage Up to date 30 versions audited
- 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 6.7+
- Tested up to WP 7.0 WP 7.1.3 is current
- Version adoption 75% run the current version
Audit scores by category
125 checksHow this plugin scores across the six areas we audit, from security to accessibility.
- 85 Passed
- 33 Warnings
- 7 Failed
25 of 37 checks passed.
42 of 61 checks passed.
8 of 12 checks passed.
4 of 6 checks passed.
1 of 3 checks passed.
5 of 6 checks passed.
Code footprint
How much code ships in this plugin, and the file types that make it up.
ZIP file size
4.8 MB
9.9 MB unzipped
Total files
658
across all file types
Lines of PHP
14,882
in 161 files Large
File types
- PHP
- JS
- WOFF2
- WOFF
- Other
Top issues
The most important findings from the latest audit, ordered by severity.
- 0 Critical
- 105 High
- 104 Medium
- 269 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 Image Optimization – Compress Images and Convert to WebP or AVIF, Performance improved the most (+9). No category regressed over this span. The codebase grew 94% in size.
Audited 1.0.1 → 1.7.6 · 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
39,215
downloads
Today
3,905
downloads
Week over week
−14%
vs previous week
Month over month
−68%
vs previous month
Download trend: Declining. Abandonment risk: None.
Version intelligence
25% of installs run an older version
≈ 250.3K+ sites on a lower-scoring version.
- Other
- v1.6
- v1.7
Maintenance & history
How actively this plugin is kept up, from its last update to its release history.
Last updated
2 mo ago
Jul 7, 2026
Actively maintainedRelease cadence
~ every 22 days
average between releases
Total releases
31
since Jan 2024 · 2 yrs
Contributors & developers
The people credited with building and maintaining this plugin.
Running Image Optimization in Your Site?
Image Optimization 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.