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Autoptimize v3.1.15.1

Autoptimize speeds up your website by optimizing JS, CSS, images (incl. lazy-load), HTML and Google Fonts, asyncing JS, removing emoji cruft and more.

Plugin Auditor is an independent service and is not affiliated with, endorsed by, or sponsored by Autoptimize or its developer. Disclaimer.

  • Audit coverage Up to date 30 versions audited
  • On Plugin Auditor since Sep 1, 2026
  • Last audited Sep 1, 2026

Compatibility & requirements

The PHP and WordPress versions this plugin needs, and how current its version support is.

  • Requires PHP 7.1+
  • Requires WordPress 5.3+
  • Tested up to WP 6.9 WP 7.1.3 is current
  • Version adoption 87% run the current version

Audit scores by category

125 checks

How this plugin scores across the six areas we audit, from security to accessibility.

  • 77 Passed
  • 36 Warnings
  • 12 Failed
Security 57/100
Needs Improvement

21 of 37 checks passed.

Code Quality 66/100
Needs Improvement

40 of 61 checks passed.

Performance 67/100
Needs Improvement

8 of 12 checks passed.

Compatibility 50/100
Needs Improvement

3 of 6 checks passed.

Privacy 100/100
Excellent

3 of 3 checks passed.

Accessibility 33/100
Poor

2 of 6 checks passed.

Code footprint

How much code ships in this plugin, and the file types that make it up.

View in detail

ZIP file size

259.5 KB

910.9 KB unzipped

Total files

80

across all file types

Lines of PHP

17,842

in 46 files Medium

File types

  • PHP
  • JS
  • CSS
  • HTML
  • Other

Top issues

The most important findings from the latest audit, ordered by severity.

  • 0 Critical
  • 264 High
  • 189 Medium
  • 165 Low

This is a preview of notable findings. Full file-level results, line numbers and code context are in the scan.

View full report

How scores changed across versions

Across 30 audited versions of Autoptimize, The largest regression was in Code Quality (-1). The codebase grew 12% in size.

Audited 2.9.1 → 3.1.15.1 · 30 versions

0 50 100 2.9.1 3.0.4 3.1.8 3.1.15.1

How issues changed across versions

Findings by severity for each audited version, so you can see which issues were fixed over time.

0 453 905 2.9.1 3.0.4 3.1.8 3.1.15.1

Download momentum

How fast this plugin is being installed lately, and whether that pace is rising or slowing.

Last 7 days

17,608

downloads

Today

1,612

downloads

Week over week

−22%

vs previous week

Month over month

+3%

vs previous month

Download trend: Steady. Abandonment risk: Low.

Version intelligence

13% of installs run an older version

≈ 106K+ sites on a lower-scoring version.

  • Other
  • v3.1

Ratings

1,428 ratings on WordPress.org

  • 5 1,289
  • 4 34
  • 3 21
  • 2 20
  • 1 64

Support: 1 / 4 threads resolved in the last two months

Maintenance & history

How actively this plugin is kept up, from its last update to its release history.

Last updated

This month

Apr 4, 2026

Actively maintained

Release cadence

~ every 31 days

average between releases

Total releases

106

since Jul 2009 · 17 yrs

Contributors & developers

The people credited with building and maintaining this plugin.

Running Autoptimize in Your Site?

Our latest audit of Autoptimize v3.1.15.1 flagged 618 issues. Scan your own copy to see each one with its exact file, line number, and a recommended fix.

Autoptimize 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.