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SiteOrigin CSS v1.6.6

Powerful, simple CSS editing for WordPress. Visual controls & real-time previews for effortless site customization.

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

  • Audit coverage Up to date 30 versions audited
  • On Plugin Auditor since Sep 4, 2026
  • Last audited Sep 4, 2026

Compatibility & requirements

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

  • Requires PHP 7.0.0+
  • Requires WordPress 3.9+
  • Tested up to WP 7.0 WP 7.1.3 is current
  • Version adoption 70% run the current version

Audit scores by category

125 checks

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

  • 88 Passed
  • 31 Warnings
  • 6 Failed
Security 78/100
Needs Improvement

29 of 37 checks passed.

Code Quality 72/100
Needs Improvement

44 of 61 checks passed.

Performance 58/100
Needs Improvement

7 of 12 checks passed.

Compatibility 83/100
Good

5 of 6 checks passed.

Privacy 33/100
Poor

1 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

853.6 KB

2.6 MB unzipped

Total files

156

across all file types

Lines of PHP

6,483

in 13 files Medium

File types

  • JS
  • CSS
  • PHP
  • MD
  • Other

Top issues

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

  • 0 Critical
  • 64 High
  • 66 Medium
  • 95 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 SiteOrigin CSS, The largest regression was in Accessibility (-17). The codebase grew 320% in size.

Audited 1.2.11 → 1.6.6 · 30 versions

0 50 100 1.2.11 1.4.3 1.5.9 1.6.6

How issues changed across versions

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

0 135 270 1.2.11 1.4.3 1.5.9 1.6.6

Download momentum

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

Last 7 days

3,411

downloads

Today

476

downloads

Week over week

+3%

vs previous week

Month over month

−19%

vs previous month

Download trend: Declining. Abandonment risk: Low.

Version intelligence

30% of installs run an older version

≈ 30.1K+ sites on a lower-scoring version.

  • Other
  • v1.2
  • v1.5
  • v1.6

Ratings

153 ratings on WordPress.org

  • 5 145
  • 4 4
  • 3 1
  • 2 0
  • 1 3

Maintenance & history

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

Last updated

3 mo ago

May 21, 2026

Actively maintained

Release cadence

~ every 42 days

average between releases

Total releases

56

since Jun 2015 · 11 yrs

Contributors & developers

The people credited with building and maintaining this plugin.

Running SiteOrigin CSS in Your Site?

Our latest audit of SiteOrigin CSS v1.6.6 flagged 225 issues. Scan your own copy to see each one with its exact file, line number, and a recommended fix.

SiteOrigin CSS 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.