All in One SEO – Powerful SEO Plugin to… vs Siteimprove Accessibility (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
All in One SEO – Powerful SEO Plugin to…
3.0M+ active installs
Free
Siteimprove Accessibility
20 active installs
Free
Quick Verdict
As of April 2026, All in One SEO – Powerful SEO Plugin to… has a higher user rating (4.7/5 from 5,075 reviews) and leads in active installations (3.0M+ vs 20). Both are free WordPress plugins. All in One SEO – Powerful SEO Plugin to… has accumulated 200M+ total downloads while Siteimprove Accessibility has 675.
Detailed Comparison
| Metric | All in One SEO – Powerful SEO Plugin to… | Siteimprove Accessibility | |
|---|---|---|---|
| Rating | 4.7/5 | ◄ | N/A |
| Total Reviews | 5,075 | ◄ | 0 |
| Active Installs | 3.0M+ | ◄ | 20 |
| Total Downloads | 200M+ | ◄ | 675 |
| Support Resolution | 100% | N/A | |
| Last Updated | 3 weeks ago | ◄ | 3 months ago |
| First Released | 2007 | 2025 | |
| Age | 19 years | 1 year | |
| WP Requires | 5.7+ | 6.7+ | |
| PHP Requires | 7.2+ | 8.0+ | |
| Business Model | Free | Free | |
| Latest Version | 4.9.5.1 | 1.0.2 |
Rating Breakdown
All in One SEO – Powerful SEO Plugin to…
Siteimprove Accessibility
Download Trends
Recent Reviews
All in One SEO – Powerful SEO Plugin to… Reviews
Useful but Limited
All in One SEO did help me with basic SEO work, so tnkz for that. But some parts felt less smooth than I expected, and I still had to fix things on my own. 3 star.
Een prettige SEO plugin om mee te werken
Een zeer prettige SEO plugin om mee te werken. Laat direct zien wat je kunt verbeteren en geeft ook een score. Ook de koppeling met AI voor het genereren van een meta beschrijving is erg prettig. Al m
Une aide appréciable
Je commence juste à l’utiliser mais cette extension est déjà d’une grande aide. Je me demande juste si elle est toujours bien à jour avec les cahiers des charges SEO/GEO. On verra bien au fur et à mes
Siteimprove Accessibility Reviews
No reviews yet
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Frequently Asked Questions
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.