WebP Express vs Slimbox (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Quick Verdict
As of April 2026, Slimbox has a higher user rating (5/5 from 1 reviews) while WebP Express leads in active installations (300K+ vs 700). Both are free WordPress plugins. WebP Express has accumulated 4.1M+ total downloads while Slimbox has 56K+.
Detailed Comparison
| Metric | WebP Express | Slimbox | |
|---|---|---|---|
| Rating | 4.4/5 | ► | 5/5 |
| Total Reviews | 160 | ◄ | 1 |
| Active Installs | 300K+ | ◄ | 700 |
| Total Downloads | 4.1M+ | ◄ | 56K+ |
| Support Resolution | 0% | N/A | |
| Last Updated | 2 months ago | ◄ | 9 years ago |
| First Released | 2018 | 2009 | |
| Age | 8 years | 17 years | |
| WP Requires | 4.0+ | 2.7+ | |
| PHP Requires | 5.6+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 0.25.14 | 1.0.8 |
Rating Breakdown
WebP Express
Slimbox
Download Trends
Recent Reviews
WebP Express Reviews
Good plugin
Good plugin. Thanks for the update.
Excelent and good free plugin
Excelent and good free plugin for convert images jpg/png a webp
Amazing
This stuff is the real deal: just an app that works, no hassling like premium versions or special features. Thank you.
Slimbox Reviews
No reviews yet
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Frequently Asked Questions
Is WebP Express or Slimbox more popular?
Which has better ratings — WebP Express or Slimbox?
Are WebP Express and Slimbox free?
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Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.