Advanced iFrame vs PDF.js Viewer (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Quick Verdict
As of April 2026, PDF.js Viewer has a higher user rating (4.4/5 from 53 reviews) while Advanced iFrame leads in active installations (40K+ vs 20K+). Both are free WordPress plugins. Advanced iFrame has accumulated 2.4M+ total downloads while PDF.js Viewer has 407K+. Advanced iFrame has a higher support resolution rate (100% vs 50%).
Detailed Comparison
| Metric | Advanced iFrame | PDF.js Viewer | |
|---|---|---|---|
| Rating | 4.3/5 | ► | 4.4/5 |
| Total Reviews | 55 | ◄ | 53 |
| Active Installs | 40K+ | ◄ | 20K+ |
| Total Downloads | 2.4M+ | ◄ | 407K+ |
| Support Resolution | 100% | ◄ | 50% |
| Last Updated | 1 month ago | ► | 1 week ago |
| First Released | 2011 | 2013 | |
| Age | 15 years | 13 years | |
| WP Requires | 5.5+ | 5.0+ | |
| PHP Requires | 7.4+ | 7.4+ | |
| Business Model | Free | Free | |
| Latest Version | 2026.0 | 3.0.4 |
Rating Breakdown
Advanced iFrame
PDF.js Viewer
Download Trends
Over the past 30 days, Advanced iFrame averaged approximately 1,018 daily downloads while PDF.js Viewer averaged 693.
Recent Reviews
Advanced iFrame Reviews
Horrible, invasive, clunky
What a horrible, clunky, and invasive plugin. Every wp-admin page refresh I get an admin notice that takes up half my screen and after a few seconds gets smaller with a weird animation. To get this no
Just what we needed
Fast to install and grasp. Feature rich = future proof. We’re happy.
Excellent and can’t do without
Used extensively with other apps in domain without hiccup. Been using for years and will continue to do so.
PDF.js Viewer Reviews
Never failed
I’ve been using for years and never failed. Simple to use and does the job.
Excellent PDF EMbedder
I have been usiong a paid pdf plugin but it’s been months now with a bad fault so i tried this – perfect! Thank you very much.
Great Support
I was impressed with the level of support provided with the recent issue where the plugin stopped displaying due to Mozilla’s PDFjs, and they started using mjs files. Thank you for an excellent plu
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Frequently Asked Questions
Is Advanced iFrame or PDF.js Viewer more popular?
Which has better ratings — Advanced iFrame or PDF.js Viewer?
Are Advanced iFrame and PDF.js Viewer free?
Which plugin has better support — Advanced iFrame or PDF.js Viewer?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.