WordPress plugin comparison
Flexible PDF vs PDF.js Viewer
At a glance
- PDF.js Viewer has more active installs: 20K+, against 20+ for Flexible PDF.
- On a typical day, PDF.js Viewer is downloaded about 368 times, Flexible PDF about 1.
- Flexible PDF is rated higher: 5.0 out of 5 from 1 review, against 4.4 from 53 reviews.
- PDF.js Viewer was updated more recently: Oct 26, 2026, against Mar 17, 2018 for Flexible PDF.
- PDF.js Viewer is tested with a newer WordPress: 7.0.8, against 4.8.34 for Flexible PDF.
- PDF.js Viewer has been around longer: since 2013, against 2017 for Flexible PDF.
Line by line
PDF.js Viewer leads on 6 of 7 comparable lines.
| Metric |  Flexible PDF |  PDF.js Viewer |
|---|---|---|
| Popular rank | #26,530 | #1,181 |
| Active installs | 20+ | 20K+ |
| Downloads, last 30 days | 25 | 14.8K |
| Rating | 5.0(1) | 4.4(53) |
| Support threads resolved | – | 0% |
| Tested up to | 4.8.34 | 7.0.8 |
| Search multiplier | ×0.00 | ×0.89 |
| Last release | 8 years ago | 14 days ago |
| Requires PHP | – | 7.4 |
From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.
Tags they share
More comparisons
- Flexible PDF vs Save as PDF Plugin by PDFCrowd
- Flexible PDF vs PDF Embedder
- Flexible PDF vs PDF Invoices & Packing Slips for WooCommerce
- Flexible PDF vs Print, PDF & Email by PrintFriendly
- PDF.js Viewer vs Embed PDF Viewer
- PDF.js Viewer vs PDF Viewer Block for Gutenberg
- PDF.js Viewer vs PDF viewer for Elementor & Gutenberg
- PDF.js Viewer vs Vanilla PDF Embed
Is one of these yours?
Track your plugin against its rivals every day: rank, installs, downloads, ratings and their releases, with alerts when anything moves.
Start free