WordPress plugin comparison
PDF.js Viewer vs STL Viewer
At a glance
- PDF.js Viewer has more active installs: 20K+, against 100+ for STL Viewer.
- On a typical day, PDF.js Viewer is downloaded about 368 times, STL Viewer about 3.
- STL Viewer is rated higher: 5.0 out of 5 from 5 reviews, against 4.4 from 53 reviews.
- PDF.js Viewer was updated more recently: Oct 26, 2026, against Mar 15, 2015 for STL Viewer.
- PDF.js Viewer is tested with a newer WordPress: 7.0.8, against 4.1.42 for STL Viewer.
Line by line
PDF.js Viewer leads on 6 of 7 comparable lines.
| Metric |  PDF.js Viewer |  STL Viewer |
|---|---|---|
| Popular rank | #1,181 | #15,559 |
| Active installs | 20K+ | 100+ |
| Downloads, last 30 days | 14.7K | 47 |
| Rating | 4.4(53) | 5.0(5) |
| Support threads resolved | 0% | – |
| Tested up to | 7.0.8 | 4.1.42 |
| Search multiplier | ×0.89 | ×0.00 |
| Last release | 15 days ago | 11 years 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
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