PDF.js Viewer v3.1.1
Incorporate Mozilla’s PDF.js viewer into your pages and posts via a Gutenberg block or a simple shortcode. PDF.js is a javascript library for displaying pdf pages within browsers. Features: Gute...
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- Audit coverage Up to date 30 versions audited
- On Plugin Auditor since Sep 12, 2026
- Last audited Sep 12, 2026
Compatibility & requirements
The PHP and WordPress versions this plugin needs, and how current its version support is.
- Requires PHP 7.4+
- Requires WordPress 5.0+
- Tested up to WP 7.0.4 WP 7.1.3 is current
- Version adoption 53% run the current version
Audit scores by category
125 checksHow this plugin scores across the six areas we audit, from security to accessibility.
- 100 Passed
- 18 Warnings
- 7 Failed
27 of 37 checks passed.
51 of 61 checks passed.
9 of 12 checks passed.
5 of 6 checks passed.
3 of 3 checks passed.
5 of 6 checks passed.
Code footprint
How much code ships in this plugin, and the file types that make it up.
ZIP file size
10.5 MB
39.4 MB unzipped
Total files
457
across all file types
Lines of PHP
2,136
in 16 files Small
File types
- BCMAP
- FTL
- SVG
- OTHER
- Other
Top issues
The most important findings from the latest audit, ordered by severity.
- 0 Critical
- 14 High
- 19 Medium
- 40 Low
This is a preview of notable findings. Full file-level results, line numbers and code context are in the scan.
View full reportHow scores changed across versions
Across 30 audited versions of PDF.js Viewer, The largest regression was in Security (-11). The codebase grew 266% in size.
Audited 1.5.3 → 3.1.1 · 30 versions
How issues changed across versions
Findings by severity for each audited version, so you can see which issues were fixed over time.
Download momentum
How fast this plugin is being installed lately, and whether that pace is rising or slowing.
Last 7 days
732
downloads
Today
123
downloads
Week over week
−7%
vs previous week
Month over month
−7%
vs previous month
Download trend: Declining. Abandonment risk: Low.
Version intelligence
47% of installs run an older version
≈ 9.4K+ sites on a lower-scoring version.
- Other
- v2.1
- v2.2
- v3.0
- v3.1
Maintenance & history
How actively this plugin is kept up, from its last update to its release history.
Last updated
4 mo ago
Apr 21, 2026
Release cadence
~ every 11 days
average between releases
Total releases
43
since Jan 2014 · 12 yrs
Contributors & developers
The people credited with building and maintaining this plugin.
Running PDF.js Viewer in Your Site?
PDF.js Viewer and its trademarks are used only to identify the plugin analyzed and remain the property of their owners. This is an independent Plugin Auditor audit, not affiliated with, sponsored by, or endorsed by the plugin's developer. Metadata may come from WordPress.org; scores, findings, classifications, and visualizations are independently generated by Plugin Auditor. Full disclaimer.