Mozilla Pdf js by mozilla
PDF Reader in JavaScript
About Mozilla Pdf js
From the project's README at github.com/mozilla/pdf.js. Lightly cleaned for readability; for the full source see the upstream repo.
PDF.js is a Portable Document Format (PDF) viewer that is built with HTML5.
PDF.js is community-driven and supported by Mozilla. Our goal is to create a general-purpose, web standards-based platform for parsing and rendering PDFs. Contributing
PDF.js is an open source project and always looking for more contributors. To get involved, visit: Issue Reporting Guide Code Contribution Guide Frequently Asked Questions Good Beginner Bugs Projects
Feel free to stop by our Matrix room for questions or guidance. Getting Started Online demo
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 53k | github.com/mozilla/pdf.js |
| GitHub forks | 11k | github.com/mozilla/pdf.js |
| NPM downloads (last month) | 16k | pdf.js |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 15.2 years | since Apr 2011 |
| Last commit | 2 months ago | May 3, 2026 |
| Releases shipped | 85 | last: 2 months ago |
| Security policy | SECURITY.md | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Security advisories
CVE-2024-4367. What people say on Hacker News
- Show HN: Bank Parser – Convert Chase/Boa PDFs to QuickBooks Excel (99% Accuracy)
- content_scripts won't load with pdf.js tabs (2018)
- Show HN: Veil – Dark mode PDFs without destroying images, runs in the browser
- Show HN: VMPrint is now a PDF generator with embeddable preview. 1.7MB ONLY
- Show HN: PDF to JPG converter that runs in the browser (no uploads)
Ready to self-host Mozilla Pdf js?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed Jun 21, 2026.