mozilla/pdf.js

PDF Reader in JavaScript

Web & frontendJavaScript

1.2 Steady Magnitude out of 10. Star growth looks organic. Data as of September 18, 2026.

About the project

PDF.js is Mozilla's open-source JavaScript library and viewer that parses and renders PDF documents in the browser using HTML5, without plugins.

Useful for

Embed PDF viewing into a web app using the pdf.js library
Build a custom Chrome extension for opening PDFs from the project sources
Inspect a PDF file's internal structure with the built-in debugger

README summarized by DeepSeek V4.1 Flash. Details may be inaccurate.

Why it’s trending

4 stars so far today, about 5 expected by the end of the day.

Stars per day

Bars are daily stars, the line is the usual pace. Red marks spike days.

Numbers

Total stars: 53,896
Stars in a day: 5
Forks: 10,681
Issues and pull requests: 21,403
Watchers: 1,097
Language: JavaScript
License: Apache-2.0
Latest release: v6.3.289 · August 29, 2026
Created: April 26, 2011
Last push: September 18, 2026

Star trust

Growth looks organic: forks and discussion are in line with active projects, and stars arrive unevenly, the way people give them.

These are heuristics, not a verdict: we judge by the repository’s behavior, not by a list of stargazers.

Spotted in

September 17, 2026GitHub Trending JavaScript today: #12, +10 stars
September 16, 2026GitHub Trending JavaScript today: #12, +8 stars

README badge

Paste it into your README — the badge shows the current magnitude and links to this page.

[![Seismograph](https://gitnova.dev/badge/mozilla/pdf.js.svg?lang=en)](https://gitnova.dev/en/r/mozilla/pdf.js)

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