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Dev tools · April 24, 2020

PDF.js Express

Out-of-the-box annotation, PDF form fill, and signing.

PDF.js Express launched on April 24, 2020 with 4 votes, #2,018 of 5,003 launches that month. The site was still online in September 2026, 6 years on.

What it does

PDF.js Express is a commercial PDF web viewer that wraps around the PDF.js open-source rendering engine. It offers developers a way to quickly add annotation, e-signatures, and form filling to their PDF viewer.

Fast & easy PDF.js Viewer integration with PDF.js Express. Add annotations, fill forms & sign PDFs in a web browser. Fully supported - download & try it free

Our SDK is simple and headache-free. Integrating a fully featured PDF viewer in your project takes just a few steps. PDF.js Express does not rely on any specific framework, so it can easily be plugged into any existing web project. Get 26 pre-built annotations for your PDF.js viewer -- including text highlighting, free-hand draw, comments, shapes, and more. Create custom annotations for unique workflows. Let users fill and submit PDF forms in your viewer. Sign PDFs using hand-drawn annotations, and save signatures for signing multiple pages. Increase adoption by customizing the open source UI -- simplify & remove features, create unique measurement icons and adjust colors to match your…from pdfjs.express

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