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
Does a similar job
all alternatives →- PJPdf.js Express – PDF annotation, e-signatures, and form filling2020 · ▲334
Hi HN, Nick here. We're super excited to officially launch PDF.js Express [1]. PDF.js Express wraps a modern React UI around the PDF.js rendering engine to enable PDF annotation, form filling, and signing inside your web app. We've also made some improvements to PDF.js text search, and taken a different approach to how the viewer uses the PDF.js rendering API, resulting in sharp graphics at any zoom magnification [2]. Based on our research, more than 70% of those who try to implement these features on top of PDF.js find it too difficult or time-intensive [3]. For those who are successful,…

I built a free alternative to Adobe Acrobat PDF viewer2025 · github.com · ▲357I built EmbedPDF: an MIT-licensed, open-source PDF viewer that aims to match all of Adobe Acrobat’s paid features… for free. Already working: - Annotations (highlight, sticky notes, free text, ink) - True redaction (content actually removed) - Search, text selection, zoom, rotation - Runs fully in the browser, no server needed - Drop-in SDK for React, Vue, Preact, vanilla JS Why? Acrobat is heavy, closed, and pricey. I wanted something lightweight, hackable, and embeddable anywhere. Demo: https://app.embedpdf.com/ Website: https://www.embedpdf.com/ GitHub:…


Fill and sign PDF from any website with a single line of code2023 · simplepdf.github.io · ▲16Enable your website visitors to fill, annotate, merge and edit PDF files without leaving your website. Use the iframe, Javascript script or React component.
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