Firefox PDF Viewer (PDF.js) Alternatives

Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.

Okular is a universal document viewer based developed by KDE.

As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more

Try for free paid Free Trial $15.0 / Monthly (125+ Documents)

Foxit Reader is a free and light-weight multi-platform PDF document viewer.

MuPDF is a lightweight PDF and XPS viewer.

Open Source

Evince is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS...

PSPDFKit is the best framework for working with PDF files. Our SDK provides first-rate PDF solutions for your application with features like annotating, signing, and form filling. We power successful projects for businesses across the globe.

Adobe Acrobat Reader is a free tool for viewing documents that have been stored in Adobe's Portable Document Format (PDF).

Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.

PDF components and tools.

Try easy-to-use PDF tools that keep your documents safe. Work with your important files across all platforms and devices with the ultimate all-in-one document solution. Your productivity lives at Xodo!

paid Free Trial $12.99 / Monthly (Xodo Pro subscription, 1 user, all platforms included)

The smallest, fastest, most feature-rich PDF editor/viewer available

PrizmDoc Viewer empowers developers to provide their users with responsive file viewing without the need to download plugins or open any other applications.

paid Free Trial

PDFJet is a mobile and cloud PDF Library for Java and .NET to generate PDF documents.