
Firefox PDF Viewer (PDF.js) Alternatives
Firefox PDF Viewer (PDF.js) is described as 'PDF Viewer (aka pdf.js) is a new revolutionary extension using web standard technologies that allows you to display within Mozilla Firefox almost all PDF files found on the web without a plugin' and is a very popular PDF Reader in the web browsers category. There are more than 50 alternatives to Firefox PDF Viewer (PDF.js) for a variety of platforms, including Windows, Linux, Mac, Android and Web-based apps. The best Firefox PDF Viewer (PDF.js) alternative is SumatraPDF, which is both free and Open Source. Other great apps like Firefox PDF Viewer (PDF.js) are Okular, Foxit PDF Reader, Evince and MuPDF.
Alternatives list

PrivatePDF is a free web tool that lets you make quick PDF edits from within your web browser, without uploading anything anywhere.


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AI powered productivity tool for reading, understanding and taking notes on PDFs and long websites. Users can search, summarise, extract and define keywords, ask google-search type questions and be taken straight to the answers.
Cost / License
- Paid
- Proprietary
Platforms
- Google Chrome
- Software as a Service (SaaS)


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- 8 Trexo PDF Signer alternatives
Free, open-source desktop app for legally binding PDF digital signatures. Sign with PKCS#11 hardware tokens, USB dongles, smart cards, PFX certificates, or Windows keystore. Adobe-compatible, RFC 3161 timestamped, fully offline — no cloud, no subscription.
Cost / License
- Free Personal
- Open Source (AGPL-3.0)
Platforms
- Windows
- Linux
- Mac


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Unlock the potential of your PDF documents with PDFquiz.ai, the leading PDF to quiz converter. Effortlessly convert PDF to quiz with our AI quiz generator and AI test maker.
Cost / License
- Freemium
- Proprietary
Platforms
- Online

Comprehensive PDF tool for viewing, editing, annotations, and conversion between formats like Word, Excel, or PPT. Features include encryption, redaction, and fast batch processing.


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Altarsoft PDF Reader is a program for viewing and editing PDF files.
Main Features:
- open / save pdf files
- zoom in / zoom out
- rotate page
- encrypt pdf file
- decrypt pdf file
- add annotations
- add bookmarks
- add watermarks
- add attachments
- convert images to pdf file.

- 44 pdfDocs alternatives
pdfDocs integrates with business systems to efficiently assemble, secure and distribute documents in PDF and PDF/A format.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Windows
- Microsoft SharePoint
- Worldox

The Flipping PDF Reader allows to read PDF documents in user friendly interface with flipping book effect. Good looking and convenient alternative for Adobe PDF Reader.

Shelf is a convergent document viewer that supports PDF and EPUB files. With Shelf, you can organize your document collection by creating tags, like other Maui applications.



Perfect PDF Reader functionality:
- open, read, display any PDF file
- print PDF documents
- export PDF as plain text
- export PDF by the page as images (not available in Adobe Reader!)
- great number of navigation and display modes, zoom
- rotate pages
- send PDF file via email.

Xelitan PDF Reader - is a fast and easy-to-use PDF viewer. Allows users to export embedded images, extract pages to PDF, remove pages from PDF documents and convert to PNG or JPEG images. It's free for home and commercial use.


































