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.

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Alternatives list

  1. SimplePDF empowers you to edit, fill, sign, and manage PDF documents seamlessly, directly within your browser. Whether you're an individual handling occasional forms or a business streamlining document workflows, SimplePDF offers a robust, user-friendly solution.

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Online
    • Software as a Service (SaaS)
     
  2. Kami icon
     17 likes

    Cloud-based PDF viewer and annotation tool for your browser. Perfect for Chromebook 1:1 schools. View, export, print and share your PDF files straight from your browser. Kami works on all browsers and works best with Google Chrome.

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Online
    • Google Chrome
     
  3. Supercharge your paper reading: follow references, skim outline, jump to figures, cite and save.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Google Chrome
     
  4. PDF Max is a desktop class PDF app for reading, annotating or signing PDF documents on your iPhone/iPad. Mark up documents with highlights and handwriting, insert texts and stamps, fill out, sign PDFs and even manipulate PDF pages.

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • iPhone
    • iPad
     
  5. NightPDF icon
     5 likes

    Dark Mode PDF reader.

    Cost / License

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
     
  6. Besides exceptionally fast launching and displaying speed, Gaaiho Reader is reliable in printing, filling forms annotating documents and adding bookmarks.

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Mac
     
  7. Xpdf icon
     12 likes

    Xpdf is a free PDF viewer and toolkit, including a text extractor, image converter, HTML converter, and more. Most of the tools are available as open source.

    66 Xpdf alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
     
  8. PDF4QT icon
     9 likes

    Open-source PDF viewer and editor using Qt framework, featuring hardware-accelerated rendering, encryption, multithreading, text-to-speech, annotation tools, form filling, high-res monitor support, document compression, audio book conversion, and signature validation.

    112 PDF4QT alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Windows
    • Linux
    • Flathub
     
  9. SimplePDF icon
     1 like

    Simple macOS PDF reader with ChatGPT integrated. You can chat with your local PDF. The returned response can cite the page number to ensure correctness.

    Cost / License

    Application type

    Platforms

    • Mac
     
  10. Xreader icon
     1 like

    Xreader is a document viewer capable of displaying multiple and single page document formats like PDF and Postscript.

    52 Xreader alternatives

    Cost / License

    Application type

    Platforms

    • Linux
     
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