STDU Viewer AlternativesOnly apps categorised as PDF Readers

The best PDF Reader alternative to STDU Viewer is SumatraPDF, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to STDU Viewer and loads of them are PDF Readers so hopefully you can find a suitable replacement. Other interesting PDF Reader alternatives to STDU Viewer are Okular, Foxit PDF Reader, Evince and MuPDF.

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STDU Viewer alternatives are mainly PDF Readers but may also be Ebook Readers or Text to Speech Services.  Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of STDU Viewer.
STDU Viewer iconSTDU Viewer
  93
  • ...

Are you tired from many viewers one for each document? Do you want to have, one program for all your technical documentations, scientific books and so on? Do you want to have program, which fast opens files, fast loads...

More about STDU Viewer
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STDU Viewer alternatives page was last updated Aug 31, 2022
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  1. SumatraPDF icon
    SumatraPDF icon

    SumatraPDF

     1614 likes
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    This free, open-source viewer for Windows supports multiple formats like PDF, eBooks (ePub, Mobi), CHM, and Comic Books (CBZ, CBR). Prioritizing simplicity and speed, it offers a lightweight, portable design with a minimalist interface, catering to users seeking fast and efficient document viewing.

    108 SumatraPDF alternatives
    SumatraPDF screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Windows
    SumatraPDF screenshot 1
    SumatraPDF screenshot 2
    +3
    SumatraPDF screenshot 3

    Properties

    1.  Lightweight
    2.  Optimal performance

    Features

    1.  Low memory usage
    2.  Ad-free
    3.  Tabbed interface
    4.  Portable
    5.  Multi Format Reader
    6.  No registration required
    7.  Works Offline
    8.  Highlighter
    9.  PDF annotation
    10.  Global bookmarks
    11.  Dark Mode
    12.  Quick search
    SumatraPDF iconSTDU Viewer Icon

    SumatraPDF VS STDU Viewer

    Is SumatraPDF a good alternative to STDU Viewer?
     

    • Most users think SumatraPDF is a great STDU Viewer alternative.

    • SumatraPDF is the most popular Windows alternative to STDU Viewer.

    • SumatraPDF is the most popular Open Source & free alternative to STDU Viewer.

    • SumatraPDF is Free and Open SourceSTDU Viewer is Free Personal and Proprietary
    • SumatraPDF is LightweightSTDU Viewer is not according to our users
  2. Okular icon
    Okular icon

    Okular

     437 likes
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    Multi-platform, fast and packed with features, Okular allows you to read PDF documents, comics and EPub books, browse images, visualize Markdown documents, and much more.

    110 Okular alternatives
    Okular screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Windows
    • Linux
    • BSD
    • KDE Plasma
    • Linux Mobile
    • Haiku
    • Snapcraft
    • Flathub
    Okular screenshot 1
    Okular screenshot 2
    +2
    Okular screenshot 3

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  PDF annotation
    2.  Text Highlighting
    3.  Tabbed interface
    4.  Ad-free
    5.  Dark Mode
    6.  Low memory usage
    7.  KDE
    8.  Works Offline
    9.  Customizable shortcuts
    10.  Text to Speech
    11.  Fill PDF Forms
    12.  No Tracking
    Okular iconSTDU Viewer Icon

    Okular VS STDU Viewer

    Is Okular a good alternative to STDU Viewer?
     

    • Okular is the most popular Linux alternative to STDU Viewer.

    • Okular is Free and Open SourceSTDU Viewer is Free Personal and Proprietary
    • Okular is Lightweight and Privacy focusedSTDU Viewer is not according to our users
  4. Foxit PDF Reader icon
    Foxit PDF Reader icon

    Foxit PDF Reader

     1368 likes
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    Foxit Reader offers a lightweight PDF viewing experience across multiple platforms with features such as annotation, form filling, signing, cloud storage integration, collaborative review options, heightened security via Trust Manager, and organizational tools like Group Policy and XML Configuration.

    116 Foxit PDF Reader alternatives
    Foxit PDF Reader screenshot 1

    License model

    • Free Personal • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • ReactOS
    35 Languages
    Customize Tools
    +4
    Foxit PDF Reader screenshot 3

    Properties

    1.  Lightweight

    Features

    1.  PDF annotation
    2.  Fill PDF Forms
    3.  Sign PDF files
    4.  Highlighter
    5.  Scan documents
    6.  Text to Speech
    7.  Tablet support
    8.  Booklet printing
    9.  Support for scripting
    10.  Text Highlighting
    11.  Portable
    12.  Spell Checking
    Bundleware

    The installer tries to install McAfee WebAdvisor and PhantomPDF Business. These can be skipped by clicking Decline on each.

    Foxit PDF Reader iconSTDU Viewer Icon

    Foxit PDF Reader VS STDU Viewer

    Is Foxit PDF Reader a good alternative to STDU Viewer?
     

    • Most users think Foxit PDF Reader is a great STDU Viewer alternative.

    • Foxit PDF Reader is the most popular Mac alternative to STDU Viewer.

    • Foxit PDF Reader is Free Personal and ProprietarySTDU Viewer is also Free Personal and Proprietary
    • Foxit PDF Reader is LightweightSTDU Viewer is not according to our users
  5. Ad
    Screenshot
    Adobe Acrobat Reader icon

    Adobe Acrobat Reader

    Seamlessly view, annotate, and collaborate on PDFs with freehand drawing and sticky notes. Utilize cloud storage for effortless access and upgrade for advanced editing and conversion to formats like Word and Excel.

    https://www.adobe.com
    Learn More
  6. Evince icon
    Evince icon

    Evince

     456 likes
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    Evince (or GNOME Document Viewer) is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS, SyncTex support with gedit, comics books (cbr,cbz,cb7 and cbt) and others. See Supported Document Formats for details.

    116 Evince alternatives
    Evince screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Linux
    • PortableApps.com
    • Flathub
    • GNOME
    Evince screenshot 1
    Evince screenshot 2
    +3
    Evince screenshot 3

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  PDF annotation
    2.  Invert colours
    3.  Multiple languages
    4.  Dark Mode
    5.  Ad-free
    6.  Portable
    7.  Works Offline
    8.  No registration required
    9.  No Tracking
    10.  Handwriting recognition
    11.  Windows Compatible
    Evince iconSTDU Viewer Icon

    Evince VS STDU Viewer

    Is Evince a good alternative to STDU Viewer?
     
  7. MuPDF icon
    MuPDF icon

    MuPDF

     151 likes
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    MuPDF is a highly versatile, customizable PDF and XPS interpreter solution that can be used across a wide range of applications as a PDF renderer, viewer, or toolkit.

    90 MuPDF alternatives
    MuPDF screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    • Xfce
    MuPDF screenshot 1
    iPad (1)
    +3
    iPad (2)

    Properties

    1.  Lightweight

    Features

    1.  Portable
    2.  Ad-free
    3.  Vim Key Mapping
    4.  PDF annotation
    5.  Sign PDF files
    6.  PDF compression
    7.  Combine PDF
    8.  Split PDF files
    9.  Fill PDF Forms
    MuPDF iconSTDU Viewer Icon

    MuPDF VS STDU Viewer

    Is MuPDF a good alternative to STDU Viewer?
     

    • MuPDF is the most popular Android alternative to STDU Viewer.

    • MuPDF is Free and Open SourceSTDU Viewer is Free Personal and Proprietary
    • MuPDF is LightweightSTDU Viewer is not according to our users
  8. Adobe Acrobat Reader icon
    Adobe Acrobat Reader icon

    Adobe Acrobat Reader

     443 likes
    Copy a direct link to this comment to your clipboard

    Seamlessly view, annotate, and collaborate on PDFs with freehand drawing and sticky notes. Utilize cloud storage for effortless access and upgrade for advanced editing and conversion to formats like Word and Excel.

    102 Adobe Acrobat Reader alternatives
    Adobe Acrobat Reader screenshot 1

    License model

    • Freemium • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Adobe Acrobat Reader screenshot 1
    Adobe Acrobat Reader screenshot 2
    +9
    Adobe Acrobat Reader screenshot 3

    Properties

    1.  Lightweight

    Features

    1.  Edit PDF
    2.  PDF annotation
    3.  Fill PDF Forms
    4.  Document Annotations
    5.  Create PDF files
    6.  Dark Mode
    7.  Combine PDF
    8.  Sign PDF files
    9.  Multi-tabs
    10.  OCR
    11.  PDF compression
    12.  No registration required
    Adobe Acrobat Reader iconSTDU Viewer Icon

    Adobe Acrobat Reader VS STDU Viewer

    Is Adobe Acrobat Reader a good alternative to STDU Viewer?
     

    • Adobe Acrobat Reader is the most popular iPhone, iPad & Android Tablet alternative to STDU Viewer.

    • Adobe Acrobat Reader is Freemium and ProprietarySTDU Viewer is Free Personal and Proprietary
    • Adobe Acrobat Reader is LightweightSTDU Viewer is not according to our users
  10. FBReader icon
    FBReader icon

    FBReader

     217 likes
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    E-reader application.

    107 FBReader alternatives
    FBReader screenshot 1
    FBReader screenshot 2

    License model

    • Freemium • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad

    Properties

    1.  Lightweight

    Features

    1.  No Tracking
    2.  No registration required
    3.  Dark Mode
    4.  Cloud Sync
    5. calibre icon  Calibre integration
    6.  Multiple languages
    7.  OPDS Client
    8.  iPhone/iPod sync
    FBReader iconSTDU Viewer Icon

    FBReader VS STDU Viewer

    Is FBReader a good alternative to STDU Viewer?
     
  11. MJ PDF Reader icon
    MJ PDF Reader icon

    MJ PDF Reader

     20 likes
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    A totally free of cost and ads PDF documents reader.

    65 MJ PDF Reader alternatives
    MJ PDF Reader screenshot 1
    MJ PDF Reader screenshot 2
    +1
    MJ PDF Reader screenshot 3

    License model

    • Free • Open Source

    Application type

    Platforms

    • Android

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  Ad-free
    2.  Works Offline
    3.  Dark Mode
    4.  Full-Text Search
    5.  No registration required
    6.  No Tracking
    7.  PDF annotation
    MJ PDF Reader iconSTDU Viewer Icon

    MJ PDF Reader VS STDU Viewer

    Is MJ PDF Reader a good alternative to STDU Viewer?
     
  12. Sioyek icon
    Sioyek icon

    Sioyek

     18 likes
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    Sioyek is a PDF viewer with minimal interface optimized for reading research papers and technical books.

    34 Sioyek alternatives
    Main view

    License model

    • Free • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    You can search in the table of contents
    Portals show relevant figures to the current location in a separate window
    +2
    Middle clicking on the name of a figure takes you to the figure, event if the PDF doesn't have links

    Properties

    1.  Keyboard focused
    2.  Lightweight
    3.  Support for Themes

    Features

    1.  Dark Mode
    2.  PDF annotation
    3.  Ad-free
    4.  Full-Text Search
    Sioyek iconSTDU Viewer Icon

    Sioyek VS STDU Viewer

    Is Sioyek a good alternative to STDU Viewer?
     
  13. Xodo icon
    Xodo icon

    Xodo

     70 likes
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    Xodo is the ultimate cross-platform PDF viewer and annotator. Powerful, fast, and optimized for all phones and tablets, Xodo makes it easy to access, edit, mark up, sort, share, sync, manage, sign, and more with even the most complex PDF documents.

    111 Xodo alternatives
    Xodo PDF - comment, highlight, underline & more

    License model

    Application types

    Platforms

    • Windows
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Google Chrome
    Xodo Connect - collaborate with others
    Xodo PDF - edit, and annotate on PDF
    +9
    Xodo PDF - clear and sharp page view

    Properties

    1.  Lightweight

    Features

    1.  PDF annotation
    2.  Dark Mode
    3.  Export to PDF
    4. Google Drive icon  Google Drive integration
    5.  Sign PDF files
    6.  Annotations
    7.  Ad-free
    8.  Combine PDF
    9.  Split PDF files
    10.  OCR
    11.  Real time collaboration
    12.  Split and merge PDF files
    Xodo iconSTDU Viewer Icon

    Xodo VS STDU Viewer

    Is Xodo a good alternative to STDU Viewer?
     

    • Xodo is the most popular Web-based alternative to STDU Viewer.

    • Xodo is the most popular commercial alternative to STDU Viewer.

    • Xodo is Paid and ProprietarySTDU Viewer is Free Personal and Proprietary
    • Xodo is LightweightSTDU Viewer is not according to our users
  14. Qoppa PDF Studio icon
    Qoppa PDF Studio icon

    Qoppa PDF Studio

     81 likes
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    Create, Convert, Review and Edit PDF Documents on Windows, macOS, and Linux.

    189 Qoppa PDF Studio alternatives
    Annotate

    License model

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Chrome OS
    Dark Mode
    Add Watermarks
    +7
    Digital Signature

    Top Qoppa PDF Studio Features

    1.  Edit PDF
    2.  Sign PDF files
    3.  Scan to PDF
    4.  PDF Redaction
    5.  Convert PDF to Word document
    6.  Create PDF files
    7.  Fill PDF Forms
    8.  Dark Mode
    9.  Text to Speech
    10.  OCR
    11.  Spell Checking
    12.  Ad-free
    Qoppa PDF Studio iconSTDU Viewer Icon

    Qoppa PDF Studio VS STDU Viewer

    Is Qoppa PDF Studio a good alternative to STDU Viewer?
     
  15. Secure PDF Viewer icon
    Secure PDF Viewer icon

    Secure PDF Viewer

     14 likes
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    Simple Android PDF viewer based on pdf.js and content providers. The app doesn't require any permissions.

    72 Secure PDF Viewer alternatives
    Secure PDF Viewer screenshot 1
    Secure PDF Viewer screenshot 2
    +5
    Secure PDF Viewer screenshot 3

    License model

    • Free • Open Source

    Application type

    Platforms

    • Android

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  Ad-free
    2.  Works Offline
    3.  No Permissions required
    Secure PDF Viewer iconSTDU Viewer Icon

    Secure PDF Viewer VS STDU Viewer

    Is Secure PDF Viewer a good alternative to STDU Viewer?
     
12 of 58 STDU Viewer alternatives