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Sumatra PDF VS Fast Reader

Compare Sumatra PDF VS Fast Reader and see what are their differences

Sumatra PDF

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

Rating
0 reviews
Alternatives Is it good?
Fast Reader

Reading one word at a time. Contribute to Quantum-mutnauQ/Fast_Reader_GTK development by creating an account on GitHub.

Rating
0 reviews
Alternatives Is it good?
Tacit AI
FMEAs that stay current. Tacit AI builds DFMEAs, PFMEAs and FMECAs from your design specs, process documents, manuals and failure reports, and updates them as they change. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Sumatra PDF seems to be more popular. It has been mentioned 1 time since March 2021.

social mentions
1 vs 0
PDF Tools popularity
100% vs 0%
alternatives listed
240+ vs 21

Base details

Website, pricing, platforms and company facts side by side.

Sumatra PDF
Fast Reader
Website sumatrapdfreader.org github.com
Listed in
PDF Readers And Editors PDF Tools PDF Reader eBook Reader +1
AI Tool Productivity Group Chat & Notifications +1

Features and specs

What each product offers, as listed by its team.

Sumatra PDF 6 features
Fast Reader 4 features
  • Lightweight
    Sumatra PDF is known for its small footprint, making it quick to download and install. It runs efficiently on older hardware.
  • Speed
    The application is fast to open and navigate, even with large PDF files, enhancing the user experience.
  • Simplicity
    Sumatra PDF offers a minimalistic interface that is easy to navigate for users who need a straightforward PDF reader without unnecessary features.
  • Portable Version
    Sumatra PDF offers a portable version that can be run without installation, ideal for use on multiple computers or USB drives.
  • Free and Open Source
    The software is free to use and open-source, allowing users to inspect the code and contribute to its development.
  • Support for Multiple Formats
    In addition to PDFs, Sumatra PDF supports ePub, Mobi, XPS, DjVu, CHM, and comic book formats (CBZ and CBR), making it versatile.

Possible disadvantages

  • Limited Features
    Sumatra PDF lacks advanced features such as form filling, text editing, and annotations, which are available in other PDF readers.
  • No Document Editing
    The application does not support document editing, which can be a drawback for users needing to make changes to their PDFs.
  • Basic User Interface
    The simplistic design might not appeal to users who prefer a more modern or visually appealing interface.
  • Restricted Customization
    Sumatra PDF offers limited customization options, providing fewer settings and user preferences compared to other PDF readers.
  • No Cloud Integration
    The software lacks integrated support for cloud storage services, which can be inconvenient for users who manage documents online.
  • No Advanced Security Features
    Sumatra PDF does not include advanced security features such as digital signatures or encryption, which are essential for some professional users.
  • Open Source
    Fast Reader is available on GitHub, allowing users to view, modify, and contribute to the source code, fostering community collaboration and transparency.
  • Cross-Platform Compatibility
    Being built with GTK, Fast Reader can run on various operating systems, including Linux, Windows, and macOS, making it accessible to a wide range of users.
  • Active Development
    The project is actively maintained, which means users can expect regular updates and ongoing support for new features and bug fixes.
  • Speed Optimization
    Fast Reader is designed to enhance reading speed, providing users with tools and functionalities that can help improve reading efficiency.

Possible disadvantages

  • Technical Complexity
    As an open-source project, users who wish to customize or contribute may need a certain level of technical expertise, which could be a barrier for non-technical users.
  • Limited User Interface Customization
    While functional, the user interface may not offer extensive customization options compared to commercial applications, potentially limiting user experience.
  • Potential Stability Issues
    Like many open-source projects, Fast Reader might experience occasional bugs or crashes, especially on less common system configurations.
  • Community-Dependent Support
    Support is primarily community-driven, which might result in slower response times for troubleshooting and assistance compared to professional or commercial software solutions.

Analysis

An editorial look at what each product does well and who it suits.

Sumatra PDF
Fast Reader

Overall verdict

  • Sumatra PDF is a great choice for anyone looking for a reliable and efficient PDF reader. Its performance, coupled with its simplicity, makes it a top recommendation for those who need a no-frills document viewer.

Why this product is good

  • Sumatra PDF is considered good because it is lightweight, fast, and easy to use. Its simplicity and minimalistic design make it an excellent choice for users who need a straightforward PDF reader without any unnecessary features. It has a quick load time and supports a variety of document formats including PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, and CBR. Additionally, it is open-source and doesn't require installation, making it ideal for users who prioritize portability.

Recommended for

    Sumatra PDF is especially recommended for users who need a fast and lightweight PDF reader with basic functionalities. It's ideal for those who want a simple tool for reading PDFs and other document formats without the complications of advanced features. It is also suitable for users who value open-source software.

Overall verdict

  • Fast Reader appears to be a useful open-source speed-reading tool that presents text one word (or chunk) at a time to help increase reading speed, though as with many GitHub projects its quality depends on active maintenance and community support.

Why this product is good

  • It is open source, meaning you can inspect the code, contribute, and self-host without licensing costs
  • Speed-reading tools using RSVP (Rapid Serial Visual Presentation) can help some users read faster and improve focus
  • Being on GitHub allows transparency, issue tracking, and community-driven improvements
  • Typically lightweight and free to use compared to commercial speed-reading apps

Recommended for

  • Developers and technical users comfortable with GitHub projects
  • People wanting to experiment with speed-reading techniques for free
  • Students and professionals who read large volumes of text and want to boost reading speed
  • Users who prefer open-source, self-hostable, and privacy-friendly tools

Videos

Walkthroughs and reviews on video.

Sumatra PDF 2 videos + Add
Fast Reader 0 videos + Add

Sumatra PDF my favorite PDF reader for Windows

More videos

  • - Sumatra PDF A FREE Portable PDF reader for Windows 10 | Alternative To Adobe PDF Reader

No Fast Reader videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Sumatra PDF
Fast Reader
100% 100%
PDF Tools
0% 0%
0% 0%
Productivity
100% 100%
100% 100%
PDF Editor
0% 0%
0% 0%
AI
100% 100%

User comments

Share your experience with using Sumatra PDF and Fast Reader. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

Sumatra PDF no reviews yet
Fast Reader no reviews yet

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Sumatra PDF 1 mention
Fast Reader 0 mentions
  • anyone know any good epub/pdf readers for windows 11?
    You can use your browser for both, there are extensions(FireFox - PDF & EPUB/Chrome - PDF& EPUB) for that. In case, you want you use a separate software for them, I suggest SumatraPDF--it handles both PDFs and .EPUB files. Source: over 3 years ago

Tracking Fast Reader since Jan 2026.

Alternatives to Sumatra PDF and Fast Reader

When comparing Sumatra PDF and Fast Reader, you can also consider the following products.

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