Firefox PDF Viewer (PDF.js) vs Sumatra PDF

Compare features, pricing, and capabilities to find which solution is best for your needs.

Firefox PDF Viewer (PDF.js) icon

Firefox PDF Viewer (PDF.js)

Firefox PDF Viewer (PDF.js) is an open-source, web standards-based PDF viewer embedded directly within the Firefox browser. It allows users to view PDF documents seamlessly without the need for external software or plugins, enhancing browser-based document handling and accessibility. by Mozilla Labs

Open Source
Platforms: Mac OS X Windows Linux Google Chrome Opera Firefox
Screenshots:
VS
Sumatra PDF icon

Sumatra PDF

Sumatra PDF is a free and lightweight PDF reader for Windows, renowned for its speed and minimalist interface. Beyond PDF, it supports a variety of other formats including EPUB, MOBI, CBR, CBZ, XPS, and DjVu, making it a versatile e-reader. by Krzysztof Kowalczyk

Open Source
Platforms: Windows PortableApps.com
Screenshots:

Comparison Summary

Firefox PDF Viewer (PDF.js) and Sumatra PDF are both powerful solutions in their space. Firefox PDF Viewer (PDF.js) offers firefox pdf viewer (pdf.js) is an open-source, web standards-based pdf viewer embedded directly within the firefox browser. it allows users to view pdf documents seamlessly without the need for external software or plugins, enhancing browser-based document handling and accessibility., while Sumatra PDF provides sumatra pdf is a free and lightweight pdf reader for windows, renowned for its speed and minimalist interface. beyond pdf, it supports a variety of other formats including epub, mobi, cbr, cbz, xps, and djvu, making it a versatile e-reader.. Compare their features and pricing to find the best match for your needs.

Pros & Cons Comparison

Firefox PDF Viewer (PDF.js)

Firefox PDF Viewer (PDF.js)

Analysis & Comparison

Advantages

Seamlessly integrated into Firefox
Secure and runs within the browser sandbox
Fast and lightweight for viewing
No external software or plugins required
Based on open web standards (HTML5)
Free and open source

Limitations

Limited editing capabilities
Basic annotation support
Does not support advanced PDF features like digital signatures or OCR
Performance can vary with extremely large or complex files
Support for complex PDF forms may be limited
Sumatra PDF

Sumatra PDF

Analysis & Comparison

Advantages

Extremely fast document loading and rendering.
Very low system resource usage (lightweight).
Supports a wide range of document and e-book formats.
Available as a portable application.
Clean and simple user interface.
Effective for reading and basic navigation.

Limitations

Lacks advanced PDF editing capabilities (form filling, complex annotations, creation).
Limited feature set compared to full-fledged PDF suites.
The minimalist design might feel too basic for some users.

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