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SumatraPDF vs Surfly

Professional comparison and analysis to help you choose the right software solution for your needs.

SumatraPDF icon
SumatraPDF
Surfly icon
Surfly

SumatraPDF vs Surfly: The Verdict

⚡ Summary:

SumatraPDF: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

Surfly: Surfly is a co-browsing software that allows website visitors to browse a website together with a customer support agent in real time. The agent can guide the visitor through the site, fill out forms, and illustrate features while chatting.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature SumatraPDF Surfly
Sugggest Score — —
Category Office & Productivity Online Services
Pricing Open Source —

Product Overview

SumatraPDF
SumatraPDF

Description: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

Type: software

Pricing: Open Source

Surfly
Surfly

Description: Surfly is a co-browsing software that allows website visitors to browse a website together with a customer support agent in real time. The agent can guide the visitor through the site, fill out forms, and illustrate features while chatting.

Type: software

Key Features Comparison

SumatraPDF
SumatraPDF Features
  • Lightweight and fast PDF reader
  • Supports many document formats like PDF, ePub, MOBI, XPS, DjVu, CHM, CBZ, CBR
  • Customizable with themes, keyboard shortcuts
  • Tabbed document interface
  • Supports annotations and highlighting
  • Continuous scrolling
  • Supports reflowable text
  • Supports digital signatures
  • Supports comics book formats
  • Supports eBooks
  • Supports syncing open documents across devices
Surfly
Surfly Features
  • Co-browsing
  • Screen sharing
  • Video chat
  • Form filling
  • Annotation tools
  • Session recording
  • Chatbot integration
  • Customizable interface
  • Multi-language support

Pros & Cons Analysis

SumatraPDF
SumatraPDF

Pros

  • Lightweight and fast
  • Supports many document formats
  • Free and open source
  • Customizable
  • Good support for comics and eBooks

Cons

  • Limited annotation features compared to advanced PDF editors
  • Lacks OCR capabilities
  • No cloud storage integration
  • No mobile apps
Surfly
Surfly

Pros

  • Improves customer engagement
  • Enables remote assistance
  • Boosts sales conversions
  • Reduces support costs
  • Easy to implement

Cons

  • Can be perceived as invasive
  • Requires training for agents
  • Limited customization in basic plan

Pricing Comparison

SumatraPDF
SumatraPDF
  • Open Source
Surfly
Surfly
  • Not listed

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Learn More About Each Product

SumatraPDF
SumatraPDF
Reviews, pricing & alternatives →
Surfly
Surfly
Reviews, pricing & alternatives →

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