FBReader vs MuPDF

FBReader7.5Visit MuPDF6.7Visit

Higher score FBReader #3 in File Reader Software 7.5/10 Free plan Free plan✓ 0 of 4 features Visit FBReader

vs

MuPDF #8 in File Reader Software 6.7/10 Free plan · paid from $299/mo · 14-day trial Free plan✓ 1 of 4 features Visit MuPDF

• FBReader fits best

  Readers who want broad-format ebook support

• MuPDF fits best

  Teams needing PDF rendering and document manipulation

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. It never changes our verdict. How we rank.

Side by side

Feature	FBReader 7.5/10 Visit ↗	MuPDF 6.7/10 Visit ↗
At a glance
Editor score	7.5	6.7
Ranking	#3 in File Reader Software	#8 in File Reader Software
Best for	Readers who want broad-format ebook support	Teams needing PDF rendering and document manipulation
Pricing model	Free plan + paid	Free plan + paid
Starting price	Not published	Not published
Free plan	✓	✓
Free trial	—	—
Deployment	Desktop, Mobile	Cloud, Self-hosted, Browser extension
Platforms	Windows, macOS, Linux, iOS, Android	Web, Linux, Windows, macOS
Support	Community, Docs	Email
Built for	Solo, Small business	Small business, Mid-market, Enterprise
Features FBReader 0/4 · MuPDF 1/4
Annotations	Not published	✓ (best)
Text search	Not published	Not published
Accessibility support	Not published	Not published
Cloud sync	Not published	Not published
Specs
Supported formats	Not published	Not published
Platforms	Not published	Not published
Our review
Pros	Reads EPUB, FB2, MOBI, HTML, RTF, and plain text Offers bookmarks, synced reading position, and customizable layouts Runs on Windows, macOS, Linux, iOS, and Android	Renders PDFs and other supported document formats across platforms Combines annotation, redaction, signing, extraction, and file manipulation Offers source-code releases under the AGPL and command-line tools
Cons	PDF and comics support is included with Android Premium The free iOS edition limits the library to ten books Some mobile features, including network translators, require a paid edition	WebViewer Commercial costs $299 per license per month Commercial licenses cover one domain each The WebViewer is licensed separately from MuPDF source-code releases
Our verdict	FBReader is an ebook reader for people who want to read across desktop and mobile devices without being tied to a single book format. It supports EPUB and FB2, along with MOBI, HTML, RTF, and plain text, and it can open Readium… Read the review →	MuPDF is a document engine and PDF viewer from Artifex Software, suited to developers and teams that need document rendering and manipulation rather than only a basic reader. Its offerings include a C library, command-line tools, language… Read the review →

Strengths and trade-offs

• FBReader — where it wins

  • Reads EPUB, FB2, MOBI, HTML, RTF, and plain text
  • Offers bookmarks, synced reading position, and customizable layouts
  • Runs on Windows, macOS, Linux, iOS, and Android

  Where it doesn't

  • PDF and comics support is included with Android Premium
  • The free iOS edition limits the library to ten books
  • Some mobile features, including network translators, require a paid edition

• MuPDF — where it wins

  • Renders PDFs and other supported document formats across platforms
  • Combines annotation, redaction, signing, extraction, and file manipulation
  • Offers source-code releases under the AGPL and command-line tools

  Where it doesn't

  • WebViewer Commercial costs $299 per license per month
  • Commercial licenses cover one domain each
  • The WebViewer is licensed separately from MuPDF source-code releases

• FBReader7.5/10 · Free plan

  A format-flexible ebook reader with free desktop editions and optional paid mobile features.

  Visit FBReaderFull verdict →
• MuPDF6.7/10 · Free plan · paid from $299/mo · 14-day trial

  A cross-platform PDF toolkit for rendering, extraction, annotation, and document editing.

  Visit MuPDFFull verdict →