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Software · Photo & graphics

ACBR

Comic book reader and converter.

  • Completely free
  • Windows and Linux
  • Open source

Overview

Features described in its GitHub repository and on its official website: portable version without installation.

File formats mentioned: PDF, EPUB, MOBI, CBZ, CBR, FB2, PNG, WEBP and AVIF.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Portable mode (by creating a file named portable.txt in the same folder as the executable).” — official website, 10 November 2026

At a glance

All of ACBR is free: no feature is locked behind a paid plan, and its code is open.

Its licence (AGPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • Commercial use allowed

About

ACBR is a free and open source comic book reader and converter. Main Features: Compatible file formats: CBZ, CBR, CB7, PDF, EPUB, MOBI 7, FB2, JPG, PNG, WebP and AVIF Single and double page modes, page rotation, integrated video and audio player, metadata editor, Komga and Kavita server browser, RSS reader, partial gamepad support... UI available in: English, Spanish, Russian, German, Arabic, Filipino, Japanese and French Included Tools: Convert, resize or extract comic book files Convert and resize image files Extract color palettes from images Create comic book page and thumbnails templates Search for and open public domain online books and audiobooks Search for and open RSS feeds from podcasts and websites Search for and open radio station streams ...

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Facts collected from Unspecified source (platforms) —
  • Facts collected from Official plan pages (pricing, licence, terms) (commercial use) —
  • Last technical check: 6 November 2026
  • Description from Flathub — AppStream (Flathub)

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