Cool Reader

Reading books in epub, fb2, txt, doc, rtf, html, chm, tcr, pdb, pml formats.

Cool Reader

App stats

Version: 3.2.55-1 (Last updated: 2021-03-09)
Creation date: 2010-12-02
Permissions
Phone: read phone status and identity
Photos/Media/Files: read the contents of your USB storage, modify or delete the contents of your USB storage
Storage: read the contents of your USB storage, modify or delete the contents of your USB storage
Device ID & call information: read phone status and identity
Other:
  • pair with Bluetooth devices
  • full network access
  • prevent device from sleeping

Other platforms

Dysly Reader (v0.06)
5.00 (2) 142
Cozy Reader (v0.2.1)
5.00 (1) 28
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App summary

eBook reader. Supports epub (non-DRM), fb2, doc, txt, rtf, html, chm, tcr, pdb, prc, mobi (non-DRM), pml formats.

Pages or scroll view. Page flipping animation.
Table of contents, bookmarks, text search.
Bookmarks on text fragments (comments or corrections) - useful for proof reading.
Export of bookmarks to text file.
Built-in file browser, quick recent books access.
Online catalogs (OPDS) support.
LitRes online book store support.
Text to Speech (TTS) support.
Hyphenation dictionaries;
Most complete FB2 format support: styles, tables, footnotes.
Additional fonts support (place .ttf to /sdcard/fonts/)
Support for Chinese, Japanese, Korean languages; autodetection of TXT file encoding (GBK, Shift_JIS, BIG5, EUC_KR).
Day and night profiles (two sets of colors, background, backlight levels).
Brightness adjustments by flick on left edge of screen.
Background texture (stretched or tiled) or solid color.
Paperbook-like page turning animation or "sliding page" animation.
Dictionary support (ColorDict, GoldenDict, Fora Dictionary, Aard Dictionary).
Customizable tap zone and key actions.
Autoscroll (automatic page flipping) - start using menu/goto/autoscroll or assign action Autoscroll on key or tap zone; Change speed using volume keys or bottom-right and bottom-left tap zones; stop - tap any other tap zone or key.
Can read books from zip archives.
Automatic reformatting of .txt files (autodetect headings etc.)
Styles can be customised in wide range using external CSS.
Select text using double tap (optional).

Place additional textures to /sdcard/.cr3/textures/ -- to be used as tiled page backgrounds.
Place additional textures to /sdcard/.cr3/backgrounds/ -- to be used as stretched page backgrounds.
(/cr3/ directory can also be used instead of /.cr3/, and internal SD or internal storage instead of /sdcard/)

CoolReader requires following permissions:
WAKE_LOCK - to control screen backlight
WRITE_EXTERNAL_STORAGE - to access SD card
INTERNET - to use online catalogs

CoolReader is free, open source (GPL), multiplatform project.
Project homepage on SourceForge is http://sourceforge.net/projects/crengine/
To donate this project, you can buy Cool Reader Gold ($10), Silver ($3) or Bronze ($1) Donation package from Market

In case of issues after update (e.g. crashes while reading) try to remove directory SD/.cr3/cache and book database files SD/.cr3/*.sqlite

Windows version can be downloaded here:
http://sourceforge.net/projects/crengine/files/CoolReader3/cr3-newui-opengl/cr3-win32-qt-opengl-3.3.48.zip/download

As well, consider using "Cool Reader GL" - cross-platform Cool Reader version with UI rewritten in C++, with hardware acceleration based on OpenGL. Optimized for new devices with big high resolution screens. Both versions can be installed together.

Project homepage: https://github.com/buggins/coolreader

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Google Play Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Highly customizable user interface and reading experience
  • Supports multiple file formats including EPUB, PDF, and MOBI
  • No ads and completely free
  • Sync capabilities across devices
  • Responsive and simple interface
Cons
  • Various bugs affecting bookmarks and last page read functionality
  • Issues with changing background color and brightness settings
  • Problems with text-to-speech settings and language detection
  • Slow performance when opening files from folders with many files
  • Inconsistent handling of fonts and formatting in EPUB files
Most mentioned
  • Customization options
  • Bugs and glitches
  • File format support
  • User interface
  • Performance issues
User reviews
I love this app but I recently encountered a nasty bug. If you modify the "Author" metadata, an unwanted "Author" entry is added, which you can neither edit nor delete. This is particularly annoying when you Send bookmarks to Google Drive. There is another bug also affecting bookmarks if you open a book with a file manager outside of Coolreader.
by Ian Goedecke, 2024-05-28

Basically perfect ebook reader, it reads my books and lets me custom the everything I see. My only gripe is with text colors, there's no real green or custom colors allowed, you have to pick from a list of preset choices, but the app has a color picker that could be used... Please add custom colors or "CRT Green" as an option, will donate $5 for this
by Jester, 2024-03-29

The follow is still happening with no fix. I have been using this app for years but updates have made it nearly unusable. The last Bookmark created is gone when the app is next opened. The last page read does not open when the app is started. This needs to be fixed. I have to keep notes of the last page read in a book.
by R A, 2024-03-03
View all user reviews

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