Challenger Comics Viewer

The Challenger

About this app

Challenger Comics Viewer is a FREE (NO ADS) advanced comics, manga, books and PDF viewer.
It's really simple to use. You just have to scroll ! Pages are automatically loaded and displayed (no need to click to go to next page).
It's FREE and THERE ARE NO ADS.
This version works perfectly on phones AND tablets.

Supported image file formats are JPG, PNG, GIF, WebP (Android 4.0+) and BMP.
Supported book file formats are PDF, CBZ/ZIP, CBR/RAR, CBT/TAR, CB7/7Z, DjVu and ePUB.

Main features are :
• Automatic page loading
• Zoom using multi-touch
• Vertical/Horizontal scrolling
• 2 display modes (Simple View which displays pages one by one and Multiple Image View which displays all pages one after the other)
• Scale filters: Bilinear, Bicubic, Lanczos4
• Library with covers displayed to quickly open comics (multiple kind of views available)
• Automatically switch to next issue when last page of the comic is displayed
• Border cropping
• Read from left to right or right to left
• Actions can be customized
• Single page and "2 page" display mode
• Filter to improve displayed image quality
• Manual scrolling by moving finger on screen
• Autoscrolling by long pressing on screen
• Tap to go to Next/Previous pages
• Fit to Width/Height/Screen display
• Multiple Image preview type
• Option to direct access to page
• History management
• Support multi-language (for now, english, french, russian, italian)
• Border can be display over Bitmap to easily identify each pages
• Contrast/Brightness/Saturation management
• Screen brightness management
• Application can be moved to SD Card
• Cached data can be stored in internal memory or SD Card
• Supports Samsung "Multi-Window" mode
• Color themes

Files can be accessed on the device or network.
Supported network protocols are :
• Google Drive
• OneDrive/SkyDrive
• Mega
• Ubooquity (http://vaemendis.net/ubooquity)
• DLNA/Upnp (Need Android >= 4.0.3)
• OPDS (beta)
• Windows/SAMBA/CIFS
• DropBox
• Webdav/Cloud (like box.com, 4shared.com, alwaysdata.com, ...)
• FTP
• SFTP

The application needs a phone/tablet with lots of memory and a powerful processor, so don't be disappointed if your phone is quite old and performance is not good.
For instance, it works perfectly on Nexus 4, Nexus 7, Nexus 10, Galaxy S2, Galaxy S3, Galaxy S4, Galaxy S5, Galaxy S6, Galaxy S7, Galaxy Tab, ...

Documentation is available at : http://challengerviewer.wordpress.com/challenger-comics-viewer-documentation/
An FAQ is available at : http://challengerviewer.wordpress.com/challenger-comics-viewer-faq/
The English forum : http://forum.xda-developers.com/showthread.php?t=1389440

Please add comments if you like this app or if you have some new features idea.
To report bugs, don't hesitate to send me e-mail.
Thanks !

Ratings and reviews

The app is perfect. Just one little issue. It cannot delete comics on the sd card. I assume it doesnt have write access and i couldnt figure out how to give it to the app. Other than that the only app that could handle my library so far. Thx... It still doesnt work. The comic is removed from librarybut not file system. When clicking remove there is an error shown that the .cbr file was not removed correctly. Thx

It's altogether a good app, very clean and the page fills up the whole screen nicely, very easy to use. I'm knocking off two stars, because it does not read .rar/.cbr files, though it says in the description that the app does read .rar. All my files with that extension just won't read, and it's extremely bothersome that I always have to check and convert.

Checks off all my requirements. Vertical document-style reading, whole document zoom (not separate pages), option for bitmap scale, double-tap zoom in/out, fullscreen reading, border cropping (no useless white space), autoscroll, and some stuff I probably forget right now. It is simple and does what I need it to do. Small suggestion, but not high-urgency: save page as image function.

What’s new

• Compatible with Android 14