A image/comic viewer application for Windows, Mac and Linux, it can show images very fast
Latest commit b3efc87 Aug 28, 2018



A image/comic viewer application for Windows, Mac and Linux, it can show images very fast

Project Website(in English / Japanese)


  • To show images very fast (using OpenGL)
  • Portable (without installers, registries, external libraries)
  • 2 Page Spread viewing (two images once, for digital books/comics)
  • To read archives directly (zip/7z/rar/cbr/cbz)
  • To show images (bmp/png/jpeg/ico/dds/tga/tiff/gif)
    • Supported for modern formats(JPEG 2000/JPEG XR/WebP)
    • Supported for Animated PNG(APNG)/GIF
    • Auto rotation (using JPEG EXIF)
  • To show Raw digital camera images
    • Canon(crw, cr2)
    • Nicon(nef)
    • Sony(arw)
    • Ricoh(dng)
    • etc..
  • Can make/view/search catalog from thousands of your digital books
  • Multilingual support(English/Spanish/Simplified Chinese/Japanese/Greek)


binary distributions

  • Windows zip (x86/x64)
  • Mac dmg (x64)
  • Linux AppImage (x64)


1 page viewing

1 page viewing

2 page spread viewing

Spread viewing

Stripped viewing

If you want, you can remove all attached bars and display only images. Hidden bars are displayed automatically when needed.

Stripped viewing

How to use

  • Run the app, and drop image folder/archive to the window.
  • Create shortcut, and drop image folder/archive on it.


  • Next Page (Press 'right Arrow Key', 'Mouse wheel down', 'Mouse forward button', or Click left end of window)
  • Prev Page (Press 'left Arrow Key', 'Mouse wheel up', 'Mouse back button', or Click right end of window)
  • Fullscreen (Press 'F11 Key', click Mouse wheel, or 'Esc Key'(to windowed only))
  • Auto loading (auto loading the last book when the app executed)
  • Fittng (To fit images up to window size)
  • Spread viewing (two image once)
    • Bound on the right side book(e.g. Japanese Style)
  • Pre page loading(since v0.2.0)
  • Exif Information(since v0.3.0)
  • Show Windows Explorer for the current image
  • Put the current image into your mailer
  • Shader Program Filters(since v0.5.1)
    • Nearest Neighber
    • Bilinear
    • Bicubic (by GPU, obsoleted since v0.9.3)
    • Lanczos (obsoleted since v0.9.3)
    • Bicubic by CPU
    • Lanczos3 by CPU (since 1.0.9)
    • Lanczos4 by CPU (since 1.0.9)
  • Catalog(since v0.6.0)
    • Database for your digital books, can manage thansands of volumes, quick view and search
  • File Associations(since v0.8.3)
  • Retouching(change Brightness, Contrast, Gamma value, since 1.0.8)

Screen operations

You can do screen operations with the main menu, tool bar, mouse button, wheel, keyboard and so on.

Operation  Device Input Remarks
Next Page Keyboard Right Key(→)
Keyboard Space Key
          Mouse Wheel Downward scrolling
          Mouse Forward Button 
          Touch Panel Swipe left at the bottom of the screen
Prev Page Keyboard Left Key(←)
Keyboard BackSpace Key
          Mouse Wheel Upward scrolling
          Mouse Back Button
          Touch Panel Swipe right at the bottom of the screen
First Page Keyboard Home Key
Last Page Keyboard End Key
Next Volume Keyboard Page Down Key open a folder/archive of neighbor
Prev Volume Keyboard Page Up Key open a folder/archive of neighbor
Fullscreen Keyboard F11 Key
          Mouse Wheel Clicked as Center Button
          Keyboard ESC Key Fullscreen mode only
          Touch Panel Swipe up with two fingers
Exit App Keyboard ESC Key not Fullscreen mode only
Scale Up Keyboard Ten keys(+) do nothing with Fitting
Scale Down Keyboard Ten keys(-) do nothing with Fitting
Fitting Keyboard F12 Key
Keyboard Ten keys(-)
          Mouse Right Button + Wheel Clicked
          Mouse Ctrl + Wheel Clicked
Image to trash box Keyboard Delete Key Move the Image of current page to trash box
Rename Image Keyboard F2 Key
Copy Image Keyboard Ctrl+C Key Copy Image of current page
Zoom in  Mouse Wheel Right Button + Upward scrolling
Mouse Wheel Ctrl + Upward scrolling
Zoom out  Mouse Wheel Right Button + Downward scrolling
Mouse Wheel Ctrl + Downward scrolling

System Requirement

  • Operating System
    • Windows Vista,7 or newer
    • Windows Sever 2008 or newer
    • Linux Distributions(Ubuntu, Kubuntu, Fedora, etc..)
  • CPU
    • minimum Dual Core(more better with internal GPU or external GPU)
  • Memory
    • over 1GB free Memory(strongly recommended on x64 architecture)

Looking for contributers!

  • Spanish Speakers
  • French Speakers
  • Chinese Speakers
  • Mac software engeneers

Report issues

Public Project Issues: https://github.com/kanryu/quickviewer/issues

Please report issues as well as configuration details for your working QuickViewer installations at k.kanryu@gmail.com

Thus, your feedback is welcome at KATO Kanryu<k.kanryu@gmail.com>.

Project Source Code Repository


To build from the sourcecodes, to see: HowToBuild.md


This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.