Here is the incredible Viewer. Ental Viewer!

Don't wait for unzipping your comics!
Double-compressed files release in less than three seconds!!
[5 times faster rate guarantee]
Ental Viewer can unzip basic ZIP file and Double-compressed ZIP files!
5 times more faster than other viewers' speed is guaranteed.
** Execution speed may vary depending on the user's environment.

Broad Format Support
Compressed cartoons, images, PDF, a variety of formats are supported.
[Essential functions are Equipped ]

Moving to folder, brightness control, screen ratio fixed, auto-rotation, essential features are equipped for the enthusiastic viewer users.
Finally
Unlike other free viewers, Ental Viewer has no ads.
Download now! The free Ental Viewer is better than other paying viewers.

[Supported files]
1. ZIP, CBZ, Double-compressed files
2. JPG, PNG, other various image files.
3. PDF

[Features]
1. Compressed file auto-decompress.
2. Double-Compressed file auto-decompress.
3. PDF viewer
4. Moving to folder function while running viewer(moving to each books)
5. Bookmark function
6. Recent view list provide.
7. WiFi transfer function
8. Read Direction setting
9. Screen enlarge and fix function
10. Brightness control
11. Auto-rotation setting
12. Horizontal screen pages division
13. Following view function
14. Display page
15. page riffle effect