This is an app that allows you to open text files comic files compressed files PDF epub files stored on your Android phone or web server and view them as if they were books.

It does not provide content (novel/manga files) by default.
※ Only Google Play Protect-certified devices are supported.

The main features are as follows.


1. text viewer

- Support TXT CSV SMI SUB SRT
- Support EPUB (text and picture display) support built-in font
- Open compressed text (ZIP RAR 7Z ALZ/EGG) directly
- Changeable fonts (san-serif/serif/custom font) adjust size/spacing/margins etc
- Changeable character encoding (Auto/UTF-8...)
- Changeable text/background color/background image
- Page turning method: arrow/screen tap/screen drag/volume button
- Page turning effect (animation) : roll over slide swipe scroll
- Various Quick navigation: navigation bar dial page input
- Add/rename/sort/lookup bookmarks
- Text-to-Speech: language selection speed control special characters/kanji exclusion
- Slideshow: adjustable speed
- Search text: one by one search all
- Edit text: edit add new file
- Text alignment: left justified 2-sheet horizontal view
- Quick brightness
- Sentence organization


2. comic viewer

- Support JPG PNG GIF BMP WEBP TIFF HEIC AVIF ZIP RAR 7Z CBZ CBR CB7 ALZ/EGG PDF files
- Open compressed pictures (ZIP RAR 7Z ALZ/EGG) directly
- Support zip streaming
- Support double compression
- PDF: zoom up to 8x and sharpen option when zooming in
- Left-right order/shuffle: left -> right right->left (Japanese style) landscape 2-page view
- Support zoom in-out magnify
- Page turning method: arrow/scroll tab/scroll drag/volume button
- Page turning effect (animation): left/right scroll up/down scroll webtoon scroll
Webtoon scroll can smoothly scroll very long pictures.
- Quick navigation: navigation bar dial page input
- Add/rename/sort/lookup bookmarks
- Slideshow: set in seconds
- Keep picture zoomed in
- Support animated gif/webp/avif
- Support picture rotation (manual rotation Auto rotation of JPEG/Webp)
- Double filter(inversion sepia sharpen ...)
- Support cropping edge


3. file function

- Color mark of reading history: red(recent) green(partially read) blue(fully read)
- Picture Preview: Tiled(Large Small) Detail
- Selectable file extension
- Sorting : Name Size Date
- Support delete rename copy move
- Searching: file name content picture
- Support uncompressing manually
- Support read or write of USB storage(FAT32NTFSexFAT)


4. other

- Theme/Color
- Support language selection (Korean Chinese Japanese English ...)
- Support Auto Synchornization of reading history
- Support SFTP (secure file transport protocol)
- Support FTP (file transport protocol)
- Support SMB (Windows Shared Folder Samba)
- Support WebDAV
- Support Google Drive
- Support Dropbox
- Support MS OneDrive
- Password lock
- Support S-pen of Samsung Note 9 and above: page turning pausing slideshow
- Headset button support: pausing slideshow
- Media button (Bluetooth earphone etc.) support: pausing TTS
- Backup/restore settings (Maru Arar compatible)
- Shortcut management (e.g. add/delete shortcut of other apps)