Maru

Simple! Powerful! ComicViewer/TextReader/PDFViewer/EpubReader

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 ed.

The main features are as follows.

1. text viewer

- TXT, CSV, SMI, SUB, SRT

- EPUB (text and picture display), 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

- 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

- zip streaming

- 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

- 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

- animated gif/webp/avif

- picture rotation (manual rotation, Auto rotation of JPEG/Webp)

- Double filter(inversion, sepia, sharpen, ...)

- 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

- delete rename, copy, move

- Searching: file name, content, picture

- uncompressing manually

- read or write of USB storage(FAT32,NTFS,exFAT)

4. other

- Theme/Color

- language selection (Korean, Chinese, Japanese, English, ...)

- Auto Synchornization of reading history

- SFTP (secure file transport protocol)

- FTP (file transport protocol)

- SMB (Windows Shared Folder, Samba)

- WebDAV

- Google Drive

- Dropbox

- MS OneDrive

- lock

- S-pen of Samsung Note 9 and above: page turning, pausing slideshow

- Headset button : pausing slideshow

- Media button (Bluetooth earphone, etc.) : pausing TTS

- Backup/restore settings (Maru, Arar compatible)

- Shortcut management (e.g. add/delete shortcut of other apps)