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(FAT32,NTFS,exFAT)

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)

Overview

Maru is a comprehensive and versatile comic book reader and text viewer for Windows, macOS, and Linux. It offers a wide range of features that cater to both casual and advanced users, making it an ideal choice for reading comics, manga, and text documents.

Key Features

* Extensive File Support: Maru supports a vast array of image and text file formats, including CBZ, CBR, PDF, EPUB, MOBI, DJVU, and TXT.

* Customizable Interface: The user interface can be extensively customized to suit individual preferences, including font size, background color, and toolbar layout.

* Advanced Reading Options: Maru provides a range of reading options, such as single-page or continuous scrolling, zoom and pan functionality, and bookmarks for easy navigation.

* Image Enhancement Tools: Users can enhance the visual quality of comics using various tools, including brightness and contrast adjustment, color correction, and noise reduction.

* Text-to-Speech Functionality: Maru can convert text documents into audio files, enabling users to listen to text content while multitasking or on the go.

* Multiple Viewing Modes: Comics can be viewed in different modes, including single-page, double-page, and vertical scrolling.

* Library Management: Maru allows users to organize their comic and text collections into virtual libraries, making it easy to find and manage files.

* Annotation and Editing: Users can add annotations, highlights, and notes to comics and text documents for reference or study purposes.

* Cross-Platform Compatibility: Maru is available for Windows, macOS, and Linux, ensuring compatibility across multiple devices.

User Interface

Maru's user interface is intuitive and customizable. The main window consists of a navigation panel on the left, a viewing area in the center, and a toolbar at the top. The navigation panel provides quick access to the library, bookmarks, and file management options. The toolbar contains icons for common actions, such as opening files, adjusting zoom, and adding annotations.

Reading Experience

Maru offers a smooth and immersive reading experience. Comics can be read in single-page or continuous scrolling mode, with adjustable zoom and pan functionality. The text-to-speech feature allows users to listen to text content, making it ideal for audiobooks or multitasking.

Additional Features

In addition to its core features, Maru offers a range of additional features, including:

* Batch Conversion: Convert multiple files between supported formats simultaneously.

* Metadata Editing: Edit metadata information for comics, such as title, author, and genre.

* Cover Flow View: Browse comics by their covers for a more visual experience.

* External Viewer Support: Open files using external applications, such as image editors or PDF readers.

* Cloud Storage Integration: Access and manage comics stored on cloud services, such as Google Drive and Dropbox.

Conclusion

Maru is a powerful and feature-rich comic book reader and text viewer that provides a comprehensive and customizable reading experience. Its extensive file support, advanced reading options, and user-friendly interface make it an ideal choice for both casual and avid readers.