Readbook - Text/Image Viewer 2.1.5

This application serves as a comprehensive viewer for large-capacity text files and scanned images, featuring a range of functionalities designed to enhance user experience.

1. Convenient Explorer

• The user interface includes a list view equipped with various filtering and sorting options, along with a custom word filter.
• Users can easily rename or delete folders and files.
• A single click allows users to perform a Google or Naver review search for the selected file name.
• Integration with Google Drive is supported.
• Compatibility with SD cards is also provided.
• The application includes a robust file search function.
• Preview thumbnails are available for all files.

2. User-Friendly Theme

• Twelve preset themes are included for user selection.
• Customization options allow changes to text and background colors, as well as font styles.
• Users can adjust font size, line spacing, and margins to suit their preferences.
• Compensations for spaces and line breaks enhance overall readability.
• The application ensures that incomplete text displays do not occur.

3. Viewer

• The application supports both horizontal and vertical viewing modes.
• Users can efficiently navigate through pages and perform text searches within documents.

4. Control Functions

• Navigation between pages can be accomplished using volume keys.
• A screen scrolling function is available for smooth navigation.
• Touch input allows for direct page movement.
• The application prevents automatic screen timeout during use.

5. Text-to-Speech (TTS)

• The TTS functionality includes options for changing the engine, voice, speed, and volume.
• A notification user interface is provided for ease of use.
• Support for a timer function and an option to skip Hanja characters is available.

6. Scan Image Viewer

• The application automatically selects split mode or two-page mode for scanned images.
• Filters including dark, light, and clear modes enhance viewing experiences.
• A dedicated dark theme option is also included.

7. Additional Features

• The application remembers the last viewed file and location for quick access upon reopening.
• A recent file list functionality assists users in managing their documents effectively.
• A bookmarking feature allows users to highlight important sections for future reference.

Please report any errors or inconveniences through the [Side Menu > Send Inquiry Email] option in the app.

[Permission Description]

• File reading permission: Enables reading files from all paths on the device.
• Access to all files: As per Google policy from OS 11 onwards, 'File reading permission' has been replaced by 'Access to all files.'