rImageShield

A simple and easy-to-use image message embedder.

What can I do with rImageShield?

With rImageShield you can protect/sign your images embedding custom copyright/license messages.

Message data distribution inside image can be customized, following an Uniform or Pseudo-Random distribution around the pixels; multiple other parameters can also be configured. Message can be compressed and encrypted with a password for maximum security.

Using rImageShield messages can be recovered, it automatically detects if one image contains a message on loading.

Features

• Multiple input image file formats: .png, .qoi, .bmp, .tga, .raw
• Editable text input message, up to 256 characters
• Message compression and encryption support
• Uniform and PRNG data distribution settings
• Detailed image, message and distribution information
• Multiple message visualization modes: ASCII, Hexadecimal, Grayscale
• Visual shield watermark option available
• Export image as .png, .qoi or .raw
• Multiple UI styles supported, select your best style
• Command-line support for image message recovering
• Completely portable (single-file, no-dependencies)

Basic Usage

Steps to add a message to an image:

1. Load an image by drag&drop or press the Open File button on top toolbar
2. Edit text message on provided textbox, grid shows message bytes details
3. Config message compression/encryption options (for extra data protection)
4. Config message data distribution options on right panel, uniform or pseudo-random
5. Export image with embedded message (.png, .qoi or .raw)

Keyboard/Mouse Shortcuts

• F1 - Show Help window
• F2 - Show About window
• F3 - Show Issue Report window

File Options

• LCTRL + O - Load image file
• LCTRL + S - Save/Export image file
• LCTRL + X - Close image file

Message Controls

• LCTRL + R - Reset message to default
• LCTRL + C - Copy message to clipboard
• LCTRL + V - Paste message from clipboard

Image controls

• MOUSE LEFT BTN - Image Panning
• MOUSE WHEEL - Zoom in/out
• UP-DOWN-LEFT-RIGHT - Move Image
• F - Zoom and center image
• LCTRL + MOUSE MBTN + UP - Soft zoom in
• LCTRL + MOUSE MBTN + DOWN - Soft zoom out
• LCTRL + LSHIFT + MOUSE WHEEL - Snap zoom
• ESCAPE - Close Window/Exit

Command-line

WARNING: rImageShield command-line interface only supports message loading.

Batch image message embedding functionality is provided as a separate license.

    USAGE:
        > rimageshield [--help] --input <imagefile.ext> --password <password>
    OPTIONS:
        -h, --help                      : Show tool version and command line usage help
        -i, --input <imagefile.ext>     : Define input file for message loading
                                        : Supported image formats: .png, .qoi
        -p, --password <password>       : Define password for encryption (max 16 bytes)
    EXAMPLE:
        > rimageshield --input image .png --password "123456"

Technologies

This tool has been created using the following open-source technologies:

• raylib - A simple and easy-to-use library to enjoy videogames programming
• raygui - A simple and easy-to-use immediate-mode-gui library
• rpng - A simple and easy-to-use library to library to manage png chunks
• tinyfiledialogs - File dialogs for desktop platforms
• monocypher - An easy to use, easy to deploy crypto library

Handmade Software

rImageShield is handmade software, it has been meticulously developed using the C programming language, with great attention put on each line of code written. This approach usually results in highly optimized and efficient code, but it is also more time-consuming and require a higher level of technical skills. The result is great performance and small memory footprint.

rImageShield is self-contained in a single-executable of about 1 MB, it could fit on a floppy disk.

rImageShield could be customized on demand for corporate users, if your company needs a custom version, just get in touch: ray[at]raylibtech.com

Issues & Feedback

You can report tool issues and feedback at https://github.com/raylibtech/rtools

License

The use of rImageShield desktop application is subject to the terms and conditions of the End User License Agreement. By using rImageShield, the user agrees to be bound by the terms of the EULA.

Check included End User License Agreement document for details (EULA.txt).

Copyright (c) 2022-2024 raylib technologies (@raylibtech)