By following this guide, you have successfully performed a clean, verified installation of ImageConverter 565 v23. You should now be able to convert images to RGB565 arrays for your TFT/LCD projects, embedded GUI, or game development on constrained hardware.
Recap of key steps:
Now that the tool is ready, explore batch conversion and CLI scripting to speed up your asset pipeline. For further reading, check the official v23 changelog and the community wiki page on dithering optimization for RGB565.
Need help? Join the official ImageConverter 565 Discord or open an issue on the GitHub tracker. Always mention your OS version and the exact install error message.
This article was accurate as of 2026 for ImageConverter 565 v23. Always refer to the official documentation for the latest updates.
ImageConverter 565 v2.3 is a utility tool typically bundled with the UTFT (Universal TFT Display Library)
for Arduino. It is used to convert standard image files (like .jpg or .png) into a raw pixel format or C-style arrays that microcontrollers can easily read and display on TFT screens. Arduino Forum How to Install and Use
Since this is a standalone tool included within a library, you don't "install" it like a standard Windows app; rather, you locate it within your library folders. Locate the Tool : After downloading and installing the UTFT library , navigate to the following folder on your computer: Documents/Arduino/libraries/UTFT/Tools Run the App : Look for a subfolder named ImageConverter565 and run the executable (typically ImageConverter565.exe Convert an Image
Open your image (ensure it matches your screen's resolution). Select the output format:
: Best for small icons stored directly in the Arduino's memory (PROGMEM). : Best for large images stored on an SD card. Implementation If using a file, move it to your Arduino sketch folder and use #include "filename.c" If using a file, copy it to an SD card and use the UTFT_tinyFAT library to load it. Arduino Forum A Useful "Success Story"
In the DIY community, this tool is the "unsung hero" for creating custom graphical user interfaces (GUIs). How to Show BMP Convert .c MCUFriend 3.5 inch TFT
ImageConverter 565 (v2.3) is a legacy Windows tool typically bundled with the UTFT library by Henning Karlsen. It is used to convert standard images into raw RGB565 format or C arrays for use with microcontrollers like Arduino to drive TFT displays. Installation & Location
There is no formal "installer" for this version; it is a standalone executable. imageconverter 565 v23 install
Default Location: If you have the UTFT library installed, look in the Tools folder of the library directory (e.g., Documents/Arduino/libraries/UTFT/Tools/). Executable Name: ImageConverter565.exe.
Manual Download: You can often find it within the UTFT library repository on GitHub or on DisplayModule's support pages. Basic Usage Steps
Preparation: Resize your image (e.g., to 320x240) using an external editor before converting, as the tool does not always handle resizing well. Conversion: Launch ImageConverter565.exe. Select your 24-bit .bmp or .jpg file.
Choose the output format: .c for internal flash memory (using PROGMEM) or .raw for loading from an SD card. Implementation:
C Array: Place the generated .c file in your sketch folder. Reference it in your code using extern unsigned short image_name[]; and display it using myGLCD.drawBitmap().
Raw File: Save the .raw file to an SD card and use the UTFT_tinyFAT library to load it. Modern Alternatives
Because the original Windows tool can be buggy on modern OSs, many users now prefer online or cross-platform tools:
Online Converters: Henning Karlsen's Original Online Tool (often down) or Garry's Image to RGB565 Converter.
Command Line: ffmpeg can perform this conversion on Linux/Mac using -pix_fmt rgb565be.
Are you experiencing a specific error during conversion, or do you need help coding the bitmap display?
ImageConverter 565.url at master · ivanseidel/UTFT - GitHub
File metadata and controls * [InternetShortcut] * URL=http://www.henningkarlsen.com/electronics/t_imageconverter565.php. * IDList= GitHub DisplayModule's Image Converter (FREE download) By following this guide, you have successfully performed
ImageConverter 565 v2.3 is a specialized utility frequently used by developers and hobbyists working with embedded systems, particularly those using TFT displays with Arduino, STM32, or ESP32 microcontrollers. This tool converts standard image formats (like BMP, JPG, or PNG) into the RGB565 color format required by low-power LCD controllers.
Here is a comprehensive guide on how to install and set up ImageConverter 565 v2.3 for your project. What is ImageConverter 565 v2.3?
Most embedded displays cannot process 24-bit "True Color" images due to memory constraints. ImageConverter 565 reduces the color depth to 16 bits (5 bits for Red, 6 for Green, and 5 for Blue). Version 2.3 is favored for its stability and its ability to export images directly into C-style arrays (.c or .h files), making them "ready-to-code." Step 1: System Requirements
Before installation, ensure your environment meets these criteria: Operating System: Windows 7, 10, or 11 (32/64-bit).
Framework: Many versions require .NET Framework 3.5 or 4.0. If you are on Windows 10/11, you may need to enable this in "Windows Features."
Permissions: You will likely need Administrative rights to register specific .dll files during the process. Step 2: Downloading the Software
Since this tool is often distributed as part of hardware libraries:
Check your display manufacturer’s website (e.g., Waveshare, BuyDisplay, or Adafruit).
Look for "Development Tools" or "Resource Downloads" related to your specific LCD model. Download the .zip archive containing the v2.3 executable. Step 3: Installation Process
Extract the Files: Unzip the downloaded folder to a permanent location (e.g., C:\Tools\ImageConverter565). Avoid keeping it in a temporary folder.
Run as Administrator: Right-click the ImageConverter565.exe file and select Run as Administrator. This ensures the program can write temporary conversion files to your disk.
Compatibility Mode (Optional): If the application fails to launch, right-click the executable, go to Properties > Compatibility, and select Windows 7. Step 4: Converting Your First Image Once installed, follow these steps to verify it works: Open the Tool: Launch the .exe. Load Image: Click "Open" and select a standard image file. Now that the tool is ready, explore batch
Set Resolution: Ensure the "Output Size" matches your LCD resolution (e.g., 240x320).
Export Format: Choose the output format. For most IDEs (like Arduino or Keil), select C-Header (.h) or C-Source (.c).
Convert: Click "Save" or "Convert." The tool will generate a text file containing a large array of hexadecimal values representing your image. Troubleshooting Common Issues
"Missing DLL" Error: If you see a .dll error, you may need to install the Visual C++ Redistributable packages.
Upside-Down Images: Some displays require the data to be "flipped" during conversion. Look for a "Vertical Flip" checkbox in the v2.3 interface before exporting.
Color Inversion: If your reds appear blue, toggle the RGB/BGR setting in the converter.
By following this guide, you can successfully integrate custom graphics into your embedded hardware projects. c file into an Arduino sketch?
If you currently use v22, do not simply overwrite it. Follow this upgrade path:
This is the most common environment for this tool. Follow these exact steps:
which imgconv565
imgconv565 --version
Expected output: ImageConverter 565 v23 (build 1042)
ImageConverter 565 v23 is a specialized tool for converting images to/from RGB565, RGB555, ARGB4444, and other embedded graphics formats. Commonly used in embedded systems, IoT displays, and game development.
For engineers using Raspberry Pi or embedded Linux build systems: