Imageconverter 565 | V2.3
The main purpose of v2.3 is to convert 24-bit or 32-bit images into a specialized 16-bit, 565-color format (5 bits for Red, 6 for Green, 5 for Blue). This format reduces the memory footprint of the image by half compared to standard 24-bit images, allowing high-quality graphics to be stored in the flash memory of microcontrollers. Why RGB565?
下表总结了这两种流程的核心差异：
Use a PNG with transparency if your display driver supports a transparent color index. imageconverter 565 v2.3
#include TFT_eSPI tft = TFT_eSPI(); extern const unsigned short myImage_320x240[]; void setup() tft.init(); tft.setRotation(1); // Draw raw 16-bit RGB565 data tft.drawRGBBitmap(0, 0, myImage_320x240, 320, 240); void loop() {} Use code with caution. Troubleshooting Common Conversion Errors Inverted or "Alien" Colors
Before opening the converter, resize your image to the exact resolution of your target display (e.g., 240x320 or 128x128). Microcontrollers lack the processing power to scale images on the fly efficiently; doing it beforehand saves CPU cycles. Step 2: Configure the Conversion Settings The main purpose of v2
Enter —a niche but powerful utility that has become a quiet industry standard for converting standard images into raw RGB 565 data. Whether you are programming an STM32, working with an ESP32 driving a small display, or developing firmware for a wearable device, understanding this tool can save you hours of manual pixel manipulation.
The original host, henningkarlsen.com , has largely transitioned to Rinky-Dink Electronics . Microcontrollers lack the processing power to scale images
Enter . This utility has become a staple for developers who need to bridge the gap between standard desktop image formats (like PNG or JPEG) and the specialized hardware requirements of small TFT and OLED screens.
It allocates 5 bits for Red , 6 bits for Green (the human eye is most sensitive to green), and 5 bits for Blue . This reduces the file size by 33% while retaining excellent visual quality.
指定输出路径，点击“开始转换”。工具将生成一个包含 const unsigned short 类型数组的头文件或C文件。你可以直接通过 #include 指令将该文件引入到你的Arduino或嵌入式工程中进行调用。