The resulting file is typically 2/3 the size of the original 24-bit source, saving critical memory and improving rendering speed. How to Access the "Full Piece"
A 320x240 display requires 320 240 2 = 153,600 bytes (150KB). That may exceed your MCU's flash. Solutions:
Choose C-array if you want to compile the image directly into your code, or Binary if you are storing it on an SD card.
Unlocking Embedded Graphics: A Comprehensive Guide to ImageConverter 565 v2.3
Once converted, you can easily load the image array into popular open-source embedded display libraries. UTFT / Adafruit_GFX Example imageconverter 565 v2.3
: Using 16-bit 565 format reduces the memory footprint compared to standard 24-bit or 32-bit images, which is critical for devices with limited RAM. How to Use It Select Image : Open your target photo in the tool.
: Pre-processing images into the correct write order allows MCUs to use faster drawing algorithms since they no longer need to perform real-time color calculations.
，当MCU通过摄像头采集RGB565图像数据并发送至上位机后：
Converts multiple images simultaneously to save development time. The resulting file is typically 2/3 the size
Why use when there are many free online converters available? The answer lies in the specific output format. Generic tools, like those found on imageconverter.dev, are excellent for converting between standard formats for everyday use but do not generate C arrays for microcontrollers.
If you want to optimize your UI workflow further, let me know: What (ESP32, Arduino, STM32) are you using?
if you want to paste the data directly into your header files.
array. This array is stored in the microcontroller’s flash memory ( ) to save RAM, as seen in community discussions on the Arduino Forum Technical Summary Output Header Solutions: Choose C-array if you want to compile
Any questions about palette optimization or custom output templates – ask below.
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.
#include #include // Define your screen UTFT myGLCD(ILI9341, 38, 39, 40, 41); void setup() myGLCD.InitLCD(); file.setFATType(FAT16); // or FAT32 // Load and draw image from SD card myGLCD.drawBitmap(0, 0, 320, 240, "image.raw"); void loop() {} Use code with caution. Alternative Tools in 2026