ImageMagick Guide
TRMNL supports BMP3 and PNG images natively, starting with FW v1.5.2. Below are some tips to generate TRMNL compatible images for DIY devices or Alias/Redirect plugin applications.
Generating a BMP3 image
Convert command
magick input.png -monochrome -colors 2 -depth 1 -strip bmp3:output.bmp
Identify command
% magick identify output.bmp
output.bmp BMP3 800x480 800x480+0+0 1-bit sRGB 2c 48062B 0.020u 0:00.001
Please note that the output of above needs to match exactly with your file.
Generating a PNG image
Convert command
magick input.png -monochrome -colors 2 -depth 1 -strip png:output.png
Identify command
% magick identify output.png
output.png PNG 800x480 800x480+0+0 8-bit Grayscale Gray 2c 1607B 0.000u 0:00.000
Last updated