X4 Pro Lock Screen Converter
Convert images into
480 × 800, 24-bit uncompressed BMP
files using
Floyd–Steinberg dithering
, optimized for reliable rendering on the Xteink X4 Pro.
View on GitHub
Single HTML file
No server required
Mobile friendly
Client-side only
BMP export
Settings
Drop images here
or choose files below
PNG, JPG, WebP and BMP are supported by most browsers.
Resize mode
Cover — crop to fill 480×800
Contain — preserve image with white margins
Width
Height
Brightness
0
Contrast
0
Invert black / white
Process selected images
Download all processed BMPs
Clear everything
Results
Preview and download each processed BMP.
No files loaded.