Batch mode

Drop many images and get a sleep.zip with the right folder and safe file names.

Device & format

Device

X4 480×800 X4 Pro 480×800 X3 528×792

Firmware

Output format

Most compatible with stock firmware. Pixels are pre-dithered to 4 gray levels.

Dithering

Photos get Floyd–Steinberg, line art gets a clean threshold.

Folder in the zip

Sizing

Fill (crop)Fit (white bars)Stretch

Turn landscape images to fill the portrait screen

For precise cropping of one image, use the wallpaper maker.

Adjustments (all images)

Brightness 0

Contrast 0

Gamma 1.00

Sharpen 0

Levels: black point 0

Levels: white point 255

Invert

Text, border & badge (all images)

Text

Border

Reading-status badge

How to install

Image size: 480 × 800 px (Xteink X4), portrait
Folder: /sleep/ at the SD-card root (also seen: /.sleep/)
Formats: 24-bit BMP, 1-bit BMP
Menu: Settings → Display → Sleep screen → Custom

1 Turn the reader off and take out the SD card (or connect it by USB).
2 Create a folder named "sleep" at the root of the card, if it does not exist.
3 Copy your .bmp files into it. The size must match your model exactly.
4 Put the card back and choose Settings → Display → Sleep screen → Custom.

Stock firmware does not read .pxc files.

Some guides use ".sleep" instead of "sleep". If your images do not show, rename the folder.

Colophon

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Set in Literata and IBM Plex. Not affiliated with Xteink. Open source under the MIT license. Firmware flashing is handled by the CrossPoint web flasher.

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