einktools

Xteink X4 · 24-bit BMP

Xteink X4 wallpaper size480 × 800 px

The Xteink X4 sleep screen is a 24-bit BMP at 480×800 pixels. Because the e-ink screen shows only 4 shades of gray, pre-dithering your image keeps details and text clear instead of turning blotchy.

  • Pixel-perfect fit with no black bars
  • True e-ink preview
  • Photos never leave your device
Loading preview…
  • Xteink X4 / X4 Pro
  • 480 × 800
  • 4 grays
  • .bmp

Drag the photo to reposition · live preview matches your screen

Sample: The Great Wave, Hokusai (public domain)

No picture that fits? Browse free artworks →

Don't see your model? Take a screenshot on your reader to find its pixel size (on Kindle, tap opposite corners simultaneously), then choose Custom.

Fit
100%
0
15
Look

All the grays your screen can show. Closest to the original.

25
  1. Copy sleep.bmp to the root of the SD card (or several BMPs into a folder named .sleep).
  2. Settings → Display → Sleep Screen → Custom.

Something not working, or an idea? Tell us. We read everything.

How it works

  1. The maker with a Kindle Paperwhite selected, the photo shown inside a to-scale device frame
    1

    Use the exact size

    480×800 pixels, portrait. Anything else gets scaled, padded with bars, or cropped by the device.

  2. Dragging a quote on the preview, with the center guide line snapped
    2

    Tune for e-ink

    With only black, two grays and white, a normal photo turns blotchy. Dithering trades gray levels for patterns of dots. The Photo look spreads them evenly, Crisp keeps whites cleaner and edges bolder, Poster and Ink go fully graphic.

  3. The download button and the install steps for the selected Kindle
    3

    Install

    24-bit BMP: sleep.bmp in the SD card root, or several in /.sleep. Step-by-step instructions are under the download button.

What it looks like on the Xteink X4

The same picture on a phone and on the Xteink X4 screen at 480×800
Rendered with this tool at 480×800: what you see in the preview is what the Xteink X4 shows.

Xteink X4 at a glance

ModelsXteink X4, X4 V2 (Classic) and X4 Pro
Wallpaper size480×800 px (portrait)
Screen4.3-inch, 4 grays
How it's installed24-bit BMP: sleep.bmp in the SD card root, or several in /.sleep
Where the files go on your Xteink X4's SD card
SD card/
├── sleep.bmp   ← one image: shown every time
└── .sleep/   ← or many: a random one each time (sleep/ also works)
    ├── wave.bmp
    └── cat.bmp
The same photo dithered three ways for a 4-gray Xteink screen: Photo, Crisp and Poster
Photo keeps gradients, Crisp keeps whites clean, Poster flattens to 4 grays.

Stock firmware vs. CrossPoint

Both read sleep.bmp from the root. CrossPoint also reads a .sleep folder (one random image per sleep) and adds Cover + Custom, which shows the current book's cover while reading.

Simple images win

At 480×800 with 4 grays, bold illustrations, silhouettes and line art look sharper than busy photos.

Other sizes and models: see the full e-reader screen size chart.

Common questions

›My X4 still shows the default logo

The file must be named sleep.bmp in the SD card root (or be inside .sleep), and Sleep Screen must be set to Custom in Settings → Display.

›The image has borders or is squashed

It isn't 480×800 portrait. Re-make it at that size.

›JPG or PNG doesn't work

Custom sleep screens must be BMP. Uncompressed 24-bit is the safe choice and is what this tool outputs.

›The .sleep folder doesn't appear on my Mac

Folders starting with a dot are hidden in Finder. Press Cmd + Shift + . to show them, or name the folder sleep instead.