Free · CrossPoint & CrossInk · X4 / X3
CrossPoint sleep screen makerCustom, random or see-through.
CrossPoint shows a custom sleep screen from a BMP on the SD card: sleep.bmp in the root, or a .sleep folder for a random image each time. This tool makes that BMP at your screen's exact size, dithered to 4 grays, or a transparent PNG overlay for Sleep Screen → Transparent.
- Pixel-perfect fit with no black bars
- True e-ink preview
- Photos never leave your device
- Xteink X4 · X4 Classic
- 480 × 800
- 4 grays
- .bmp
Drag the photo to reposition · live preview matches your screen
Sample: Girl with a Pearl Earring, Johannes Vermeer (public domain)
No picture that fits?
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.
Keeps just the person, pet or object on plain paper. Runs on your device; the first use is a one-time 59 MB download.
Lower strength keeps soft edges like hair and fur. Keep background fades the old background in instead of erasing it.
Fine-tune
CrossPoint / CrossInk: copy sleep.bmp to the root of the SD card (or several BMPs into a folder named .sleep), then Settings → Display → Sleep Screen → Custom.
Stock firmware: copy the BMP to any folder on the card. On the reader, Open Folder → pick the image → tap the preview → Set as Power-off Screen.
Something not working, or an idea? Tell us. We read everything.
How it works
1Pick X4 or X3
X4 and X4 Pro are 480×800 pixels, X3 is 528×792. CrossPoint's guide recommends exactly these sizes.
2Make it work in 4 grays
Choose a Look and nudge contrast until the preview reads well. Remove the background and pick See-through paper for a transparent overlay.
3Copy it, then set the mode
sleep.bmp goes in the SD card root, or several BMPs in .sleep. Then Settings → Display → Sleep Screen → Custom (or Transparent for an overlay).
Every CrossPoint Sleep Screen mode
Found under Settings → Display → Sleep Screen.
| Mode | What it shows |
|---|---|
| Dark (default) | The CrossPoint logo on black. |
| Light | The same logo on white. |
| Custom | Your BMP from the SD card. Falls back to Dark if none is found. |
| Cover | The cover of the open book. Falls back to Dark if no book is open. |
| Cover + Custom | The book cover while reading, your custom images otherwise. |
| Quick resume | The last page you read, with a moon icon, so waking up returns straight to it. |
| Transparent | A PNG or BMP drawn over the current screen. |
| None | A blank screen. |
Where the files go
| Mode | One image | Random rotation |
|---|---|---|
| Custom, Cover + Custom | sleep.bmp in the root (wins over the folder) | BMPs in .sleep (or sleep) |
| Transparent | sleep-overlay.png or sleep-overlay.bmp in the root | PNGs or BMPs in .sleep-overlay (or sleep-overlay) |
Cover modes have two more settings: Cover Mode (Fit adds white borders, Crop fills the screen) and Cover Filter (None keeps grays, Contrast is pure black and white, Inverted swaps them). You can also set any BMP as the sleep screen straight from the image viewer in Browse Files.
Why make the BMP here instead of on the reader?
CrossPoint does its own conversion when it has to, for example when it turns a large EPUB cover into a sleep screen, and its guide notes that can take around ten seconds for a tall image. Its cover filters are blunt: grays, or pure black and white. Making the file at the exact size with your own dithering means it shows instantly and looks the way the preview does.
Overlays have their own rules (8-bit PNG, real transparency, no white halo). The transparent overlay guide covers them. For the full settings list, see CrossPoint's user guide.
Common questions
›How do I set a custom sleep screen on CrossPoint?
Copy a BMP named sleep.bmp to the root of the SD card, or put several BMPs in a folder named .sleep in the root. Then go to Settings → Display → Sleep Screen and choose Custom.
›What size and format does CrossPoint want?
An uncompressed 24-bit BMP at the screen's resolution: 480×800 for the X4 and X4 Pro, 528×792 for the X3, portrait. This tool outputs exactly that.
›Can CrossPoint pick a random sleep screen each time?
Yes. Put any number of BMPs in a .sleep folder in the root of the SD card; CrossPoint picks one at random every time it sleeps. A folder named sleep (no dot) works too.
›I added a .sleep folder but it always shows the same picture
A sleep.bmp in the root takes priority over the folder. Delete or rename the root sleep.bmp and the random rotation starts.
›It still shows the CrossPoint logo
Custom falls back to the Dark logo screen when it finds no usable image. Check the mode is Custom, the file is a real BMP (not a renamed JPG or PNG) and it is named sleep.bmp in the root or sits inside .sleep.
›What does Cover + Custom do?
While you are reading, the sleep screen shows the current book's cover. Anywhere else, such as the home screen, it falls back to your custom images.
›Can the sleep screen be transparent, over the page I was reading?
Yes, on CrossPoint 1.6 or newer and CrossInk. Choose Sleep Screen → Transparent and copy sleep-overlay.png to the root, or several PNGs into .sleep-overlay. Use a PNG with real transparency: opaque white pixels cover the text under them.
›Does this work with CrossInk?
Yes. CrossInk is a fork of CrossPoint and reads the same sleep.bmp, .sleep and overlay files.
›I can't see the .sleep folder on my Mac
Finder hides names that start with a dot. Press Cmd + Shift + . to show them, or name the folder sleep instead.
›Is it free?
Yes, free with no sign-up and no watermark. Your images never leave your browser.