Kobo Sage Screensaver Size: 1440 × 1920 px
The Kobo Sage screensaver and wallpaper size is 1440 × 1920 pixels. That is a 8-inch e-ink panel with a 1:1.33 aspect ratio at 300 ppi. Export at exactly those dimensions and the image fills the screen with no stretching, cropping or black bars.
An 8-inch 300 ppi panel — one of the sharpest large screens here. It handles detailed artwork that would turn to mush on a 6-inch or 227 ppi screen.
Use the resizer below to crop any photo or artwork to those exact dimensions — it opens with the Kobo Sage already selected, runs entirely in your browser, and never uploads your image anywhere.
Resize an Image for the Kobo Sage
Step 1: Select Your Device
Selected device dimensions: 1440 × 1920 pixels
Aspect ratio: 1:1.33
Step 2: Upload Your Image
Drag and drop your image here
or click to browse files
Supports: JPG, PNG, GIF, WebP up to 10MB
Upload an image to start editing
Choosing an Image for the Kobo Sage
Getting the pixel dimensions right is only half of it. This panel has its own characteristics, and they change what kind of source image holds up on screen.
- At 300 ppi this panel resolves fine detail well. Thin linework, small lettering and subtle tonal gradients all survive, so detailed illustration and photography both work.
- The 1:1.33 ratio is close to a standard portrait photograph, so most vertical photos crop to fit with little loss. Landscape source images will lose a lot of their width — crop deliberately rather than letting the frame decide.
- E-ink is greyscale, so colour contrast disappears on screen. Check that your image still separates into clear light and dark areas once colour is removed — two colours of similar brightness will merge into one flat tone.
How to prepare an image for e-ink: contrast, banding and dithering →
Kobo Sage Screen Specifications
| Manufacturer | Rakuten Kobo |
|---|---|
| Screen size | 8-inch |
| Screensaver size | 1440 × 1920 px |
| Aspect ratio | 1:1.33 |
| Pixel density | 300 ppi |
| Display type | Greyscale e-ink |
| Recommended format | PNG or JPG |
How to Set a Custom Screensaver on the Kobo Sage
Kobo reads sleep-screen images from a folder you create yourself. Put your resized images in a folder named exactly `screensaver` inside the hidden `.kobo` folder, then enable the two sleep-screen settings.
- 1
Resize the image
Size the image to your Kobo's exact screen resolution using the resizer above, then download it.
- 2
Connect the Kobo by USB
Plug the Kobo into your computer and tap Connect on the prompt that appears on the device.
- 3
Create the screensaver folder
Open the hidden .kobo folder on the Kobo drive and create a folder named exactly `screensaver`, all lowercase. On Windows enable Show hidden files; on macOS press Command + Shift + period in Finder.
- 4
Copy your images across
Copy the resized images into .kobo/screensaver, then safely eject the Kobo.
- 5
Enable the sleep-screen settings
On the Kobo, open Settings > Energy saving and privacy and enable both "Show current read" and "Show book covers full screen".
Note: The folder name is case-sensitive. If the screensaver does not appear, re-check the folder spelling and confirm both settings are enabled.
Kobo Sage Screensaver FAQ
- What size should a Kobo Sage screensaver be?
- A Kobo Sage screensaver should be 1440 x 1920 pixels — the device's exact panel resolution. That is a 8-inch screen with a 1:1.33 aspect ratio at 300 ppi. Matching these dimensions means the image fills the screen with no stretching, cropping or black bars.
- What format should the image be in?
- PNG or JPG both work on the Kobo Sage. PNG keeps sharp edges cleaner on text and line art, which suits e-ink. Because the screen is greyscale, high-contrast images with simple composition reproduce far better than busy colour photographs.
- Does the Kobo Sage support custom screensavers?
- Kobo reads sleep-screen images from a folder you create yourself. Put your resized images in a folder named exactly `screensaver` inside the hidden `.kobo` folder, then enable the two sleep-screen settings.
- Can I use the same image on other e-readers?
- Not without re-cropping. The Kobo Sage is the only supported device using a 1440 x 1920 panel, so an image sized for it will be cropped or letterboxed on any other model. Re-export at the target device's own resolution instead.