How do I add custom screensavers on Kobo?

Connect the Kobo over USB, create a folder named screensaver inside .kobo, and copy PNG files sized to your model. Enable full-screen covers in Energy saving and privacy, then sleep the device.

Are my photos uploaded to a server?

No. Decoding, cropping, grayscale conversion, PNG export and EPUB packaging all run locally with the Canvas API and JSZip. Nothing is transmitted or stored.

What size should a Kindle Paperwhite wallpaper be?

Paperwhite 11th gen (6.8") is 1236×1648. Paperwhite 12th gen (7") is 1264×1680. Oasis and Colorsoft 7" use 1264×1680. Scribe is 1860×2480. Pick the model above and the crop frame uses that size automatically.

PNG or EPUB — which should I download?

Download PNG for Kobo, KOReader, Boox and reMarkable (copy the file onto the device). Download EPUB for Kindle if you want the Display Cover lock-screen workaround without a separate image-to-EPUB converter.

Will the image look good on an e-ink screen?

Exact pixels prevent stretching. Optional grayscale helps on black-and-white panels. For dithering and e-paper palettes, run the result through the free E-Ink Image Converter on this site.

Kindle Screensaver Generator - Free Wallpaper Resizer for Kindle & Kobo

Step 1: Choose your device

E-reader model

Selected device dimensions: 1236 × 1648 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 30 MB.

Step 3: Adjust Your Image

Upload an image to crop it to your screen.

Browser-based

Your file is processed locally without waiting for a server conversion queue.

No upload required

Files stay in your browser, which is ideal for private drafts and personal libraries.

Free ebook tool

Merge and split ebook files without signup, credits, watermarks, or installation.

How to make a Kindle screensaver

Pick your e-reader

Choose Kindle Paperwhite, Oasis, Scribe, Kobo Clara, Libra, Boox or enter custom pixel dimensions. The crop frame locks to that screen’s aspect ratio.

Upload a photo

Drop a JPG, PNG, WebP, GIF or BMP. The file never leaves your device.

Crop and position

Drag and zoom until the picture fills the frame the way you want. Nothing is stretched.

Download PNG or EPUB

Save a pixel-perfect PNG for Kobo and KOReader, or an EPUB cover book you can send to Kindle for the Display Cover lock screen.

How to set a custom screensaver

Kindle (Display Cover)

Download the EPUB from this tool (or convert the PNG yourself).
Send the EPUB to your Kindle with Send to Kindle (email or the web uploader).
On the Kindle, open Settings → Device Options and turn on Display Cover.
Open the new “book”, then put the Kindle to sleep. The lock screen shows your image.

Kobo

Connect the Kobo by USB and tap Connect.
Open the Kobo drive, show hidden files, and go to the .kobo folder.
Create a folder named exactly screensaver and copy your PNG files into it.
Eject, then enable Show current read / full-screen covers under Energy saving and privacy.

KOReader

Copy the PNG files into a folder such as .adds/koreader/screensaver.
In KOReader open Settings → Screen → Sleep screen → Wallpaper.
Choose a single image or a random folder of images.
Point it at the folder you created, then sleep the device to preview.

E-reader screensaver sizes and resolutions

Exact lock-screen pixel sizes for Kindle, Kobo, Boox, reMarkable, Nook and PocketBook. Match these dimensions and the image fills the screen with no stretching, cropping or black bars.

Brand	Device	Resolution
Kindle	Kindle (11th Gen) 6"	1072 × 1448
	Kindle (10th Gen) 6"	600 × 800
	Kindle Paperwhite (12th Gen) 7"	1264 × 1680
	Kindle Paperwhite (11th Gen) 6.8"	1236 × 1648
	Kindle Paperwhite (10th Gen) 6"	1072 × 1448
	Kindle Paperwhite (7th Gen & earlier)	758 × 1024
	Kindle Oasis (2nd/3rd Gen) 7"	1264 × 1680
	Kindle Scribe 10.2"	1860 × 2480
	Kindle Colorsoft 7"	1264 × 1680
	Kindle Voyage	1072 × 1448
Kobo	Kobo Nia 6"	758 × 1024
	Kobo Clara BW 6"	1072 × 1448
	Kobo Clara 2E / HD 6"	1072 × 1448
	Kobo Clara Colour 6"	1072 × 1448
	Kobo Libra 2 / Colour 7"	1264 × 1680
	Kobo Sage 8"	1440 × 1920
	Kobo Forma 8"	1440 × 1920
	Kobo Elipsa 2E 10.3"	1404 × 1872
Boox	Boox Palma 6.13"	824 × 1648
	Boox Go 6"	1072 × 1448
	Boox Page / Go 7"	1264 × 1680
	Boox Note Air Series 10.3"	1404 × 1872
	Boox Tab Ultra C 10.3"	1860 × 2480
reMarkable	reMarkable 2 10.3"	1404 × 1872
reMarkable	reMarkable Paper Pro 11.8"	1620 × 2160
Nook	Nook GlowLight 4	1072 × 1448
Nook	Nook GlowLight 4e	758 × 1024
PocketBook	PocketBook Era 7"	1264 × 1680
PocketBook	PocketBook InkPad 4 / Color 3	1404 × 1872

Kindle screensaver FAQ

Most Kindles do not let you set a photo as the lock screen. The reliable workaround is Amazon’s Display Cover setting: send an EPUB whose cover is your image, open that book, then sleep the device. This generator builds that EPUB for you in the browser.

Why e-reader wallpapers need exact pixels

E-ink screens have a fixed native resolution. A photo that looks fine on a phone is almost never the same aspect ratio as a Paperwhite or Clara, so the device stretches it, letterboxes it, or crops the wrong part of the face.

This tool locks the crop to your model’s aspect ratio and exports at the real pixel size. Kindle users can download an EPUB cover book instead of hunting for a second converter. Files never leave the browser, so it stays free, private, and usable offline after the page loads.

Kindle Screensaver Generator