Free tool · runs in your browser
Webtoon slicer: 800 × 1280 slices in one click
Drop in a long webtoon strip (or several images in order). The slicer scales it to 800 px wide, cuts it into slices no taller than 1,280 px, tries to cut in the empty gutters between panels so no bubble is split, keeps each JPG under 2 MB and downloads them as a numbered ZIP. Your images never leave your device.
Drop your webtoon images here
One long strip, or several images in order (sorted by file name). Nothing is uploaded.
How to use it
- 1
Add your images
Drop one long strip, or several images that should be stacked top to bottom. They're ordered by file name, so 01, 02, 03 works.
- 2
Check the settings
800 px and 1,280 px match WEBTOON CANVAS. Keep 'cut in the gutters' on so slices end in the space between panels.
- 3
Slice and download
Press Slice it, check the previews, then download them one by one or as a ZIP of numbered files ready to upload in order.
Want the background? Read the webtoon size guide.
Webtoon sizes at a glance
- Episode width
- 800 px
- Max image height
- 1,280 px
- Max file size
- 2 MB per image, 20 MB per episode
- Square thumbnail
- 1,080 × 1,080 px, under 500 KB
- Vertical thumbnail
- 1,080 × 1,920 px, under 700 KB
- Draw at
- 1,600 px wide (2×), export at 800
WEBTOON CANVAS limits as of November 2026.
Questions
What size should webtoon slices be?
800 px wide and up to 1,280 px tall, under 2 MB each, for WEBTOON CANVAS. Other platforms accept the same size.
Are my images uploaded anywhere?
No. Slicing happens entirely in your browser. Nothing is sent to a server.
Why are some slices shorter than 1,280 px?
With 'cut in the gutters' on, the slicer ends a slice in the nearest empty space between panels, so a speech bubble or face is never split across two images.
Can I use it for Tapas, Instagram or my own site?
Yes. Choose a different width if your platform needs one, and set the maximum height you want.
Does it work on a phone?
Yes, though very long strips use a lot of memory. On a phone, slice one chapter section at a time.
Make the webtoon itself
Panelo turns an idea into a lettered, full-colour vertical episode with the same characters in every panel.