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Image Cartoonizer

Posterise, smooth and outline a photo to give it a bold cartoon look with strength controls.

Turn a photo into a cartoon

Download PNG
Output size: —
Status: Load an image to begin
Posterising, smoothing and edge detection all run on a local canvas; your photo never leaves the device.

How to use the Image Cartoonizer

  1. Choose a photo from your device.
  2. Set the number of colour levels, the smoothing passes and the outline strength.
  3. Press Cartoonize, adjust the sliders and download the PNG.

Features

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Frequently Asked Questions

Common questions about the free online image cartoonizer.

Choose the photo, tune the colour levels, smoothing and outline controls, then press Cartoonize and download the PNG.
It snaps every colour channel to a small set of steps, which flattens the gradients into the bold patches a cartoon drawing has.
Posterising alone leaves speckled noise. Smoothing first merges those pixels into larger patches so the posterised result looks clean.
A Sobel edge detector measures the brightness gradient, and pixels above the edge threshold are darkened in proportion to the outline strength.
Lower the colour levels to three or four, raise the smoothing a little, and push the outline strength towards one hundred.
Yes. The canvas matches the original image size, so the exported PNG has the same pixel dimensions as the photo.
No. The image is opened with the File API and processed on a canvas inside your browser.
Any image your browser can display, which normally means JPEG, PNG, WebP, GIF and BMP.
Yes, it is free with no account, no sign-up, no watermark and no limit on the number of photos you process.

Last updated: October 10, 2026