Posterize Image Tool
Create a graphic posterized look by reducing each RGB channel to 2–16 levels, with optional ordered dithering for smoother transitions.
Upload an image to reduce its color palette into broad tonal bands.
2 to 16 color levels
Control how aggressively each red, green, and blue channel is quantized.
Optional dithering
Use an ordered 4 x 4 pattern to break up visible band boundaries.
Stable local output
The same image and settings produce the same full-resolution result.
仕組み
- 1
画像をアップロードする
Choose a photo, scan, logo, or graphic from your device.
- 2
Tune the effect
Adjust the main control and optional inversion or dithering.
- 3
PNGをダウンロード
Save the processed result at the source pixel dimensions.
Posterization and dithering
Lower level counts create bolder graphic bands, while higher counts retain more photographic detail. Ordered dithering adds texture that can make gradients appear smoother, but it is less suitable for clean logos and flat illustrations.
よくある質問
What does levels per channel mean?
It controls how many possible values each RGB color channel can use.
Does dithering add random noise?
No. This tool uses a repeatable ordered pattern.
私の画像はアップロードされていますか?
いいえ、画像はブラウザーに残ります。
Posterize Image Tool last reviewed: Aug 2, 2026.