Image Posterize Tool
Reduce the number of color levels in an image to create a bold poster-style effect.
Posterize an Image Online
Posterization reduces each RGB channel to a limited number of discrete levels, creating visible color bands and a bold graphic style.
Example
Reducing a portrait to 4 color levels creates stronger bands between shadows, midtones and highlights than a 12-level setting.
Factors That Affect the Result
Lower level counts create a more dramatic effect, while higher counts preserve more tonal detail. Images with smooth gradients show posterization especially clearly.
Frequently Asked Questions
Does posterization resize the image?
No. Pixel dimensions remain unchanged.
Does it automatically reduce file size?
No. File size still depends on output format and compression.
Is processing local?
Yes. The effect runs in your browser.
Related Tools
Using Posterization
Posterization reduces the number of color or tonal levels in an image, producing a flatter graphic look. Lower level counts create stronger banding and a more stylized result. For smoother photographs, keep more levels; for artwork or retro effects, fewer levels may be appropriate.
Using Posterization
Posterization reduces the number of visible color or tone levels, creating flatter transitions and a graphic look. Lower level counts produce a stronger effect, while higher counts retain more natural detail. It works especially well for illustrations, stylized portraits, and artwork where simplified color bands are part of the intended design.
Technical Method and Practical Limits
Posterization reduces the number of tonal or color levels, producing visible bands and a stylized appearance. The effect is destructive to subtle gradients in the exported image, so retain the original when later color correction may be needed.