Count Unique Colors in Image

Estimate or precisely calculate the total number of unique color values present across an image canvas.

How It Works & Processing Standards

Estimate or precisely calculate the total number of unique color values present across an image canvas.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Desktop max file size: 40MB
  • Mobile max file size: 20MB

Count Unique Colors in Image is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Count Unique Colors in Image

  1. 1
    Upload ImageChoose the image to analyze.
  2. 2
    View CountSee total unique color count and sampling methodology notes.

Common Use Cases

  • Checking if an illustration can be reduced to an 8-bit indexed palette without banding
  • Auditing graphic complexity for screen printing separations
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