Question 1

Is my image uploaded to a server?

Accepted Answer

No. The image is loaded via URL.createObjectURL, read pixel-by-pixel from a local <canvas>, and discarded when the page reloads. Network tab will show no image traffic.

Question 2

How does the tool decide which colors to return?

Accepted Answer

It builds an 8-step-bucketed RGB histogram, sorts buckets by pixel count, then greedily picks the most common colors while rejecting any candidate whose CIEDE2000 distance to an already-selected color is ≤ 15. That keeps the result visually distinct.

Question 3

What image formats are supported?

Accepted Answer

Any format the browser can decode through an <img> element, typically PNG, JPEG, WebP, GIF, and BMP. The current extractor reads RGB channels from canvas pixels and does not use alpha when ranking colors, so transparent areas can influence the result.

Question 4

Why is the first color not always my brand color?

Accepted Answer

Colors are ordered by area coverage, so the largest region wins. A brand mark that covers 5% of a photograph will usually rank below the dominant background.

Image Palette Extractor

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Extracting Dominant Color Palettes from Images in the Browser

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