Image Histogram - RGB & Luminosity Analyzer

Analyze the color distribution of any image with detailed RGB channel histograms. View min, max, mean, and median statistics. 100% client-side.

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Drop an image here or click to browse

RGB and luminosity histogram analysis. 100% private.

About Image Histogram

Welcome to TooliFyra's Image Histogram Tool — a free online analyzer that visualizes the color distribution of any image. See the red, green, and blue channel histograms along with optional luminosity data.

Key Features

RGB HistogramsRed, green, and blue channel bars.
Luminosity OptionView luminance distribution.
Channel StatisticsMin, max, mean, and median per channel.
Download as ImageSave histogram visualization as PNG.
100% PrivateAll processing is client-side.

How to Use

  1. Drop an image or click to browse.
  2. View RGB histograms automatically generated.
  3. Toggle "Show Luminosity Histogram" if desired.
  4. Check channel statistics below.
  5. Download the histogram visualization as PNG.

How to Read a Histogram

The horizontal axis represents pixel values from 0 (black) to 255 (white). The vertical axis shows how many pixels have that value. A well-exposed image typically has a histogram that spans most of the range without clipping at either end.

Frequently Asked Questions

A histogram shows the distribution of pixel intensity values for each color channel, helping to analyze exposure and contrast.

Luminosity is a weighted sum of RGB channels that represents perceived brightness: 0.299R + 0.587G + 0.114B.

Yes, completely free with no usage limits.