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images · analyse
Image Histogram
Counts every pixel into 256 bins — luminance (0.2126 R + 0.7152 G + 0.0722 B, rounded) plus the red, green and blue channels — and exports the exact counts as CSV. The bars below are the luminance histogram; the counts always sum to width × height.
A little guidance. A better result.
How to use Image Histogram
256-bin luminance + RGB counts exported as CSV; counts sum to the pixel total.
Prepare your input
Open the image to analyse.
Use the workspace
Inspect luminance and RGB distributions.
Check your result
Export the CSV and check channel counts against the pixel total.
Know the limits
A histogram summarizes channel frequency, not where objects are located in the image.
Where does my input go?
This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.
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