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Image Histogram Viewer

View RGB and luminance histograms for any image in your browser. Inspect exposure, color balance, and tonal range. Fully private.

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Accepted: image/*

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Image Histogram Viewer

Visualize the per-channel tonal distribution of any image. Histograms reveal exposure issues (heavy left-bias = underexposed, right-bias = overexposed), color casts (uneven RGB peaks), and dynamic range usage at a glance.

What it shows

Red, Green, Blue channels — peak distribution per color
Luminance — perceptual brightness using 0.299R + 0.587G + 0.114B

Use cases

Verify exposure before editing
Diagnose color casts
Check tonal range for HDR-style edits
Pre-print color balance
Photography studies

All processed locally — no upload needed.