View an image histogram
Inspect the RGB and luminance histograms of any image to understand its exposure and color balance. All processing happens in your browser.
Privacy-first: every image is processed locally in your browser. Nothing is uploaded, stored or transmitted to any server.
Exposure, read from the data
A histogram shows how a photo’s pixels distribute from shadows to highlights — the objective counterpart to “looks a bit dark”. A pile-up against the left edge means crushed shadows; against the right, blown highlights that no edit can recover. Photographers read histograms because screens lie and data doesn’t.
RGB and luminance, per channel
The tool renders both a combined luminance histogram and separate red, green and blue channels — the RGB view exposes color casts a luminance curve hides (a red channel piled right of the others means a warm cast). Check edits before publishing or diagnose a batch, locally in your browser.
Frequently asked questions
- Is my image uploaded for analysis?
- No. Color extraction, histograms and contrast checks all run locally in your browser.
- What color information can I get?
- Dominant colors, a copyable palette with hex codes and share percentages, and full RGB and luminance histograms.
- What is the contrast checker for?
- It measures the WCAG 2.1 contrast ratio between two colors and shows whether they pass AA, AA Large and AAA for accessible text.
- Can I copy the color codes?
- Yes. Click any swatch to copy its hex code, or copy the entire palette at once.