Analyze color distribution with RGB, luminance, and individual channel histograms. Features exposure analysis, statistics, and comparison tools.
View the tonal distribution of any image as a histogram chart. See how pixel values are distributed across shadows, midtones, and highlights for each color channel (red, green, blue) and for overall luminance. A handy diagnostic tool for photographers and anyone evaluating exposure.
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Convert images to Base64 encoded strings for embedding in CSS, HTML, or JavaScript. Multiple output formats available.
Compare two images pixel-by-pixel. Multiple comparison modes: side-by-side, overlay, difference highlighting, onion skin, and slider. Perfect for visual regression testing.
Crop and trim images with precision visual selection. Features aspect ratio presets (1:1, 16:9, 4:3), free-form cropping, grid overlays, and pixel-perfect adjustments for professional results.
A photo looks flat and you need to confirm whether it is under-exposed before correcting it.
Input
photo.jpg · RGB + luminance histogram
Result
Tones bunched in the left third, right side empty → under-exposed, headroom to brighten
A histogram plots how many pixels fall at each brightness level; data crammed at the dark end with an empty highlight region objectively confirms under-exposure. It turns "looks dark" into a measurable correction.
View the tonal distribution of any image as a histogram chart. See how pixel values are distributed across shadows, midtones, and highlights for each color channel (red, green, blue) and for overall luminance. A handy diagnostic tool for photographers and anyone evaluating exposure.
Quickly assess whether a photo is underexposed, overexposed, or well-balanced.
Compare RGB channels to identify color casts or imbalances.
Check that tonal range uses the full spectrum before sending images to print.
It depends on the image. Generally, a well-exposed photo has a smooth spread of values without hard spikes at either edge. But a high-key portrait or low-key artistic shot will naturally skew one way.
The histogram is read-only, it is a diagnostic tool. Use the Image Filters or Color Grader tools to make adjustments based on what the histogram reveals.
Images are decoded, edited, and exported entirely inside this browser tab. No originals, exports, or metadata are uploaded.