Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

Do I need to install any software to use NanoTools?

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

What file formats are supported?

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

NanoTools

Back to Tools

Image Histogram Analyzer - View Color Distribution

View image histogram online for free. Analyze color distribution in photos. RGB channel visualization.

Drop an image here or click to browse

image/* • Max 50MB

What This Tool Does

Generates RGB color channel histograms
Shows luminosity and brightness distribution
Displays individual red, green, and blue channel graphs
Reveals exposure and contrast information
Identifies clipping in highlights and shadows
Provides statistical analysis of pixel values

How to Use

1
Upload image
Select the photo you want to analyze
2
View histogram
See automatic RGB, luminosity, and individual channel histograms
3
Analyze distribution
Review exposure balance, clipping, and color distribution
4
Export data
Save histogram visualizations or statistical data

How it works

Upload image

Select the photo you want to analyze

View histogram

See automatic RGB, luminosity, and individual channel histograms

Analyze distribution

Review exposure balance, clipping, and color distribution

Export data

Save histogram visualizations or statistical data

Use Cases

Evaluating photo exposure before and after editing
Identifying overexposed highlights or underexposed shadows
Checking color balance and white balance accuracy
Analyzing color grading and tonal distribution
Quality checking images for print or publication
Teaching photography exposure and histogram reading

Frequently Asked Questions

What does a histogram show?

A histogram displays the distribution of pixel brightness values across an image, showing how many pixels exist at each brightness level.

What does clipping mean?

Clipping occurs when pixel values are pushed to pure white (255) or pure black (0), resulting in lost detail in highlights or shadows.

How do I read RGB histograms?

Each color channel shows its distribution. Overlap indicates neutral colors, while separated channels show color casts.

What is a good histogram shape?

There is no universally "good" shape. It depends on the scene. Balanced scenes show bell curves, while high-contrast scenes show split distributions.

Can histograms help with editing?

Yes, histograms guide exposure, contrast, and color adjustments by showing where pixel values are concentrated.