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ToolSuite
Image Tools

Image Histogram Viewer

See the tonal distribution of an image and whether shadows or highlights are clipped.

or drag it here

image/* · up to 40 MB

Processed in your browser

Fill in the form and press “Build histogram” to see the result here.

How to use it

  1. 1Select your image, or drag and drop it onto the upload area.
  2. 2Adjust the options if you need something other than the defaults.
  3. 3Press the button. The image is processed on your device - nothing is uploaded.
  4. 4Download the result, or drop in another file to do it again.

About the Image Histogram Viewer

The histogram counts how many pixels fall at each brightness level. A photograph with a good tonal range fills most of the width; one bunched at either end is under or over exposed.

Spikes at exactly 0 or 255 mean pixels have been clipped to pure black or pure white. That detail is gone and cannot be recovered by editing - only by re-shooting.

Questions people ask

Is your image uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your image never leaves your device. You can confirm it by opening your browser's network panel while the tool runs, or by disconnecting from the internet after the page has loaded.

Is it free, and do I need an account?

Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.