Little Toolkit

RGB Image Histogram

See the pixel distribution for each image color channel.

Enable JavaScript for interactive processing. You can read the instructions, limits, and FAQs below without it. Files are processed only in your browser.

RGB Image Histogram User Guide

Count RGB pixel frequencies locally, view each channel histogram, and copy the table.

How to use

  1. Select one static, opaque PNG.
  2. View the 0–255 distribution for the three color channels.
  3. Copy the complete numeric table if needed.

Formats and limits

  • Up to 5 MiB and 2 million pixels; rejects 16-bit PNGs, APNGs, corrupt files, and decoded transparent pixels.
  • Counts 8-bit values after browser conversion to sRGB, not necessarily the original color space or sample values.
  • The histogram is for viewing only, not exposure analysis or color correction; processing stays in the browser.

Output

Copy a plain-text table with all 0–255 frequencies.

Frequently asked questions

Can this assess exposure or color accuracy?

No. Results describe decoded browser pixel frequencies and cannot determine exposure or color accuracy.

The file name and content are only processed in your browser and are not transmitted to the server. The original file will not be overwritten. Please export the required results before leaving the tool.