Image Histogram Analyzer
Inspect RGB and brightness distributions with statistics and CSV or JSON export.
Drop your image here
Drag and drop, or choose a file below
JPG · PNG · WEBP
Up to 250 MB · One image at a time
Each image: up to 16 megapixels and 8192 px per side
Counts decoded sRGB channels from 0 to 255. Fully transparent pixels are excluded; every other pixel has equal weight, including partially transparent pixels. These are channel statistics, not a quality score.
Result
Choose an image or try the sample to see your preview here.
100% local processing
How to use
- 01
Choose an image or try the local sample.
- 02
Analyze the image, then select RGB or an individual channel.
- 03
Inspect the chart and download CSV or JSON.
Details and tips
How it works
The tool counts 256 bins for red, green, blue and estimated luma from decoded sRGB pixels. It excludes fully transparent pixels and gives all other pixels equal weight. Mean, lower median, minimum and maximum are reported.
Made for everyday images
Compare tonal distributions, inspect clipping and export data for image-processing analysis.
Frequently asked questions
Are images uploaded?
No. Processing and export happen on your device. Images are not saved to an account.
What are the limits?
Input supports JPG, PNG and WebP, up to 250 MB, 8192 px per side and 16 million pixels. Expanded output must also fit the pixel limits. Animated input is processed as a still frame.