Read the tonal distribution
- Load the final or near-final image.
- Inspect the luminance shape before interpreting individual RGB channels.
- Use clipping percentages as evidence, then confirm visually whether the extremes are intentional.
Image Histogram and Exposure Analyzer
Inspect RGB and luminance distributions, mean brightness, and near-black/near-white clipping from a local photo sample.
Histograms reveal tonal distribution that can be hard to judge from a display alone. The tool shows channel and luminance shape alongside clipping estimates without assigning a simplistic 'good exposure' score.
How OpenFileTools processes it
Local processing, explicit choices.
OpenFileTools draws the image into a bounded analysis canvas, samples RGBA pixels, builds 256-bin RGB/luminance distributions, and reports local clipping percentages.
Questions, answered.
Does a spike at the right mean the image is bad?
No. Bright backgrounds and high-key scenes can produce intentional right-side peaks. Look at clipping and the image together.
Is the photo uploaded?
No. Pixel analysis stays in the browser.