Image Entropy Calculator
Measure pixel-value uncertainty from 0 to 8 bits per channel and inspect the luminance distribution.
Upload an image to measure luminance and channel entropy.
Numeric metrics
Turn pixel distributions into values that can be compared consistently.
Visual context
Use the preview or chart to understand what contributes to the result.
Private analysis
All calculations stay in the browser and no image upload is required.
Bagaimana ia berfungsi
- 1
Muat naik imej
Choose the rendered image you want to inspect.
- 2
Review the metrics
Read the calculated values and visual analysis.
- 3
Export the findings
Download the available map, CSV, or text report.
What image entropy measures
Shannon entropy rises when pixel values are distributed across more levels with less predictability. Flat graphics tend to score lower, while detailed photos, texture, and noise often score higher. Entropy describes distribution complexity, not visual quality by itself.
Soalan lazim
What is the maximum entropy for an 8-bit channel?
The theoretical maximum is 8 bits when all 256 values occur with equal probability.
Does high entropy mean a better image?
No. Detail can increase entropy, but unwanted noise can increase it too.
Adakah imej saya dimuat naik?
Tidak. Imej anda kekal dalam penyemak imbas anda.
Image Entropy Calculator last reviewed: Sep 12, 2026.