MARZImage Quality Analyzer
Detect blur and estimate sharpness in an image.
Loading tool…
About this tool
Upload an image to estimate how sharp or blurry it is, using a statistical edge-variance technique (Laplacian variance) computed directly on the image's pixels.
How to use
- Drop or select an image.
- View the computed sharpness score and a blur/sharp verdict.
- Use it to quickly filter out blurry photos before publishing.
FAQ
How does blur detection work here?
It applies a Laplacian (edge-detection) filter to the image and measures the variance of the result — sharp images have high-variance edges, blurry images have low variance.
Is this a machine learning model?
No, it's a well-established statistical image-processing technique, computed with plain canvas pixel math.