Question 1

How does image denoising work?

Accepted Answer

The tool uses a bilateral filter algorithm that smooths noise while preserving edges. It compares neighboring pixels and averages similar ones, removing grain while keeping important details.

Question 2

What types of noise can it remove?

Accepted Answer

It works best on Gaussian noise (grain from low-light photos), JPEG artifacts, and general sensor noise from phone or digital cameras.

Question 3

Is my image uploaded to a server?

Accepted Answer

No. All processing happens entirely in your browser using Canvas and JavaScript. Your images never leave your device.

Question 4

What is the recommended denoise strength?

Accepted Answer

Start with a strength of 3-5 for mild noise. Use 7-10 for heavy grain. Very high values may blur fine details.