Will noise reduction make my photo look soft or lose detail?

There's a tradeoff — reducing noise can soften fine detail somewhat, so it's worth comparing before and after to find a level that cleans up noise without losing too much sharpness.

What is a median filter, and why use it for noise?

It replaces each pixel with the median value of its surrounding neighbors, which is effective at removing random speckle noise while better preserving edges than a simple blur would.

Does this work on both photos and scanned documents?

Yes, it works on any image with visible speckle noise, whether from a camera sensor or a scanner.

Does Image Noise Reducer upload my files to a server?

No. Image Noise Reducer runs entirely in your browser using on-device processing, your files never leave your device.

Image Noise Reducer

Reduce speckle/grain noise in a photo with a median filter.

Runs in your browser

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About this tool

Photos taken in low light or with a phone or older camera often show visible speckle or grain, especially in shadow areas, which can look unintentional rather than a deliberate stylistic choice. This tool reduces speckle and grain noise in a photo using a median filter, cleaning up noisy images without needing dedicated photo editing software.

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