Local speckle reduction
Clean Up a Picture
Reduce isolated speckles and pixel noise with one to three median-filter passes.
Pixel processing runs locally and leaves the original file unchanged.
How to use the picture cleanup tool
- STEP 1Choose an image.
- STEP 2Select light, medium, or strong filtering.
- STEP 3Inspect fine texture and download the PNG.
About this tool
Use a transparent neighborhood median filter to reduce isolated noisy pixels without claiming semantic object removal.
One pass is the safest starting point for ordinary photos.
Median filtering is especially suited to salt-and-pepper noise rather than broad blur or compression artifacts.
Frequently asked questions
What does the cleanup filter remove?
A 3×3 median filter is effective on isolated bright, dark, or colored pixels and some salt-and-pepper noise.
Can it remove large objects?
No. It processes local pixel neighborhoods and does not understand or reconstruct scene content.
Why can strong cleanup soften detail?
Repeated median passes replace more local pixel variation, including some legitimate fine texture.