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The original camera file gives the best result; re-saved copies bake the noise into blocks.
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AI Tool
AI Image Denoiser
Clear the speckle out of high-ISO, night and scanned photos without wiping the detail underneath.
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Noise, grain and the trade-off between them
Digital noise is the colored speckle a sensor produces when it amplifies a weak signal — high ISO, night shots, deep shadows. Film grain is different: it is part of how the picture was made, and scans carry it as texture rather than error. The noise source setting tells the model which one it is looking at.
Every denoiser trades noise against texture, because at the pixel level fine detail and fine noise look alike. Detail retention is that dial: raise it and some speckle stays, lower it and skin, fabric and foliage start looking like plastic.
Three steps to a clean file
Say where the noise came from
High ISO, night or scanned film. Each has a different noise pattern to remove.
Balance strength and detail
Push strength until the speckle goes, then raise detail retention until texture returns.
Clean without wiping the picture flat
Source-aware passes
Sensor noise, night shots and film scans are treated as the different problems they are.
Detail retention
A direct control over how much fine texture survives the pass instead of a single fixed setting.
Grain option
Leave a trace of grain so the result still reads as a photograph rather than a render.
Color speckle removal
Chroma blotches in shadows are removed separately from luminance noise.
Where noise is worst
When noise is the thing ruining the shot
Indoor and night photos
Anything shot above ISO 3200 tends to look better after a pass than after any exposure fix.
Scans of old photos
Clean the scan before colorizing or restoring, so the next pass is not amplifying speckle.
Photos going to print
Noise that hides on a phone screen becomes visible texture on paper.
Frequently Asked Questions
What is the difference between noise and grain?
Noise is sensor error, mostly random colored speckle. Grain is the texture of film, part of the image itself. Set the source to scanned film and turn on the grain option when you want the character kept.
Why does skin look waxy after denoising?
Detail retention is too low for the strength you used. Raise retention to high, or lower the strength — the pass cannot tell fine skin texture from fine noise without that hint.
Does it enlarge the photo too?
No, it only cleans. Run the upscaler afterwards if you also need a larger file, or use the enhancer to do both in one pass.
Which strength should I start with?
Around 50 percent for high-ISO photos, lower for anything already fairly clean. Judge it at 100 percent zoom, not on the thumbnail.
Can it fix JPG compression blocks?
Partly. Blocking is not noise, so it is smoothed rather than removed. Start from the least-compressed copy you still have.
Clean up your noisy photo
Upload the shot, set the strength and keep the detail underneath.