Noise is the price of shooting in low light: crank the ISO and photos fill with random speckle — ugly rainbow-colored dots (chroma noise) and rough gray grain (luminance noise). Denoising removes it, and the trick is doing so without smearing away real detail. This tool treats the two noise types separately, the way professional editors do.
Remove color noise eliminates the rainbow speckle — it can be pushed hard with almost no downside, since color noise carries no real detail. Smooth grain softens luminance noise, and Protect detail builds an edge mask so faces, text and textures stay crisp while flat areas (skies, walls, shadows) get cleaned. Free, no signup, processed entirely on your device.
How to add the denoise effect to a photo
Tips for the best denoise look
- Start with color noise at 60–80 — removing the rainbow speckle alone makes most night shots look dramatically better.
- Keep Protect detail above 50 for photos with faces or text; lower it only for smooth subjects like skies.
- A light pass of the Film Grain effect afterward can make a heavily denoised photo look natural again — uniform grain beats blotchy noise.
Denoise effect — FAQ
What causes noise in photos?
At high ISO the camera amplifies a weak light signal, and random sensor variation gets amplified with it. It shows up as luminance grain (brightness speckle) and chroma noise (colored dots) — most visible in shadows and night shots.
Why treat color noise separately from grain?
Color noise is pure garbage — no real image information lives in random rainbow dots, so it can be removed aggressively. Luminance grain is entangled with actual texture, so smoothing it needs more care. Separating the two gets a cleaner result with less detail loss.
Will denoising make my photo blurry?
That is what the Protect detail slider prevents: it detects edges and textures and preserves them while flat areas get smoothed. At sensible settings the photo looks cleaner, not softer.