How to Remove Grain and Noise from a Photo

Photos taken in dim light often look speckled and grainy. To clean them up, open the Image Denoiser, add the photo, set the Smoothing Radius (how strongly noise is smoothed) and the Edge Protection Strength (how much detail is kept sharp), click Denoise Image, and download the refined result. It runs in your browser, so the photo isn't uploaded.

Remove noise step by step

1. Open the Image Denoiser and add the noisy photo.
2. Set the Smoothing Radius: a small radius removes fine grain; a larger one smooths heavier noise but softens more.
3. Set the Edge Protection Strength: higher values keep edges — eyes, hair, text, outlines — crisp while flat areas are smoothed.
4. Click Denoise Image and compare the result with the original.
5. Download the refined photo.

What causes noise?

Camera sensors produce random speckles, especially when there isn't much light. Phones and cameras raise their sensitivity (ISO) in dim conditions to make the picture bright enough, and that amplifies the speckles too. You see it as:

• Grain: fine, gritty texture in darker areas.
• Colour noise: red, green and blue blotches in shadows.
• Smudged detail, when the phone's own noise reduction kicked in too hard.

Noise is worst in night photos, indoor shots, concerts, and photos brightened a lot after taking them.

Finding the right balance

Every denoiser trades noise for detail. Too little and the grain remains; too much and skin looks plastic and textures turn to mush.

• Look at a face or a textured surface (fabric, brick, foliage) while adjusting — that's where over-smoothing shows first.
• Keep some grain. A little texture looks natural; perfectly smooth skin doesn't.
• Raise edge protection if outlines get soft.

Recommended order of edits

1. Brighten if needed with Brightness & Contrast — this reveals the noise you need to remove.
2. Denoise with the Image Denoiser.
3. Sharpen lightly last with Sharpen Image, so you don't sharpen the grain.

When AI does better

For very noisy, very dark photos — a night street scene, a dim restaurant — AI can rebuild detail that classic noise reduction can only smooth away. The AI Photo Enhancer reduces noise while correcting light and colour in one step (2 photos a day free; the photo is processed by an AI service).

Avoid noise when you take the photo

• Use more light: move closer to a window or turn on lights.
• Use night mode on your phone, and hold still for the whole exposure.
• Steady the phone against a wall or table, which lets it use a lower ISO.
• Don't zoom digitally in the dark — it magnifies noise.
• Expose correctly rather than brightening later; brightening a dark photo afterwards always adds noise.

Check at full size

Noise and over-smoothing are both easy to miss on a small preview. Zoom the result to 100% and look at shadows, skin and fine textures before downloading — and compare with the original side by side so you can see whether you've kept enough detail.

Scans and old photos

Scans of old prints can show film grain, dust and paper texture. Light denoising helps, but for scratches, stains and fading, Old Photo Restoration repairs the damage as well.

Frequently asked questions

Is my photo uploaded?

No. Noise reduction runs in your browser.

Will it make my photo blurry?

Too strong a setting can. Keep edge protection high and the smoothing radius modest, and compare carefully.

Does it work on screenshots?

Screenshots don't have camera noise. For compression blocks in screenshots or forwarded photos, the AI enhancer's artefact removal works better.