Image Editing
Noise Remover
Denoise grainy photos with bilateral, median, and non-local means filters.
Your files stay on your device - processed locally via WebAssembly, never uploaded
Drop noisy photo(s) to clean up
Best for high-ISO, low-light, scanned photos · multiple = batch ZIP
Embed this tool on your website
Copy this code to add the Noise Remover to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/noise-remover" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Noise Remover by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/noise-remover">OptiPix Noise Remover</a></p>
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About Noise Remover
Last updated: May 2026
OptiPix Noise Remover cleans up grainy photos using classical denoising filters that run entirely in your browser. The auto-detect estimates noise level by analyzing flat regions, and suggests the best preset (Light, Medium, Strong, or Auto). Three filter methods are available: bilateral filter for fast edge-preserving smoothing, median filter for salt-and-pepper noise (good for old scans), and non-local means for highest-quality denoising on photographs. Selective denoising sliders let you separately control luminance noise (grainy texture) and color noise (random colored speckles in shadows) by working in Lab color space. After denoising, an optional sharpening pass restores edge crispness. Before/after comparison slider, batch mode, and HEIC input are supported. Best for low-light phone photos, high-ISO photography, scanned negatives, and security camera footage. Everything is local - your photos never leave your device, and the heavy non-local means filter runs in a Web Worker so the UI stays responsive.
How It Works
Bilateral filter computes a Gaussian-weighted average within a kernel, weighted by color similarity to preserve edges. Median filter replaces each pixel with the median of its neighborhood - great for salt-and-pepper noise. Non-local means compares image patches across a search window for the highest quality. Heavy filters run in a Web Worker.
Use Cases
- •Clean up a low-light iPhone photo
- •Remove grain from a high-ISO concert shot
- •Denoise a scanned old family photo
- •Fix JPEG compression artifacts in a re-saved image
- •Smooth a noisy security camera frame
You Might Also Like
If you find Noise Remover useful, check out these related tools: Audio Noise Remover, Photo Filters, and Image Crop. All tools run entirely in your browser with no uploads or signups required.
Explore more: Browse all tools · Step-by-step guides · Tips & tutorials · Compare tools
Frequently Asked Questions
Which filter should I use?
Does it auto-detect noise level?
Can I see what noise was removed?
Can I zoom in to inspect detail?
Are my photos uploaded?
Will denoising make the photo blurry?
What's color noise vs luminance noise?
Does it work on JPEG artifacts?
Can I batch denoise multiple photos?
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