Grain Filter
Grain Filter — instantly, in your browser, with nothing uploaded.
Drag & drop your image here, or click to choose. Everything runs in your browser — nothing is uploaded.
A little grain makes a flat digital photo look like film, and it also hides the banding that appears in smooth gradients and dark skies. The noise here is deterministic, so the same setting always gives the same result rather than shimmering as you adjust it.
Frequently Asked Questions
How do I use the grain filter tool?
Drop your image onto the box above, adjust the controls, and the preview updates as you drag. When it looks right, choose PNG, JPG or WEBP and press Download. Nothing is uploaded at any point.
Are my files uploaded to a server?
No. The file is decoded and re-encoded directly in your browser using JavaScript and WebAssembly, and never leaves your device. That is what makes it safe for private photos, client work and anything confidential, and it is why the tool keeps working with your network disconnected once the page has loaded.
Why would I add noise to a photo on purpose?
Two reasons: it gives digital images the texture people associate with film, and it breaks up visible banding in gradients — a light grain is a standard fix for blotchy skies and dark backgrounds that have been compressed too hard.
Is there a limit or a watermark?
No limits, no watermark, no signup and no cost. Because the work happens on your own device there is no server bill to cover, so there is nothing to meter — the only real constraint is your device’s memory on very large files.
Does this work on Windows, Mac, iPhone and Android?
Yes. It runs in any modern browser on Windows, Mac, Linux, iPhone and Android with nothing to install and no account needed. Chrome, Edge, Firefox and Safari are all supported.