PNG noise maker.

Color noise sets a touched pixel to a random RGB value, the look of a television between channels. Gray uses one random value for all three channels, which reads as film grain. Similar nudges a pixel's own color by up to 30 per channel, the subtlest. Custom draws from a list of colors you type.

Film grain is monochrome and clumps a little, so Gray at 15 to 25 percent gets closest; Similar at the same amount keeps more of the image. Turn on Grayscale first for a black-and-white stock.

Type color names (red, lime, cyan…) or hex codes, separated by commas, in the field that appears for Custom noise. Each touched pixel takes one of them at random, so a brand palette or a Game Boy palette gives themed texture.

Any image the browser can decode: PNG, JPG, WebP, GIF, AVIF, BMP, ICO and SVG, up to 100 MB. The tool is named for PNG because that is where people arrive from, but the input doesn't have to be one.

Amount is the share of pixels that get a noise value: at 10 percent one pixel in ten changes, at 100 every pixel does. Grain starts at 10 to 25, static at 80 and up.

The pattern comes from a seeded generator, so the same image and settings always give the same result. New pattern draws a fresh seed; the download is exactly what the preview shows.

By default fully transparent pixels are skipped, which keeps a cut-out's background clean. Turn on Transparent areas to paint noise there too; those pixels become opaque. Translucent gives every noise pixel a random alpha inside the range you set, for overlays.

No. The file is read in your browser and every step runs there, on your device. The page makes no request with your image, so you can load it, go offline and keep working.

No. The PNG noise maker is free and opens without a sign-in, an account or an install.

Nothing. The PNG noise maker holds your input in the page's memory, so closing or reloading the tab clears it, and it saves nothing in this browser.

Up to 100 MB per file, the limit the tool states under its drop area. A larger file is refused with a plain message instead of being decoded.

No, it takes one file at a time. If you drop or choose several, only the first is used; run the tool again for the next one.

The edit is written as a PNG because PNG stores every pixel exactly, with a full alpha channel, so the result can be edited again without a second round of loss.

No. The browser decodes the image and the tool writes a new file from its pixels, so camera EXIF, GPS position and text chunks in the original are not copied into the result. Keep the original file if you need them.

No. The result has the same width and height in pixels as the source.

Closest to the PNG noise maker: Film grain generator, Image static effect, Texture overlay generator, PNG color tone changer. Each opens on its own page, free and in the browser.

The PNG noise maker is one of 47 in its group. The group's page, /tools/png, lists them all.

The tool is free. Its interface is built from shadcn.io's own components (Button, Input, Slider and the rest of the registry under /ui), which come in React, Vue, Svelte and Solid. Pro adds the blocks and templates for the product around it.