Image noise refers to random variations in pixel brightness or colour, similar to the static seen on analogue television sets. It is often used in design as a texture or grain effect.

What is the density slider?

Density controls the proportion of pixels that are filled with a random colour. At 100% every pixel is filled (fully opaque noise). At lower values some pixels remain transparent, creating a sparse noise pattern.

What is the maximum image size I can generate?

There is no hard limit, but very large images (e.g. above 4000×4000 px) may slow your browser because every pixel is written individually using JavaScript.

Image Noise Generator

Generate random noise images of any size. Choose grayscale or colour noise. Download as PNG.

Width (px)

Height (px)

Noise type:GrayscaleColor

Density: 100%

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FAQ

What is image noise?: Image noise refers to random variations in pixel brightness or colour, similar to the static seen on analogue television sets. It is often used in design as a texture or grain effect.
What is the density slider?: Density controls the proportion of pixels that are filled with a random colour. At 100% every pixel is filled (fully opaque noise). At lower values some pixels remain transparent, creating a sparse noise pattern.
What is the maximum image size I can generate?: There is no hard limit, but very large images (e.g. above 4000×4000 px) may slow your browser because every pixel is written individually using JavaScript.

The Image Noise Generator creates images filled with random pixel noise using the HTML Canvas API. Specify the desired width and height, choose between grayscale noise (random grey values) or colour noise (random R, G, B channels), and optionally adjust the density to control how many pixels are filled versus left transparent. Download the result as a PNG file. Useful for textures, backgrounds, and design experiments.