FOCUSED PNG TOOL · FREE ONLINE IMAGE TOOLS

PNG Noise Generator

Generate repeatable grayscale or color noise PNGs with custom dimensions, seeds and opacity. Add noise to an existing image, compare textures and save reusable settings.

Browser processingOriginal-size exportsPreview + staged edits

1. Open an image

Choose file

PNG, JPG or WebP · up to 20 MiB, 8 million pixels. Drop one file anywhere in the workspace.

No image loaded.

2. PNG Noise Generator

Task / extra operation

Gradient / mixing colors · 2–32 hex colorsColorSecond / replacement colorAmount / threshold · %Color tolerance · %Match-edge softness · %Edge radius · pixelsLevels per RGB channelCell / band size · pixelsRepeatable seedGradient direction

Generator canvas size

Width · pixelsHeight · pixels

Preview starts from the current working image. Keep an edit to chain operations. Original upload remains available with Reset.

The same dimensions, mode and seed reproduce the generated noise. Add seeded noise requires an input image; generating grayscale or color noise can start without one.

3. Preview & export

Choose a generator and preview, or load an image for effects.

ShowPreview backgroundClick the working image to pick a color.

Working image · click to pick

Your image will appear here.

Operation preview

Preview an operation to compare.

Load settings

Pixel operations work with browser-decoded 8-bit RGBA. They can discard source metadata, color profiles or higher bit depth. PNG compression compares decoded pixels, not byte-identical files. Animated images are rejected here; use animation tools instead.

When to use PNG Noise Generator

Create a procedural texture, noise sample or abstract image background.

The same dimensions, mode and seed reproduce the generated noise. Add seeded noise requires an input image; generating grayscale or color noise can start without one.

Using PNG Noise Generator

Generate repeatable grayscale or color noise PNGs with custom dimensions, seeds and opacity. Add noise to an existing image, compare textures and save reusable settings.

Open a PNG, JPG or WebP, or try the example. Generators can begin without a file.
Start with a quick preset or adjust the main task controls. Preview the change and compare it with the working image.
Download the result PNG. Keep edit commits a preview for a next operation; Undo and Reset original help you compare alternatives.

Example

Create a procedural texture, noise sample or abstract image background.
The same dimensions, mode and seed reproduce the generated noise. Add seeded noise requires an input image; generating grayscale or color noise can start without one.

Questions & answers

What is the main purpose of this tool?

Create a procedural texture, noise sample or abstract image background. The same dimensions, mode and seed reproduce the generated noise. Add seeded noise requires an input image; generating grayscale or color noise can start without one.

Are images uploaded for processing?

Image processing runs locally in your browser. Public pages can also load advertising and optional Analytics, as described in the privacy information.

Can I use large or animated images?

Still images are limited to 20 MiB and 8 million pixels. Animated images are rejected here; use the APNG or GIF tools.

Does export preserve the original file exactly?

Pixel operations use decoded 8-bit RGBA and encode a new PNG. Higher bit depth, metadata and color-profile details may change. Compare the preview and retain your original.