PHP-Noise — Free Procedural Noise Generator API (No Key)

TL;DR

PHP-Noise is a free API that generates procedural noise textures using various algorithms including Perlin noise, simplex noise, value noise, and Worley (cellular) noise. Configure dimensions, scale, octaves, seed, and output format. Generate terrain heightmaps, cloud textures, marble patterns, and organic-looking procedural textures. Returns PNG images or raw data arrays. No API key. Perfect for game developers, generative artists, and procedural content generation.

Quick start: https://php-noise.com/noise/512/512/?c=5&f=0.3&s=0.5&o=4&t=Perlin

No API key needed — just make a request!

How to Use This API

1. Generate Perlin Noise Texture

https://php-noise.com/noise/512/512/?c=5&f=0.3&s=0.5&o=4&t=Perlin

2. JavaScript — Embed Noise Image

const noiseUrl = 'https://php-noise.com/noise/256/256/?' +
  new URLSearchParams({
    c: 5,       // color scheme
    f: 0.3,     // frequency
    s: 0.5,     // seed
    o: 4,       // octaves
    t: 'Turbulence'
  });
document.getElementById('noise').src = noiseUrl;

3. Python — Generate and Save

import requests

params = {
    'c': 3,      # Color scheme (1-10)
    'f': 0.2,    # Frequency
    's': 0.7,    # Seed
    'o': 5,      # Octaves
    't': 'Perlin' # Type
}
img = requests.get(
    'https://php-noise.com/noise/512/512/',
    params=params
).content

with open('terrain_noise.png', 'wb') as f:
    f.write(img)
print(f"Saved terrain_noise.png ({len(img)} bytes)")

Generate Perlin noise: https://php-noise.com/noise/512/512/?c=5&f=0.3&s=0.5&o=4&t=Perlin

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Frequently Asked Questions

What noise types are available?: Perlin, Simplex, Value, Worley (Cellular), Turbulence, Marble, Wood, Clouds, and more. Each produces a different visual style for different applications.
What parameters can I configure?: Width/height (max 1024), color scheme (c: 1-10), frequency (f: 0.01-1.0), seed (s: 0-1), octaves (o: 1-8), and noise type (t).
What output format is used?: The API returns PNG images directly. Set the URL as an image source or download the binary data. No JSON metadata is returned — just raw image data.
Can I control the colors?: Choose from 10 built-in color schemes via the c parameter. Different schemes produce different palette mappings based on the noise values.
What are octaves?: Octaves control the level of detail. More octaves (higher number) produce more detailed, complex noise patterns. Each octave doubles the frequency.
Is there a rate limit?: PHP-Noise is a free service. Reasonable usage is permitted. Images are generated on-demand and may take a moment depending on size and octave count.

API Details

API URL: https://php-noise.com/noise/{width}/{height}/
Documentation: php-noise.com
Category: Developer Tools
Authentication: Not Required
Geographic Coverage: Global

What You Can Build

Game terrain generator creating heightmaps from procedural noise
Procedural texture tool for generating seamless backgrounds and patterns
Cloud image generator for skybox textures in 3D applications
Generative art gallery producing unique abstract noise artworks
Procedural map generator with biomes determined by noise value ranges