Hey everyone, I'm collecting resources over at WebDev Town. Here is a summary of all the websites I've found that you can use to get creative backgrounds for your website.
Let me know if you know a website I've missed :)
Ambient Canvas Backgrounds
A set of animated ambient canvas backgrounds with different effects.
Animated Background Headers
A collection of 30+ animated backgrounds for websites and blogs.
Animated CSS Background Generator
A collection of pure CSS animated backgrounds with the possibility to customize.
A beautifully curated selection of cool, customizable backgrounds.
CSS Background Patterns
A bunch of cool pure CSS background patterns.
A nice collection of 100+ free CSS patterns.
CSS Gradient Animator
A website to generate an animated gradient background.
CSS Gradient Editor
A tool for creating colorful CSS gradient backgrounds and patterns.
A nice collection of background patterns made with CSS gradients.
CSS Plasma Background Generator
CSS3 Patterns Gallery
A gallery of CSS patterns, which are also editable right in the browser.
Decorative WebGL Backgrounds
A collection of decorative animated background shapes powered by WebGL and TweenMax.
Flat Surface Shader
A simple, lightweight Flat Surface Shader for rendering lit triangles.
A generator for beautiful SVG patterns.
A website, which combines the most popular gradient collections.
A huge collection of beautiful CSS gradients.
A tool to generate tailwind gradients for your backgrounds, texts & shadows.
A cool collection of repeatable SVG pattern backgrounds by Steve Schoger.
A cool library for animated image backgrounds.
A website to create cool interactive backgrounds.
A generator for seamless, unique, royalty-free patterns, which are exportable as SVG, JPEG, or PNG.
A compiled list of beautiful patterns by different designers.
An online pattern generator to create repeatable SVG patterns.
A CSS only library to fill your empty background with beautiful patterns.
A generator for different dynamic backgrounds.
A huge list of more than 500 subtle background patterns and textures.
A collection of customizable SVG-based repeating patterns and backgrounds.
SVG Gradient Wave Generator
Generate SVG waves using gradients, randomness, and other parameters.
A pretty space animation out of triangles using canvas.
A large collection of CSS patterns, which can be filtered and colorized.
Triangle Pattern Maker
A cool generator for triangle patterns with light effects.
Create colorful low poly triangle patterns that can be used as wallpapers and website assets.
A gallery of customizable animated 3D & WebGL backgrounds using three.js.
A generator for smooth gradient waves in multiple layers, that flowing slowly.
A generator to create beautiful SVG backgrounds for your UI designs.
Your Lucky CSS Pattern
Get a nice random background from a collection of more than 100 CSS patterns.