SVG Backgrounds is a tool to create eye-catching backgrounds or patterns for websites & blogs. The tool allows you to customize and apply backgrounds fast. SVGs enable full-screen hi-res visuals with a file-size near 5KB and are well-supported by all modern browsers.
Subtle Patterns by Toptal offers a wide variety of subtle patterns and backgrounds that are free and of the highest quality.
Hero Patterns is a collection of repeatable SVG background patterns for designers and developers to use on your web projects.
Transparent Textures offers a wide range of textures that are transparent, making it easy to add color. You can download an image or the CSS code for each texture.