CSS Sprite Sheet Generator - Combine Images for Faster Websites

Sprite sheets are an old optimization with a new lease on life. Browser HTTP/2 makes a hundred small image requests cheap, but every request still costs you parse time, decoder time, and memory. For icon-heavy interfaces - admin panels, dashboards, design systems - combining icons into a single sprite sheet is still measurably faster, and it's the standard approach for game engines and pixel-art assets. OptiPix's free Sprite Sheet Generator packs your images into one PNG and gives you the CSS, JSON, and SCSS to use them - without any account or upload.

What makes OptiPix's Sprite Sheet Generator different

Most sprite generators online are old PHP scripts that upload your files, give you a sprite sheet, and call it a day. The good ones are command-line tools that require Node, npm, and a build step. OptiPix gives you both worlds: a fully visual, browser-based tool that produces the same outputs as the CLI tools.

Key features

How to use it

1. Open the Sprite Sheet Generator.

2. Drop your icon PNGs onto the dropzone.

3. Pick Packed for the smallest sheet, or Grid if you want a fixed column layout.

4. Adjust padding to taste, then click ZIP to download the sprite sheet plus the CSS, JSON, and SCSS files.

Who is it for

For the icons you feed in, our Image Compressor and Image to SVG tools are useful neighbors - compress raster icons before packing, or vectorize them so you don't need a sprite sheet at all. And if you want to embed the resulting sprite sheet directly into a stylesheet, our Image to Base64 tool will convert it to a Data URI.

Try the Sprite Sheet Generator free at OptiPix.art - your images never leave your browser.