CSS Peeper is a Chrome extension designed for designers. Inspect the CSS of a web page very easily and get all the info you want: fonts, colors, line height, button size, CSS Peeper hides nothing from you.

Frontend Toolkit is a tool for optimizing or converting SVGs, converting a color code or even generating a favicon.

CodePen allows you to create, test and share code online (HTML/CSS/JS). It is the essential tool for web designers and integrators who wish to find inspiration.

Clippy automatically generates the clip-path in CSS based on the chosen shape.

CSS box-shadow gallery.