Jomatter

Jomatter is a free, browser-based toolkit for people working with HTML, CSS, and JavaScript who need to prepare and check code without signing up. It brings code formatting, minifying, validation, analysis, generation, and testing into one collection of browser tools. Users can use the tools to make code more readable, reduce its size, inspect it, create code, and test it directly in the browser. Because the service is browser-based and requires no signup, it offers a straightforward way to handle code preparation and checking tasks in one place before or during development.