htmlviewr – Online HTML viewer, editor, and beautifier

Summary: htmlviewr is a free online tool for viewing, editing, and beautifying HTML, CSS, and JS code with real-time previews. It enables quick web code previews on both mobile and desktop browsers.

What it does

htmlviewr allows users to paste or upload HTML code and instantly preview it in the browser, supporting live editing and formatting of HTML, CSS, and JavaScript.

Who it's for

It is designed for developers and users needing fast, accessible web code previews without installing software.

Why it matters

It provides a lightweight alternative to desktop editors like VS Code for immediate web code visualization on any device.