Question 1

Is my code sent to a server?

Accepted Answer

No. Everything runs in your browser. Your code never leaves your device — there are no uploads, no accounts, and no server-side processing.

Question 2

What languages does this editor support?

Accepted Answer

HTML, CSS, and JavaScript. Each language has its own editor pane with syntax highlighting, auto-completion, and bracket matching powered by CodeMirror 6.

Question 3

Can I use this HTML editor offline?

Accepted Answer

Yes. After your first visit, the editor and all its dependencies are cached in your browser. You can write and preview code without an internet connection.

Question 4

How does the code formatting work?

Accepted Answer

The editor uses Prettier, the same formatter used by most professional codebases. It runs entirely in your browser. Click Format or press Shift+Alt+F.

Question 5

Can I export my code?

Accepted Answer

Yes. Export as a ZIP file (index.html, style.css, script.js) or as a single standalone HTML file with CSS and JS inlined.

Free Online HTML Editor — Write HTML, CSS & JavaScript with Live Preview