A Free Online HTML Editor and Code Viewer
CodeViewIt is a fast, browser-based HTML editor and code viewer built for developers, students, and anyone who needs to write, format, or preview HTML without installing anything. Paste your code, edit it with full syntax highlighting, and switch to live preview instantly to see exactly how your page will render.
Key Features
- Live HTML preview — toggle between code and a rendered view in one click.
- Syntax highlighting for HTML, CSS, and JavaScript powered by CodeMirror.
- In-code search to quickly find and jump to any text in your file.
- Dark and light themes to suit your environment.
- Undo, redo, and save your HTML file directly from the browser.
- Fullscreen preview for distraction-free testing.
- No signup, no install — everything runs in your browser.
How to Use CodeViewIt
- Paste or type your HTML into the editor.
- Use the Code/Preview toggle to view your rendered page live.
- Edit with syntax highlighting and search as needed.
- Save your file or open the preview in fullscreen when you're done.
Frequently Asked Questions
Is CodeViewIt free to use?
Yes. CodeViewIt is completely free, with no signup or installation required.
Is my code stored on your servers?
No. Your code is processed entirely in your browser. Nothing is uploaded or stored unless you explicitly choose to save it.
Which languages does the editor support?
The editor provides syntax highlighting for HTML, CSS, and JavaScript, with live preview for HTML documents.