Preview updates when you run
HTMLSource
ResultSandboxed preview
HTML is formatted locally in your browser.Scripts and form submissions are disabled in preview.
How to use the HTML Formatter / Viewer
- Paste or write HTML markup.
- Format the source to improve readability.
- Inspect the sandboxed preview and verify the rendered structure.
Example:
<h1>Hello</h1>HTML Formatter / Viewer FAQ
Is the HTML preview safe to inspect?
The preview is sandboxed in the browser. Still avoid pasting untrusted scripts or confidential content into online tools.