$ run --tool
HTML Preview
Paste raw HTML and see a live, sandboxed render instantly.
Live preview
Features
- ✓Instant live preview in a sandboxed iframe
- ✓Safe by default — scripts run only inside the sandboxed frame
- ✓Copy and download your HTML in one click
- ✓No signup, no watermark
How to use
- 1Paste or type your HTML into the editor
- 2The live preview updates as you type
- 3Copy your HTML or download it as a .html file
Frequently asked questions
Is my HTML sent anywhere?+
No. Everything renders locally in your browser inside a sandboxed iframe.
Will JavaScript inside my HTML run?+
Yes, inside the sandboxed preview frame only — it cannot access the parent page.
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