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HTML Preview

Preview HTML in a sandboxed iframe. Scripts stripped, viewport sizes, import .html, live render.

PrivateIn your browserInstantUnlimited

397 chars · 8 tags · stripped 0 script(s), 0 handler(s)

Scripts and on* event handlers are stripped before render. The iframe uses sandbox with no JavaScript execution.

How it works

1

Paste or import HTML

Enter a fragment or full HTML document. Import .html files up to 5 MB. Load sample to try it quickly.

2

Preview live

The sandboxed iframe updates as you type. Switch desktop, tablet, or mobile width. Toggle base body styles for fragments.

3

Copy or download

Copy your HTML or download preview.html. Rendering stays in this tab — nothing is uploaded.

Why preview HTML locally?

HTML preview renders your markup in a sandboxed iframe — useful for email templates, newsletter snippets, and quick layout checks. Scripts and on* handlers are stripped. Large inputs update with a short debounce, and you can open the sanitized document in a new tab.

Why use this tool

  • Live sandboxed iframe preview
  • Script and handler stripping
  • Desktop, tablet, mobile widths
  • Fragment and full document support
  • Import .html files
  • Unlimited use — no daily cap

Questions

What does HTML Preview do?

It renders HTML in a sandboxed iframe so you can see markup without running JavaScript from the snippet.

Are scripts allowed?

No. Script tags and inline on* handlers are removed before the iframe loads. The sandbox also blocks script execution.

Can I paste a full HTML page?

Yes. If the input includes doctype or html tags, it is used as a document. Otherwise it is wrapped in a minimal page.

What are the viewport buttons?

They constrain the preview iframe width to simulate desktop, tablet (768px), or mobile (375px) layouts.

Is my HTML sent to a server?

No. Preview runs entirely in this browser tab.

Is there a daily limit?

No. This tool is unlimited on the free plan.

If Easy24 helped, buy a coffee

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