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HTML Viewer

Paste HTML code and see a live rendered preview alongside the source. Instantly visualise how your markup looks in a browser — no server needed.

  • 100% free
  • No signup
  • Runs in your browser
Common uses: html viewer · html preview online · render html online · html code preview · live html viewer

Used 30.6K times today

How to Use HTML Viewer

  1. 1

    Paste your HTML

    Enter any HTML snippet or full page into the editor on the left.

  2. 2

    See the live preview

    The right panel renders your HTML instantly in a sandboxed iframe.

  3. 3

    Toggle split view

    Switch between side-by-side and stacked layout to suit your screen.

Frequently Asked Questions

Is the preview sandboxed?
Yes. The HTML is rendered inside a sandboxed iframe so scripts cannot access the parent page.
Can I include CSS and JavaScript?
Yes. Add <style> or <script> tags inside your HTML and they will execute within the sandboxed preview.

Embed This Tool

Add this tool to your website for free. Just copy and paste the code below:

<iframe src="https://utilko.com/embed/html-viewer/" width="100%" height="500" frameborder="0" title="HTML Viewer"></iframe>

About HTML Viewer

The HTML Viewer on Utilko gives you an instant split-screen preview of any HTML code. Paste your markup on the left and see it rendered live on the right — perfect for checking email templates, component snippets, or learning HTML without spinning up a local server.

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