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Online HTML Utility

HTML Preview

Preview HTML instantly in a sandboxed iframe. Switch viewport widths, zoom, and optionally allow scripts.

100% Browser-Based — HTML never uploads to our servers. All processing runs locally in your browser.

Tip: drag & drop a .html file onto this card, or use Upload below.

Tool Options

Results

Results will appear here…

How It Works

Fast HTML utilities that run entirely in your browser.

1
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Paste or upload

Paste HTML or upload a .html file. Nothing is uploaded to our servers.

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Process in browser

Parsing and transforms run locally with DOMParser — 100% client-side.

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3
⇩

Copy or download

Export as HTML, TXT, or JSON instantly.

Zero server upload — your HTML stays on your device.

About HTML Preview

Live HTML preview with desktop/tablet/mobile widths, zoom, light/dark chrome and sandboxed iframe. Scripts off by default — free browser tool. Built for developers, SEO, and content workflows with instant copy and export.

FAQs

No. All HTML tools process your content in the browser. FreeConverter servers never receive your HTML.

Yes. FreeConverter.app online HTML tools are free to use.

No account or installation is required.