Fast • Free • Private

Online HTML Viewer Free Online Tool

Upload or paste HTML and inspect the source beside a secure sandboxed live preview.

✓ Free to use⚡ Instant results🔒 Private processing

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Your file is processed in your browser and is not uploaded to our server.

Purpose-built online tool

What the Online HTML Viewer does

Upload or paste HTML and inspect the source beside a secure sandboxed live preview.

The Online HTML Viewer is an online viewer rather than a converter: it opens supported content in a format-appropriate preview, such as a searchable table, formatted document, page view or structured code panel.

Practical uses

When to use the Online HTML Viewer

Inspect an unfamiliar file before opening it in a larger application.
Search rows, text or structure during a quick data check.
Confirm that a downloaded or received file contains the expected information.

Three easy steps

How to use the Online HTML Viewer

1Choose the file you want to process with Online HTML Viewer.
2Review the preview and use only the options needed for this conversion.
3Start the conversion, then download the finished file when it is ready.

Better output

Tips for the best Online HTML Viewer result

Use the viewer designed for the exact extension because CSV, spreadsheets, documents and code require different layouts.
Check detected headers, delimiters, sheets, pages or formatting before relying on the preview.
Open critical files in their native application when exact editing, formulas, macros or print layout matter.

Important limitation

Online preview is designed for inspection and does not reproduce every feature of a desktop editor. Macros, advanced layout, external data, embedded objects or unsupported codecs may be omitted.

Helpful answers

Online HTML Viewer frequently asked questions

Is this Online HTML Viewer free to use?

Yes. The Online HTML Viewer is free to use and does not require registration or software installation.

Is my information or file kept private?

Yes. The included file tool processes the selected file locally in your browser instead of uploading it to this website.

Does this tool work on mobile devices?

Yes. The tool has a responsive interface and works in current mobile and desktop browsers with JavaScript enabled.

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