Vertopal — Free Online Converter
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Convert HTML HTML4 markup documents to HTML HTML5 format online and free.

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Hypertext Markup Language (.html)

HTML HTML4 Converter

Hypertext Markup Language (.html)

HTML HTML5 Converter

How to convert HTML HTML4 to HTML HTML5?

Upload HTML HTML4 File

Click the Choose File button to select the HTML HTML4 file.


Select HTML HTML4 Tools

Check the file preview quickly and use HTML HTML4 to HTML HTML5 tools if you need to change the conversion settings.


Download Your HTML HTML5

Let the file convert, then you can download your HTML HTML5 file right afterward.


Frequently Asked Questions

How to change HTML HTML4 format to HTML HTML5?

To change HTML HTML4 format to HTML HTML5, upload your HTML HTML4 file to proceed to the preview page. Use any available tools if you want to edit and manipulate your HTML HTML4 file. Click on the convert button and wait for the convert to complete. Download the converted HTML HTML5 file afterward.

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