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Internationalization Tag Set (ITS) is an extension of HTML markup which defines additional attributes and elements that can be used to improve suitability of web page for localization, internationalization and automatic translation.

Explore our ITS docs

Attribute reference

A reference guide to all the available ITS attributes.


For human fridendly introduction to ITS please watch the following video


List of tools supporting ITS is available at

You can check whether your page with embedded ITS markup is valid by using Nu Markup Validation Service.

Additional Resources