The ilivalidator tool checks whether data in the INTERLIS 1 and 2 transfer format (*.itf/*.xtf) complies with the associated model (*.ili). License terms and further information about the ilivalidator can be found here:

Software errors of the ilivalidator or new tool requirements can be registered directly on the developer platform GitHub.


INTERLIS is a conceptual modeling language designed to ensure long-term compatibility between different systems. INTERLIS is software and system independent.

The most currently used version is INTERLIS 2, version 2.3.

INTERLIS - who is behind it?

COGIS (Coordination, Geo-Information and Services) is the guardian of the formal language INTERLIS and provides the necessary information and documents. The activities of the Federal Administration in the field of geoinformation (GI) and geoinformation systems (GIS) are also coordinated by COGIS. See swisstopo (COGIS)

You can find our contact details here.