Indoor Mapping Data Format

  • Version: 1.0.0.beta.2
  • Last update: March 04, 2019


Indoor Mapping Data Format (referenced throughout this document as "IMDF") provides a generalized, yet comprehensive model for any indoor location, providing a basis for orientation, navigation and discovery. In this release there are also detailed instructions for modeling the spaces of an airport and a shopping mall.

Developers can access both text and visual examples of all features, along with clear explanations of all terms. IMDF conforms to RFC 7946, ensuring compatibility and transferability of the data. IMDF is lightweight, mobile friendly, and can be rendered on any device, OS, or browser.

For GIS and BIM specialists, there is support for IMDF in many of your favorite tools.

IMDF is used by Apple to provide Indoor Positioning support with Core Location. Indoor maps integrated with indoor positioning can establish the foundation for a wide range of consumer and enterprise location-based apps and websites.

IMDF Terms of Use

Questions about the spec?


The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", “SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.

IMDF describes the content and characteristics of an archive. This includes the data, non-functional requirements, and other factors necessary to provide Organizations and other interested parties with a complete and comprehensive description of the expected condition of an archive at the time of ingestion. IMDF does not detail the guidelines for the production of the data itself.

Feature Types