ISO 19177-1:2026

Overview

ISO 19177-1:2026 - Geographic information - Geospatial application programming interface (API) for tiles - Part 1: Core defines the essential behaviors for web APIs that deliver access to tiles from one or more geospatial data resources. These APIs are foundational for efficiently distributing, visualizing, and processing large geospatial datasets via the web. The standard describes how users and systems can:

• Discover which geospatial resources are available as tiles,
• Access tile set metadata, including tile matrix sets and spatial limits,
• Request and retrieve individual tiles.

By focusing on interoperability and modularity, ISO 19177-1:2026 enables developers to embed standardized tile retrieval into web APIs for geographic information, regardless of whether their API implements the OGC API – Common standard. This makes it an essential resource for organizations developing spatial data infrastructures, mapping applications, or integrating geospatial web services.

Key Topics

• Tile Discovery: The standard specifies how a web API should make customers aware of which datasets or data collections are accessible as tiles, supporting seamless integration with client applications.
• Tile Set Metadata: Defines requirements for exposing metadata about available tile sets, such as the associated tile matrix set, partitioning scheme, spatial limits, and supported formats. This metadata ensures applications can correctly interpret and request tiles.
• Tile Access and Retrieval: Describes the core requirements to request individual tiles, including how to specify parameters like tile matrix, row, column, and tile matrix set identifiers.
• Conformance and Extensibility: The “core” conformance class is structured to be easily combined with other OGC API standards, making it a flexible basis for extended functionality, such as additional encodings or query methods.
• Resource Representation: The specification includes guidance on representing tile sets and tile set lists, supporting multiple encoding options and data representations like OpenAPI or XML.
• Query Parameters: Standardizes parameters for collection selection and temporal queries, improving consistency and discoverability across implementations.

Applications

APIs conforming to ISO 19177-1:2026 are integral to a broad range of geospatial applications, including:

• Web-based mapping - Efficiently delivers tiled map, image, or vector data for interactive web maps requiring scalable, high-performance visualizations.
• Geospatial data dissemination - Supports national mapping agencies, environmental monitoring, and remote sensing platforms in publishing their geospatial resources as standardized tile services.
• Mobile and desktop GIS - Enables client software to consume and cache tiles for offline use or on-the-fly rendering.
• Analytics and processing pipelines - Facilitates the integration of tiled geospatial data into workflows for analytics, change detection, or thematic mapping.
• Cloud-based spatial data services - Forms the foundation for scalable spatial data access in enterprise and cloud environments, supporting performance and load distribution through caching and parallel requests.
• Interoperable services - Promotes data sharing and integration across systems and organizations by adhering to recognized international standards for geospatial APIs.

Related Standards

ISO 19177-1:2026 operates within a broader framework of geospatial and API standards. Key related standards include:

• OGC API – Tiles: Provides the foundation upon which ISO 19177-1:2026 is based, ensuring compatibility with the broader OGC suite.
• OGC API – Common: Offers foundational elements for web APIs, which can be integrated with the core tile specification for additional interoperability.
• OGC Two Dimensional Tile Matrix Set and Tile Set Metadata (OGC 17-083r4): Explains tiling schemes, matrix sets, and metadata models essential for tile partitioning.
• ISO 19168-1: The ISO equivalent of OGC API – Common, facilitating API building block reuse.
• Other OGC API Parts: May be combined with ISO 19177-1:2026 to extend web API capabilities (e.g., for coverages, features, or maps).

ISO 19177-1:2026 establishes a robust, interoperable foundation for modern geospatial web APIs, empowering organizations to make spatial data more accessible, discoverable, and usable across a variety of platforms and applications.