PMTiles

PMTiles is a cloud-native geospatial data format and a set of tools for creating cloud-optimized map tile archives. It organizes map tile pyramids into a single-file archive, allowing map data to be stored and retrieved from remote buckets without a dedicated backend database.

The project provides a map tile format converter to transform various data sources into this unified archive and a map tile server proxy that serves these archives to display systems using standard protocols. It enables the use of HTTP byte-range requests and metadata-driven indexing to retrieve specific tiles without downloading the entire file.

The system covers map data archiving, static map tile distribution, and offline map data storage. It includes command-line tools for uploading archives to cloud storage buckets.

Features

Cloud-Native Geospatial Formats - Implements a storage standard that allows map data to be retrieved from remote buckets without a backend database.

Byte-Range Optimized Storage - Archives map tile pyramids into a single file optimized for cloud storage access via HTTP byte-range requests.

Tile Pyramids - Organizes map data as a linear sequence of tiles across zoom levels for efficient random access.

Single-File Persistence - Packages a complete map tile pyramid into a single portable binary file.

Byte-Range Indexing - Uses a fixed-size header and directory to map tile coordinates to exact byte offsets within the archive.

Map Tile Hosting - Serves map tiles directly from cloud storage using a single archive file instead of a database server.

Map Tile Serving - Packages tiled map data into a single file for hosting on cloud storage without a dedicated server.

Byte-Range Requesting - Implements HTTP byte-range requests to retrieve specific map tiles without downloading the entire archive.

Geospatial Tile Coordinate Resolution - Calculates required byte ranges for specific map coordinates and zoom levels on the client side.

Offline Map Data Managers - Organizes map tile pyramids into a single portable file for use in offline environments.

Format Conversions - Transforms various tile data sources into a unified archive format for easier deployment.

Map Tile Archive Converters - Transforms various tiled map data formats into a unified archive for simplified distribution.

Static Hosting Utilities - Enables map data to be hosted on read-only cloud object storage without requiring an application server.

Vector Tile Serving - Serves tiles from a single archive file to map display systems using standard tile server protocols.

Vector Tile Distribution - Packages map data into a single file for easy sharing and hosting via standard HTTP range requests.

Map Tile Server Proxies - Provides a proxy that serves map tiles from a single archive via standard Z/X/Y tile server interfaces.

Vector Tile Conversion - Transforms various tile data formats into a unified archive file to simplify distribution.

protomapsPMTiles

Features

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