Protomaps – フリーでオープンソースの世界地図

Protomaps: Making Interactive Cartography Accessible to All

Protomaps is an open source map of the world that aims to make interactive cartography accessible to hobbyists and organizations of all sizes. Developed by a solo developer, this project offers a range of features and services that can revolutionize the way we create and utilize maps. In this blog post, we will explore the key aspects of Protomaps and how it can benefit users in various industries.

Deployable as a Single Static File

One of the standout features of Protomaps is its deployability as a single static file on cloud storage. This means that the entire map of the world can be stored and accessed as a single file, making it incredibly efficient and easy to deploy. With this approach, users can save on storage costs and eliminate the need for complex infrastructure.

PMtiles: Efficient Tile Pyramids

Protomaps utilizes PMTiles, an open specification for single-file tile pyramids. These pyramids are built on compressed Hilbert ordering and can be queried via HTTP Range Requests. This innovative approach allows for efficient storage and retrieval of map tiles, ensuring fast and seamless user experiences.

Ultra-Low Latency with Edge Networks

To further enhance performance, Protomaps can be delivered through edge networks like AWS Cloudfront and Cloudflare. By leveraging Lambda or Workers, Protomaps achieves ultra-low latency, enabling users to access maps and data with minimal delay. This is especially crucial for applications that require real-time updates and responsiveness.

Seamless Integration with Mapping Libraries

Protomaps offers first-class support for popular mapping libraries like Leaflet and MapLibre GL. This means that users can easily integrate Protomaps into their existing projects and leverage the powerful capabilities of these libraries for vector cartography and visualization of their own geodata. This seamless integration streamlines the development process and empowers users to create stunning maps with ease.

Free Download Service for Base Map Layers

Protomaps hosts a free Download service that provides base map layers sourced from OpenStreetMap. Users can access and download custom basemap files, allowing them to create maps with the desired level of detail and style. Additionally, Protomaps offers pre-packaged data of the entire world, enabling users to quickly get started with their mapping projects.

Cost-Effective Mapping Solutions

One of the most significant advantages of Protomaps is its cost-effectiveness. By leveraging cloud infrastructure that users already use, Protomaps can significantly reduce mapping bills. Users can save hundreds of dollars per month and achieve the same level of functionality and performance at a fraction of the cost. This makes Protomaps an attractive option for both hobbyists and organizations with budget constraints.

Take Back Control of Your Maps

With Protomaps, users no longer need to rely on third-party services or API keys. By hosting their maps and data on Protomaps, users regain control over their map-based projects and sites. This ensures independence, security, and the ability to work offline indefinitely. Whether you are a hobbyist or a large organization, this level of control is invaluable.

Hosted API for Tiles

In addition to its map hosting capabilities, Protomaps also maintains a Tiles API. Users can obtain a free API key for non-commercial use or commercial use paired with a GitHub sponsorship. This hosted API allows users to access map tiles programmatically, opening up possibilities for dynamic mapping applications and seamless integration with other services.

Supporting Protomaps

Protomaps is a self-funded project by a solo developer with a mission to make interactive cartography accessible to all. To support the development and maintenance of Protomaps, users can download the open source world basemap tileset with a support plan on GitHub Sponsors or contribute to the development of open source features. By supporting Protomaps, users contribute to the growth and sustainability of this valuable tool for the mapping community.


Protomaps is a game-changer in the field of interactive cartography. With its open source nature, cost-effectiveness, and powerful features, it empowers users to create stunning maps and visualizations without relying on expensive third-party services. Whether you are a hobbyist, a small organization, or a large enterprise, Protomaps offers a flexible and accessible solution for all your mapping needs. Explore Protomaps today and unlock the full potential of interactive cartography.

For more information, visit the Protomaps website and start your journey towards interactive cartography excellence.


  • この記事はAI(gpt-3.5-turbo)によって自動生成されたものです。
  • この記事はHackerNewsに掲載された下記の記事を元に作成されています。
    Protomaps – A free and open source map of the world
  • 自動生成された記事の内容に問題があると思われる場合にはコメント欄にてご連絡ください。