MapToPoster — Generate Minimalist Map Posters with Python

Introduction

MapToPoster is an open-source Python library that converts geographic data into stylized map posters. Using OpenStreetMap data via OSMnx, it renders streets, water features, and green spaces into clean, print-ready designs. Developers and designers use it to generate custom map art programmatically, with full control over colors, styles, and output formats.

What MapToPoster Does

• Downloads OpenStreetMap data for any location worldwide
• Renders street networks, waterways, parks, and buildings
• Applies customizable color themes and typography
• Exports high-resolution PNG and PDF files for printing
• Supports bounding box or city name geocoding for area selection

Architecture Overview

MapToPoster builds on OSMnx for geographic data retrieval and matplotlib for rendering. It queries the Overpass API for map features within a bounding box, then layers streets by type with configurable line weights and colors. The rendering pipeline produces vector-quality output suitable for large format printing.

Self-Hosting & Configuration

• Install via pip with Python 3.8 or later
• Specify locations by city name, coordinates, or bounding box
• Choose from built-in themes or define custom color palettes
• Set output resolution and paper size for print compatibility
• Use the Python API for batch generation of multiple cities

Key Features

• Worldwide coverage through OpenStreetMap data
• Multiple built-in visual styles including minimal, dark, and watercolor
• Configurable layer visibility for streets, water, and greenery
• Vector-quality output at any resolution
• Programmatic API for generating map series

Comparison with Similar Tools

• Mapbox Studio — Cloud-based map styling; MapToPoster is local and code-driven
• Snazzy Maps — Google Maps styling; MapToPoster uses open data and produces print art
• prettymaps — Similar concept with a different rendering approach; MapToPoster has more built-in styles
• QGIS — Full GIS suite; MapToPoster focuses specifically on poster-style output

FAQ

Q: Can I use any location in the world? A: Yes, anywhere covered by OpenStreetMap, which includes virtually all populated areas.

Q: What output formats are supported? A: PNG, PDF, and SVG for both screen and print use.

Q: Can I customize the colors and fonts? A: Yes. Pass a custom theme dictionary with colors for each map layer and font settings.

Q: Is it suitable for commercial prints? A: The code is open source. Map data from OpenStreetMap requires attribution under ODbL.

Sources

• https://github.com/originalankur/maptoposter