Book a 15 Minute Consultations

If we can help in any way, please don't hesitate to set a time to meet or talk, or leave your details and we'll get back to you.

Looking for a job?

Apply here
Hire Engineers

Building Interactive Maps with Leaflet.js and OpenStreetMap - A Cost-Effective Solution

Introduction

Modern web applications often require the integration of interactive maps to enhance user experience, visualise geospatial data, and offer location-based services. However, commercial mapping solutions like Google Maps or Mapbox can become expensive over time, especially for startups or non-profit organisations.

This case study examines how a team successfully developed scalable and interactive maps utilising Leaflet.js, a lightweight JavaScript mapping library, and OpenStreetMap (OSM), a collaborative, open-source map data project. The focus was on achieving a balance between functionality, user experience, and cost-effectiveness.

Problem Statement

A mid-sized travel platform aimed to launch an “Explore India” feature to allow users to:

  • Search for tourist spots by region and category
  • Visualise nearby points of interest
  • View rich, interactive maps with custom markers and popups
  • Avoid high licensing and usage costs from third-party APIs

Their existing prototype used Google Maps, but monthly API costs exceeded budget expectations, especially with increased traffic and map loads. Hence, they needed a low-cost, high-performance alternative.

Solution

After evaluating multiple options, the development team opted to use:

  • Leaflet.js : An open-source JavaScript library for mobile-friendly interactive maps
  • OpenStreetMap (OSM) : A free, editable world map built by a global community of contributors

Together, these technologies enabled the team to create a fully customised, interactive map application without licensing restrictions or usage fees.

Feature List

01
Independent deployment

pipelines for each brand

02
Centralized

reusable UI components.

03
Brand-specific

theming powered by Tailwind CSS.

04
Automated testing

with Cypress for consistent quality.

05
Real-time scaling

without cross-brand dependencies.

Tech and Solution Stack

Frontend

React.js, Leaflet.js, SCSS

Backend

Node.js, Express, Overpass API, Redis (for caching)

Data Sources

OpenStreetMap, Custom MongoDB place data

Plugins

leaflet.markercluster, leaflet-geosearch, leaflet-routing-machine

Hosting

The complete solution was hosted on a scalable infrastructure stack

  • Frontend : Deployed via CDN for high-speed delivery.
  • Backend : Hosted on cloud instances with auto-scaling.
  • Caching: Redis is used for quick response times and reduced Overpass API loads
  • Map Tiles: Sourced from open-source tile servers, with fallback options in case of heavy traffic

Team & Support

Golden Eagle IT Technologies Pvt. Ltd. deployed a cross-functional team for this project:

  • Frontend Developers (React + Leaflet.js)
  • Backend Developers (Node.js + API integration)
  • UI/UX Designer for map layout and responsivenes
  • Data Engineer for OSM query optimisation
  • QA Engineer for cross-platform testing
  • Project Manager for coordination and milestone tracking

Regular sprint reviews and demo sessions ensured alignment with client goals throughout the development cycle.

Maintenance

Post-deployment, Golden Eagle IT Technologies continues to provide:

  • Ongoing technical support and troubleshooting
  • Performance monitoring and cache optimisation
  • OSM data refresh and API update handling
  • Mobile compatibility audits
  • Plugin and library version upgrades

A dedicated support plan was offered to handle long-term enhancements and user feedback implementation.

Conclusion

By leveraging Leaflet.js and OpenStreetMap, the development team delivered a powerful, cost-effective, and customizable mapping solution tailored to the client’s needs. This approach not only eliminated recurring API fees but also gave the team greater flexibility and independence in shaping the user experience.