Building a Lightweight Website Monitor with Cron and an API

📰 Dev.to · Sen Shi

Build a lightweight website monitor using Cron and an API in under 100 lines of Node.js to track website changes efficiently

intermediate Published 7 May 2026

Action Steps

Set up a Node.js environment to run the monitor script
Use Cron to schedule the script to run at regular intervals
Configure the API to send notifications when website changes are detected
Implement a hashing function to track website changes
Test the monitor script to ensure it's working correctly

Who Needs to Know This

This project is beneficial for developers and DevOps teams who want to monitor website changes without relying on complex infrastructure, allowing them to quickly identify and respond to updates

Key Insight

💡 Using Cron and an API, you can create a simple yet effective website change monitor without needing a database or queue