How to Personalize Your Website by User Location (Free API + JavaScript)

Every major website personalizes content by location — Amazon shows local currency, Netflix suggests regional content, news sites display local weather. You can do the same thing with a few lines of JavaScript and a free API. In this tutorial, I'll show you how to detect your visitor's location and use it to personalize your website — no signup required. What We're Building A lightweight location detection system that: Detects the visitor's country, city, and timezone Displays local currency symbols Shows location-aware greetings Works entirely client-side (no backend needed) Step 1: Detect the Visitor's Location First, let's get the visitor's IP and location data: async function getVisitorLocation () { // Get the visitor's IP const ipRes = await fetch ( ' https://api.frostbyte.world/ip/json ' ); const { ip } = await ipRes . json (); // Get geolocation data for that IP const geoRes = await fetch ( `https://api.frostbyte.world/api/geo/ ${ ip } ` , { headers : { ' X-Api-Key ' : ' YOUR_AP