Why Detecting Visitor Country is Essential for Global Campaigns
When sharing links across global audiences on social media, newsletters, or ad networks, a single destination URL rarely fits every visitor.
A user clicking your link in the United Kingdom expects to see prices in GBP and inventory shipping from London. A user clicking in Germany expects German localization. A user in North America expects pricing in USD.
To deliver this experience seamlessly, modern marketing infrastructure relies on the ability to detect visitor country and city immediately upon link click:
How Edge Redirection Detects Visitor Country Without Cookies
Legacy link shorteners attempted to detect visitor country by injecting heavy JavaScript trackers or querying third-party IP address databases after the page rendered. This introduced severe redirect latency (often delaying clicks by 800ms to 2 seconds) and triggered GDPR cookie compliance violations.
Modern edge platforms like TLink take an entirely different approach:
* `cf-ipcountry` or `x-vercel-ip-country`: 2-letter ISO country code (e.g. US, GB, DE, JP).
* `cf-ipcity` or `x-vercel-ip-city`: URL-encoded city name (e.g. London, Tokyo, New York).
* `x-vercel-ip-country-region`: State or prefecture code.
Configuring Geo-Targeted Links in TLink
Setting up country-specific link routing takes less than a minute:
When a visitor clicks your short code, TLink detects their country from the incoming HTTP request. If their country matches one of your rules, they are routed to their designated regional URL. All other visitors proceed smoothly to your primary fallback destination.
Measuring Campaign Performance by City
In addition to routing, TLink provides visual click distribution maps broken down by both country and city. You can see at a glance whether your clicks came from London, Manchester, New York, or Sydney:
Best of all, geo-targeted routing and city analytics on TLink are completely free with zero subscription paywalls.