Learn the benefits of Universal ID and how to make it available to your partners from your website using our client-side Javascript Library

Universal ID Overview

How does the ID5 Universal ID work?

By using the ID5 Universal ID, ad tech platforms can eliminate the need to sync their platform-specific IDs with their partners - the equivalent of needing a translator to help two people speaking different languages understand each other. When all platforms are using the Universal ID to transact against, it’s like they’re all speaking the same, common language. After configuring the ID5 JS API, you can make the Universal ID available to any partners on your page via a single Javascript variable. Your partners pass the ID to their platforms via their existing tags/pixels and can use the Universal ID to identity for the user for data collection/aggregation, bidding, optimization, etc., even when third party cookies are not supported.

Javascript API


The ID5 JS API is an open-source library available on Github: https://github.com/id5io/id5-api.js. All documentation for building and installing the library will be maintained in Github, but please reach out if you have any questions or need help.