> For the complete documentation index, see [llms.txt](https://integrations.impact.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://integrations.impact.com/integration-guides/for-brands/tracking-integrations/javascript-tag-utt/introduction.md). # Introduction to UTT JavaScript tracking is a method of tracking and reporting online sale conversions to impact.com. It consists of a few JavaScript code snippets placed on your site, usually with a tag manager, or manually within the HTML documents of your site. These tags work together to identify customers across your site, track conversions, and report order (and item) data. ## How it works * The **Universal Tracking Tag (UTT)** is a minified script (a compact, single-line version of the tag that loads quickly) that runs on every page. * The `identify` function uses dynamic identifiers (values unique to each visitor, such as a customer ID) and cookies on your site to identify visitors. * The `trackConversion` function is a small JavaScript function placed on your site's confirmation page (i.e., "Order Confirmed" or "Thank You" page) that is dynamically populated with the customer's identifiers and information about their order, which is then sent to impact.com. The placement of these tags is not strictly tied to specific HTML sections; however, they must be placed after the data layer is loaded on your site, and strictly in the correct order: the UTT must load first, followed by the invoked functions. ## What to expect At a high level, the integration is split into two parts: 1. Implement the impact.com UTT and functions onto your site. 2. Complete end-to-end testing to confirm your implementation is working correctly. ## Check before integrating * See [Create an Event Type](https://help.impact.com/brand/what-would-you-like-to-learn-about/platform-features/event-types/create-an-event-type) for the steps to create your UTT event type. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://integrations.impact.com/integration-guides/for-brands/tracking-integrations/javascript-tag-utt/introduction.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.