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Learn how to use the CSS Custom Highlight API to dynamically highlight text ranges on a webpage using JavaScript and CSS. This guide walks you through creating custom highlights for search results, text editors, or any application requiring precise text styling—without altering the DOM.

The Attribution Reporting API is an experimental web feature designed to measure ad conversions while preserving user privacy. It eliminates the need for third-party cookies, providing a more secure and privacy-compliant way to track ad performance. This guide will introduce you to the API’s concepts, walk through its key components, and provide sample code for implementing it.