Please note, to get this data for your website you will need to update the JavaScript snippet. Go to App Settings -> Installation to copy the new JavaScript snippet.
Long tasks are tasks that block the main thread for 50 milliseconds or more.
Long tasks can cause issues such as:
- Clunky animations and scrolling affecting user experience
- High input latency
- A long delay when triggering event handlers
- A long delay between your application’s first-time-to-paint and when it becomes interactive
Understanding what causes these long tasks in your browser is crucial for improving performance. Since browser JavaScript is single-threaded, tasks that take longer than 50 milliseconds to finish can interfere with the user interacting with the website. This might cause render blocking behavior and flickering when loading your website.
We now display Long Tasks information in Experience. Read more about Long Tasks in Experience here.