Find out how your server can send hints to the browser about critical subresources.
Kenji Baheux
Barry Pollard
Published: June 23, 2022, Last updated: June 27, 2025
What is Early Hints?
Websites have become more sophisticated over time. As such, it's not unusual that a server needs to perform non-trivial work (for example, access to databases, or CDNs accessing the origin server) to produce the HTML for the requested page. Unfortunately, this "server think-time" results in extra latency before the browser can start rendering the page. Indeed, the connection effectively goes idle for as long as it takes the server to prepare the response.