Headers for Hackers - Understanding and Optimizing HTTP Headers

Dive into the world of HTTP headers with this comprehensive 46-minute conference talk by Andrew Betts at performance.now() 2018. Explore a wide range of topics including Clear Site Data, HTTP Archive, CSP, Strict Transport Security, Referral Policy, and more. Learn about client hints, preloading, early hints, and server timing. Discover how to leverage JavaScript and Feature Policy for enhanced performance. Gain insights into HTTP header compression and adoption trends. Access accompanying slides for visual reference and connect with the speaker via Twitter for further discussions.

Introduction
HTTP Headers
Clear Site Data
HTTP Archive
Expired
XCache
Frame Ancestors
Via
CSP
Strict Transport Security
Referral Policy
CrossOrigin
Request headers
Client hints
Link
Linkrel Preload
The Problem
Early Hints
Server Timing
Waiting
JavaScript
Feature Policy
HTTP Header Compression
Recap
Header adoption