Sec,ch,ua,platform:,""windows"" «RELIABLE · 2026»

: Because it's low entropy, browsers like Chrome and Edge send it by default with almost every request without the server needing to ask. 💻 How it works in practice

: These hints are generally only sent over secure HTTPS connections to prevent data interception. sec,ch,ua,platform:,""windows""

Historically, browsers sent a single, long "User-Agent" string containing every detail about the device. This made it easy for websites to "fingerprint" users and track them across the web. : Because it's low entropy, browsers like Chrome

: Client Hints break this information into smaller, specific pieces. : Because it's low entropy