Sec,ch,ua,arch:,""x86"" -

: If you offer software downloads, you can automatically serve the x86 installer instead of the ARM version without asking the user.

If you need this information on the client side, you can use the NavigatorUAData API . Because it is high-entropy data, it returns a Promise: Detecting Microsoft Edge from your website sec,ch,ua,arch:,""x86""

This HTTP request header tells a server exactly what kind of processor instruction set the browser is running on. When you see Sec-CH-UA-Arch: "x86" , it indicates the device is powered by an Intel or AMD processor, as opposed to "arm" architectures common in mobile devices and newer MacBooks. Why Does It Matter? : If you offer software downloads, you can

: Tailor resource-heavy scripts or assets to the specific hardware capabilities of the user's machine. When you see Sec-CH-UA-Arch: "x86" , it indicates

: On the next request, the browser will include: Sec-CH-UA-Arch: "x86" Accessing via JavaScript

To see this header in your server logs, you must first "opt-in" by sending an Accept-CH response header to the browser.

Historically, developers had to "sniff" the User-Agent string—a messy process prone to errors and spoofing. Sec-CH-UA-Arch provides a cleaner, structured way to: