User-Agent Switcher PRO от Matt Glow

Extension that allows user to easily switch the User Agent.
Useful for developer to test the site-view by quickly switching between desktop and mobile versions.
Useful for users who want more privacy while browsing.
Unlike other similar extensions this one also intercepts iframes and client-side javascript.

Features:
- selection of the preferred User-Agent from a list
- User-Agent customization
- User-Agent auto-switch every N requests or minutes
- User-Agent auto-switch following the "device OS type" rule (to see more, once installed, click on the blue question mark in the popup)

* to use the extension while browsing incognito, remember to enable the tick during installation!