Firefox - User Agent Configuration

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user agent configuration for firefox.

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Agent String

• Type “about:config” into the address bar
• Right click and choose New / String to create a new key

• Name it “general.useragent.override”
• Put the following value, to go to:
  • Firefox 9:

    Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1
    

  • Firefox 3.6.3:

    Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3
    

  • A list of all Firefox version and their agent string

Agent Details

agent_str: 	Mozilla/5.0 (Windows NT 6.1; rv:10.0.2) Gecko/20100101 Firefox/10.0.2
robot_ind: 	0

a0: 	Mozilla/5.0
b0: 	Windows NT 6.1
b1: 	rv:10.0.2
e0: 	Gecko/20100101
e1: 	Firefox/10.0.2
Platform Rule: 	800
Naming Rule: 	321
agent_id: 	173856
Browser: 	Firefox 10

Documentation / Reference

• A list of all Firefox version and their agent string