Make Opera behave like Internet Explorer or Firefox

April 2018

Through a simple modifiction of the "Spoof UserAgent ID" parameter, you can make Opera behave like other browsers (Internet explorer, Mozilla Firefox)
To access these settings:
  • Open Opera.
  • In the address bar ,type the following command:
    • about:config
  • Once in the Preferences editor, scroll to the "User agent" section.

Change the value next to "Spoof UserAgent ID" as follows

1 = Opera
2 = Mozilla
3 = Internet Explorer

Click on Save to validate.
Published by deri58. Latest update on February 7, 2013 at 01:47 PM by deri58.
This document, titled "Make Opera behave like Internet Explorer or Firefox," is available under the Creative Commons license. Any copy, reuse, or modification of the content should be sufficiently credited to CCM (
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