Some web sites only allow Microsoft Internet Explorer and force you to use only one specific web browser. These web sites detect your browser by the User Agent String sent to the sites by the web browser. By spoofing this User Agent String, you can fool these web sites into thinking that you are using a different web browser. The Opera web browser allows you to spoof or identify itself either as Microsoft Internet Explorer or Firefox web browser. Here is how :
- Run your Opera browser. Open the website you want the User Agent String to be spoofed for.
- Press the F12 key on your keyboard. This will make a menu popup in the Opera browser.
- From the popup menu, choose Site Preferences as shown.
- It will open the Site Preferences window. Click on the Network tab to select it.
- In the Browser identification field you can select how you want Opera to identify as. You can choose Firefox, Internet Explorer other than the Opera web browser itself from the drop-down list.
- Click on OK to save the settings.
Note that the site preferences are only site wide — they are used only on the currently opened site (for which you set the settings). If you want to identify Opera as some other web browser for other sites too, then follow the same steps on all those sites as well.