Usage

In Utilu Mozilla Firefox Collection you can quickly see how your websites look when rendered using different versions of the Gecko render engine. You can specify the filenames or locations (URLs) to open in multiple installed versions of Mozilla Firefox. Also the versions to open can be chosen.

Filenames or URLs that include spaces must be enclosed in quotes ("). Multiple filenames or URLs may be used by separating them by spaces. This will result in multiple tabs being opened.

Entering for example

"C:\Directory\Local File.html" http://mozilla.com/ https://utilu.com/

in the input field will open the local file and the two URLs in three tabs in the installed versions of Mozilla Firefox which can be selected in the next step.

If you want to open the default page just enter "default" in the input field.