Copying Cookies Through Browsers
Gmail’s cookies can be copied straight through your browser, using a variety of methods. Although some of these methods will not all let you select your specific Gmail cookie, it will help you make your move a bit easier. Here is how:
Internet Explorer is the only browser with built-in cookie import and export functionality. You have to be aware, however, that this feature is not picky and will copy all of your cookies at once. The necessary steps are as follows:
Open File and select the Import/Export feature.
Select Export to File and click Next.
Select ‘Cookies’ and click Next.
Select the location to save the file and select Export.
Google Chrome has no built-in cookie exporter but the 'Cookie.txt Exporter' extension will get you there. It can export the specific cookies of the website you are browsing which will let you copy your Gmail login details from one Chrome browser to the other.
Firefox can also not by default export cookies and will need the 'Expert Cookies' add-on to let you do so.
Opera has no way of exporting cookies.
Although no native cookie exporter exists for Safari the 'Safari Cookies utility' will get the job done. It integrates into the browser’s settings menu and will let you export and import you Gmail login details.
Both Firefox and Safari will generate a generic .txt cookie file that need to be imported with an application called ‘wget’. Although this might seem as a hassle at first, it is the only method of copying specific Gmail login cookies from one computer to another.