It’s read by your browser (check if you’re using the latest version) to pull out information. They track things such as remembering what’s in a shopping cart or login details, it will make browsing more convenient for us.
In the past, Cookies are stored in a plain text file created by websites you have visited and saved on your hard disk and that file may contain thousands of cookies from different URLs that you may have visited.
Today, it’s usually a single file that contains all of your cookies but if you open it up with notepad, you can not see what is actually inside it.
It includes some sort of PII (personally identifiable information), which is the data you have already provided such as address, names and postcodes, which in turn will auto-fill that information for you next time you revisit the same website. another example will be login details (username and password).
Cookies are found inside the Network folder.
To see all cookies and site data in you browser such as Chrome.
You can also Clear cookies and site data when closing the browser.