For Google Analytics always fill in source, medium and campaign. Term, content and id are optional.
They are kept; only the utm_* ones are added or replaced. If you leave a field empty, that utm_ is removed from the URL.
Yes, the UTM link builder tool is 100% free, unlimited and requires no sign up or installation.
No. Every operation on Toolkoa is processed privately and locally, directly in your own browser.
Nothing to install. UTM link builder runs in any modern desktop or mobile browser, and once the page has loaded you can keep using it without relying on the connection.
