What are these numbers and codes that are added to each my Wikipedia link when I click it in Gmail:

enter image description here

Who is responsible (who is tracking me -- Gmail or Wiki)? How to prevent it?

1 Answer 1


source/ust/usg are Gmail's tracking parameters which are applied to every outgoing link. If you inspect the email, you'll see the <a> tag has a data-saferedirecturl property containing this link. There are various tools to remove it, e.g. the URL tracking stripper Chrome extension.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.