Pinterest's click identifier, appended to outbound clicks so the destination site's Pinterest Tag can report your actions back, matched to your Pinterest session.
Pinterest appends epik (enhanced match, Pinterest Click ID) to clicks leaving its apps and site, mostly on promoted pins. The destination's Pinterest Tag reads the token, stores it in a first-party _epik cookie, and attaches it to checkout and signup events it reports back to Pinterest.
Like every click identifier on this list, it survives wherever the URL goes, so a pinned product link pasted to a friend still carries the token pointing back at your click.
Is it safe to remove?
Yes. Attribution-only; the destination page renders identically without it.
Remove epik automatically
Rather's Link Shortener strips epik and hundreds of parameters like it, right in the
address bar and in everything you copy or share. Free, open source, no account,
no data collection, and the page you are on never breaks: the cleanup happens
after the site has already loaded.
Pinterest's click identifier, appended to outbound clicks so the destination site's Pinterest Tag can report your actions back, matched to your Pinterest session.
Is it safe to remove epik from a URL?
Yes. It is an attribution-only token and pages render identically without it.
How do I remove epik automatically?
The free, open-source browser extension Rather's Link Shortener removes epik automatically in the address bar, in copied links, and in shared links, on Chrome and Firefox. You can also simply delete the parameter by hand: everything from epik= up to the next & or the end of the URL.