_pinterest_ct_rt is set whenever the person visits an advertiser’s site which has the Pinterest tag installed.This cookie is set in the person’s in-app browser whenever the person views offsite content, such as a third-party website, from within the Pinterest app. _pinterest_ct is the equivalent of the _pinterest_sess for our in-app browser.This cookie contains the person’s Pinterest ID as well as the person’s authentication tokens if the person is logged into Pinterest. It’s updated whenever a person logs into or out of Pinterest. _pinterest_sess is the Pinterest login cookie and is used to store a person’s login state within a web browser._routing_id is a first party cookie that helps ensure that our website users are being directed to the latest version of. _pinterest_ct_ua is identical to _pin_unauth, but as a third party cookie. _pin_unauth is a first party cookie which groups actions for users who cannot be identified by Pinterest. _derived_epik is placed by the Pinterest tag when a match is identified when no cookies are present, such as enhanced match. _epik is placed by the JavaScript tag based on information sent from Pinterest with promoted traffic to help identify the user. They contain a user ID and the timestamp at which the cookie was created. _pinterest_ct and _pinterest_ct_rt are identical.

We use the logged out user ID(s) to optimize the person’s experience and measurement. If the person is logged out, authentication tokens are deleted but we leave the cookie present. It contains user ID(s), authentication token(s) and timestamps. _pinterest_sess is the Pinterest login cookie. The Pinterest tag reads the following cookies:

cb: Cache buster, which is the current timestamp.

if: (boolean) whether the tag fired from within an iframe.

This is only for event tags such as PageVisit, AddToCart, Checkout, etc. It should match your unique Pinterest tag ID in Ads Manager. We recommend checking the following query string parameters for the Pinterest tag:

Scroll down to the Headers tab and find Query string parameters.

Click the Network tab, then filter for ‘ct.pinterest’.

Open the developer tools in Chrome or Safari, depending on which browser you’re using.

You can view these parameters to verify whether your tag is working correctly. View query string parameters in a browser

Pinterest cookies