Advertising vendor · Pinterest, Inc.
Pinterest Tag Cookies: List With Purpose and Retention
Last verified 2026-10-17 · Updated 2026-10-17
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Cookies the Pinterest Tag Sets on Your Site
Pinterest lists 9 cookies for the Pinterest Tag, led by _pin_unauth on your domain, and _pin_aem joins them when you turn on automatic enhanced match.
| Name | Type | Category | Party | Retention | What it does |
|---|---|---|---|---|---|
_derived_epik | Cookie | Advertising | First-party | 1 year (365 days) | The _derived_epik cookie records a match that the Pinterest Tag found without cookies. |
_epik | Cookie | Advertising | First-party | 1 year (365 days) | The _epik cookie is set when a visitor arrives from a Pinterest ad and helps the Pinterest Tag match the visit to the ad click. |
_pin_aem | Cookie | Advertising | First-party | 1 year (365 days) | The _pin_aem cookie stores hashed customer information from your form fields when you turn on automatic enhanced match, in certain regions. |
_pin_unauth | Cookie | Advertising | First-party | 1 year (365 days) | The _pin_unauth cookie is a Pinterest Tag advertising cookie that identifies an unmatched visitor for 1 year and needs consent under the ePrivacy Directive. |
_pinterest_ct | Cookie | Functionality | Third-party | 1 year (365 days) | The _pinterest_ct cookie works like a login cookie for the in-app browser of Pinterest. |
_pinterest_ct_rt | Cookie | Advertising | Third-party | 1 year (365 days) | The _pinterest_ct_rt cookie is set on pinterest.com when a visitor opens a site that runs the Pinterest Tag. |
_pinterest_ct_ua | Cookie | Advertising | Third-party | 1 year (365 days) | The _pinterest_ct_ua cookie is the third-party twin of the _pin_unauth cookie on the domain of Pinterest. |
_pinterest_sess | Cookie | Functionality | Third-party | 1 year (365 days) | The _pinterest_sess cookie is the Pinterest login cookie, which the Pinterest Tag reads on pinterest.com. |
_routing_id | Cookie | Functionality | Not documented | 1 year (365 days) | The _routing_id cookie directs the visitor to the latest version of Pinterest. |
Scripts, Pixels, and Endpoints the Pinterest Tag Loads
The Pinterest Tag loads 2 known scripts, pixels, and data endpoints. Each row gives the host to look for in the Network tab of Chrome DevTools or in a cookie scanner report.
| Type | Resource | Host | What it does |
|---|---|---|---|
| Script | Pinterest Tag (core.js) | s.pinimg.com | The Pinterest Tag loads from s.pinimg.com and writes the _pin_unauth cookie on your domain. |
| Data endpoint | Pinterest Tag event endpoint (ct.pinterest.com) | ct.pinterest.com | The event endpoint receives every page visit and conversion that the Pinterest Tag reports. |
Does the Pinterest Tag Need Consent?
Yes, the Pinterest Tag cookies need consent in the EU and the UK, and need no prior opt-in in California. The table gives the rule for each law, taken from the page of the _pin_unauth cookie.
| Law | Consent before the cookies are set | Opt-out right | Source |
|---|---|---|---|
| EU ePrivacy Directive + GDPR | Required | Withdraw at any time | Article 5(3), ePrivacy Directive |
| UK PECR | Required | Withdraw at any time | Regulation 6 and Schedule A1, PECR |
| California CCPA | No general opt-in | Opt out of sale and sharing | Cal. Civ. Code 1798.120 |
The consent table describes what each law requires and is not legal advice. Whether a law applies to your site depends on where your visitors are, where your business is based, and how you set up the Pinterest Tag, such as the fp_cookie option and enhanced match.
Read the reason for each answer in the consent rules for the _pin_unauth cookie.
How to Add the Pinterest Tag to a Consent Banner
Add the Pinterest Tag to a consent banner by holding back the Pinterest Tag base code until the visitor accepts advertising cookies. Both TermsFeed products block the Pinterest Tag in the Advertising category.
Add the Pinterest Tag to TermsFeed Free Cookie Consent
TermsFeed Free Cookie Consent runs a tagged script only after the visitor accepts its category. Change type="text/javascript" to type="text/plain" and add data-cookie-consent="targeting".
<script type="text/plain" data-cookie-consent="targeting">
!function(e){if(!window.pintrk){window.pintrk=function(){window.pintrk.queue.push(
Array.prototype.slice.call(arguments))};var
n=window.pintrk;n.queue=[],n.version="3.0";var
t=document.createElement("script");t.async=!0,t.src=e;var
r=document.getElementsByTagName("script")[0];r.parentNode.insertBefore(t,r)}}("https://s.pinimg.com/ct/core.js");
pintrk('load', 'YOUR_TAG_ID');
pintrk('page');
</script>
Cookie Consent is free and needs no account. Build your free consent banner with TermsFeed Free Cookie Consent.
Add the Pinterest Tag to TermsFeed Privacy Consent
Add the Pinterest Tag from its template in TermsFeed Privacy Consent and type your Tag ID, which Pinterest Ads Manager shows under Conversions and Pinterest Tag. The Pinterest Tag loads only after the visitor accepts the Pinterest vendor, without the <noscript> image and without enhanced match.
The Pinterest Tag template asks for the Tag ID and fills every other field of the vendor. Pick the "Pinterest Tag" card under Advertising, enter the Tag ID, and click "Add Pinterest Tag". Find the Tag ID in Pinterest Ads Manager under Conversions › Pinterest Tag. The illustration shows the template form in the TermsFeed app.
Privacy Consent detects the location of each visitor and records every answer in a consent log. Set up the Pinterest Tag from its template with TermsFeed Privacy Consent.
Follow every step, the vendor settings, and the check in Chrome DevTools in how to block the _pin_unauth cookie.
Who Runs the Pinterest Tag
Pinterest, Inc. runs Pinterest from the United States. Pinterest Europe Ltd. and Pinterest, Inc. are joint data controllers for users in the European Economic Area (EEA), the UK, and Switzerland. The Pinterest Ad Data Terms require advertisers to get the legally required consent for the cookies of the Pinterest Tag.
Read how Pinterest, Inc. handles the data in the Pinterest Tag privacy policy, and sign the Pinterest Ad Data Terms before you collect data from visitors in the EU or the UK. Both documents appear in the sources at the end of this page.
Pinterest Tag Cookie FAQs
Does the Pinterest Tag need consent?
Yes, the Pinterest Tag cookies need consent in the EU and the UK, and need no prior opt-in in California. Firstly, the ePrivacy Directive requires consent before a site sets the advertising cookies of the Pinterest Tag. Secondly, the UK PECR requires consent before a site sets the advertising cookies of the Pinterest Tag. Thirdly, the CCPA sets no general opt-in requirement for the advertising cookies of the Pinterest Tag, and the table gives the opt-out right of visitors. The consent section of this page gives the table for each law.
How long do the Pinterest Tag cookies last?
Each cookie of the Pinterest Tag in the current setup lasts 1 year (365 days). The retention column of the cookie list gives the lifetime of each cookie.
How do I block the Pinterest Tag cookies?
Block the the Pinterest Tag cookies by holding back the Pinterest Tag base code until the visitor accepts advertising cookies. Tag the Pinterest Tag base code with data-cookie-consent="targeting" in TermsFeed Free Cookie Consent, or add the Pinterest Tag as a vendor in TermsFeed Privacy Consent. The page of the _pin_unauth cookie gives the full steps and the settings of the Pinterest Tag.
Sources for the Pinterest Tag Cookies
The facts on this page come from the documentation Pinterest publishes, checked on 2026-10-17. The list gives every source, so you check each fact yourself.
- Pinterest Business Help, Pinterest Tag parameters and cookies
- Pinterest Business help, Add the base code to your website
- Pinterest Developers, Pinterest Tag
- Pinterest, Ad Data Terms
- TermsFeed check of the Pinterest Tag in Chrome, 17 October 2026 (internal)
- Pinterest Tag privacy policy
- Pinterest Ad Data Terms