Marketing

"_rdt_em" Cookie

Reddit · Reddit, Inc.

Description

This cookie is set by the Reddit Pixel to store event match information. It helps Reddit attribute website actions to advertising campaigns and optimize ad delivery.

Details

Cookie Name: _rdt_em
Category: Marketing
Service: Reddit
Vendor: Reddit, Inc.
Popularity: 0.1% of scanned websites
Data Source: Cookie is

Consent Requirement

This cookie is classified as marketing/advertising. It requires explicit user consent under virtually all privacy regulations including GDPR, CCPA, and ePrivacy.

Consent Requirements by Regulation

GDPR & ePrivacy (EU)

Explicit prior consent is required before setting _rdt_em. Advertising and tracking cookies are never covered by the strictly necessary exemption.

UK GDPR & PECR

Explicit consent is required before setting _rdt_em.

CCPA/CPRA (California)

Setting _rdt_em for cross-context behavioural advertising is treated as sharing personal information: provide a "Do Not Sell or Share" opt-out and honour the Global Privacy Control signal.

Managing _rdt_em with a Consent Banner

A consent management platform keeps _rdt_em blocked until the visitor opts in to the marketing category. Kukie.io's scanner detects it automatically, categorises it, and the banner's auto-blocking holds back the script that sets it until consent is given - visitors who decline never receive it.

Frequently Asked Questions

Does the _rdt_em cookie require consent?

Yes. _rdt_em is a marketing cookie and requires explicit prior consent under GDPR, PECR, and the ePrivacy rules, plus a sale/share opt-out under CCPA/CPRA.

Who sets the _rdt_em cookie?

_rdt_em is set by Reddit (vendor: Reddit, Inc.). It is categorised as marketing.

How common is the _rdt_em cookie?

_rdt_em appears on about 0.1% of the websites scanned by Kukie.io, based on real scan data.

How do I block or delete the _rdt_em cookie?

Visitors can delete _rdt_em at any time through their browser's cookie settings. Site owners can keep it blocked until consent with a consent management platform: Kukie.io's auto-blocking holds marketing cookies back until the visitor opts in.