Reddit Pixel - Ad Conversion Tracking Privacy

Overview

The Reddit Pixel is Reddit's browser-side conversion tracking tag, serving as the primary measurement mechanism for Reddit's advertising platform. Advertisers embed the pixel on their websites to track specific conversion events — page views, content views, purchases, lead submissions — and attribute them to Reddit ad campaigns. The pixel data feeds Reddit's ad delivery optimization, enabling the platform to identify which ad placements and targeting parameters drive the most conversions.

What This Script Does

The Reddit Pixel loads from Reddit's advertising domain and tracks visitor behavior for conversion attribution.

Script loaded: alb.reddit.com/snoo.js — Reddit's conversion tracking pixel that initializes event tracking on the advertiser's website
Page tracking: The pixel fires a tracking beacon on each page load, reporting the page URL, referrer, and visitor identifiers to Reddit's advertising servers
Cookies set:
- _rdt_uuid — First-party cookie (90-day expiry). Persistent visitor identifier for cross-session conversion attribution and audience building.
Event tracking: Advertisers configure the pixel to report standard events (PageVisit, ViewContent, Search, AddToCart, Purchase, Lead, SignUp) and custom events with parameters (value, currency, item count). Each event fire transmits event data and visitor identifiers to Reddit.
Retargeting audiences: The pixel's visitor identifiers build custom audience lists on Reddit — enabling advertisers to target Reddit ads at people who visited specific pages or completed specific actions on their website.
Data collected: Page URLs, conversion event details, visitor identifiers, browser information, and IP address for geolocation and attribution.

Consent & Compliance

The Reddit Pixel falls under the marketing consent category.

Under GDPR and ePrivacy, the Reddit Pixel requires explicit opt-in consent. The _rdt_uuid cookie is a persistent first-party identifier set for advertising attribution, constituting non-essential cookie storage under the ePrivacy Directive. Conversion data and visitor identifiers transmitted to Reddit constitute personal data processing for advertising under GDPR.

Under CCPA/CPRA, the pixel's transmission of visitor identifiers and behavioral data to Reddit for advertising optimization constitutes "sharing" of personal information for cross-context behavioral advertising.

Should You Block This Without Consent?

Yes. The Reddit Pixel sets persistent tracking cookies, reports page-level behavioral data to Reddit's advertising platform, and builds retargeting audiences from website visitors. Block the pixel entirely until the user grants marketing consent.

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Consent Categories

Marketing

Also Known As

reddit pixelreddit conversion trackingreddit pixel cookiesreddit ad attributionreddit retargeting pixelreddit ads consent

Industries

Programming and Developer SoftwareComputers Electronics and Technology

Tracked Domains (1)

pixel.reddit.comMarketing

Frequently Asked Questions

Does the Reddit Pixel require consent?

Yes. It sets a persistent _rdt_uuid cookie and reports page-level data to Reddit's advertising platform. Under GDPR and ePrivacy it requires explicit marketing consent before loading. Under CCPA it constitutes sharing for cross-context behavioral advertising.

What cookies does the Reddit Pixel set?

It sets _rdt_uuid, a first-party cookie with a 90-day expiry, as a persistent visitor identifier used for conversion attribution and audience building across sessions and page visits on the advertiser's website.

How does ConsentStack handle the Reddit Pixel?

ConsentStack blocks the Reddit Pixel until marketing consent is granted. Once a visitor consents, the pixel loads and begins tracking. If consent is withdrawn, ConsentStack suppresses the script on subsequent visits to stop attribution and audience data collection.