> For the complete documentation index, see [llms.txt](https://docs.chord.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chord.co/activate/event-streaming/destinations/advertising/reddit.md).

# Reddit

Reddit Ads measures conversions from your Reddit campaigns. Chord sends your events to Reddit from the browser and from the server. Use both for the best coverage.

## What each version does

* [**Reddit Pixel**](/activate/event-streaming/destinations/advertising/reddit/reddit-pixel.md) runs in the shopper's browser. It catches on-page behavior and captures Reddit click IDs.
* [**Reddit Conversions API**](/activate/event-streaming/destinations/advertising/reddit/reddit-conversions-api.md) runs on Chord's servers. It still reports conversions when a shopper has an ad blocker or closes the tab early.

## Why use both

The browser version sees what shoppers do on the page. The server version survives ad blockers and closed tabs. Together they give Reddit more complete data.

## How they deduplicate

Configure both destinations with the same Pixel ID. Chord sends each event's unique message ID as the deduplication key on both, and Reddit deduplicates on that key and the event name.

Deduplication by event ID only works when both copies come from the same Chord event. The storefront and a server-side source, such as the Shopify order webhook, send separate Chord events with different message IDs, so those copies do not share an event ID.

The same applies if you send events to Reddit from anywhere else as well, such as your own pixel, another tool or a platform app. To deduplicate against Chord's events, you must send the **same conversion ID** for the same underlying action. If you cannot, expect Reddit to count those conversions twice.

## Set up

* [Reddit Pixel](/activate/event-streaming/destinations/advertising/reddit/reddit-pixel.md)
* [Reddit Conversions API](/activate/event-streaming/destinations/advertising/reddit/reddit-conversions-api.md)


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