Overview

The Universal Pixel is a combined pixel code snippet used by Nextdoor advertisers for both page views and conversions. It simplifies implementation compared to the legacy framework, which used separate base and conversion pixels. This new framework offers cleaner, unified data and simplified troubleshooting. Migrating to the Universal Pixel ensures access to upcoming Nextdoor features like advanced user matching and conversion optimization. Advertisers can install the Universal Pixel either directly/manually or through a tag management system like Google Tag Manager.

What does this documentation cover?

This guides Nextdoor advertisers in the transition to and implementation of the Nextdoor Universal Pixel standards. Once the universal pixel framework is implemented, you can use it to track website conversions, helping you understand the effectiveness of your Nextdoor ads, allowing you to fine-tune your advertising strategy for better results.

Why use the new universal pixel?

A comparison of the current / legacy pixel to the universal pixel:

Legacy pixel framework pre-Q2’25	New Universal Pixel framework post-Q2’25
Two separate pixels: base pixel and conversion pixel.	One combined pixel code snippet for page view and conversions.
More complex to implement	Easier, faster implementation
Fragmented data and tracking	Cleaner, unified data
Harder to troubleshoot	Simplified troubleshooting
Doesn’t scale well as campaigns grow	Scales across campaigns and sites
Not amenable to new features/updates	Scales with new features/updates

Using the universal pixel also ensures access to new and upcoming Nextdoor features, like:

Advanced user matching (with updated pixel agreements) and access to the event manager.
Conversion Optimization mode
Retargeting audiences
Lookalike audiences