---
title: "About JavaScript Personalize Edge SDK"
description: "Get started with the JavaScript Personalize Edge SDK to deliver real-time personalized content, track events, and set custom user attributes effortlessly."
url: "https://www.contentstack.com/docs/developers/sdks/personalize-edge-sdk/javascript/about-javascript-personalize-edge-sdk"
product: "Contentstack"
doc_type: "guide"
audience:
  - developers
  - admins
version: "current"
last_updated: "2026-07-27"
---

# About JavaScript Personalize Edge SDK

Contentstack Personalize is the first edge-optimized personalization platform seamlessly integrated with Contentstack’s Headless CMS.

The Personalize Edge SDK enables you to personalize content for your Contentstack-powered digital properties, including fetching user-specific variants, triggering events, setting attributes, and more. By leveraging user data, it delivers tailored content experiences based on predefined criteria, enhancing user engagement and conversion rates.

## Key Features

*   Fetch and manage personalized user experiences with the [manifest](/docs/personalize/glossary-key-features#user-manifest)
*   Automatically leverage preset attributes such as query parameters, device types and referrer
*   Trigger impressions and conversions, set custom attributes, and set custom user IDs.
*   Seamlessly retrieve CMS [variant aliases](/docs/personalize/glossary-key-features#variant-aliases) for a user’s active variants to fetch personalized content

## Next Steps

[Get Started with JavaScript Personalize Edge SDK](/docs/developers/sdks/personalize-edge-sdk/javascript/get-started-with-javascript-personalize-edge-sdk/)

## Related Resource

*   [Personalize Edge API](/docs/developers/apis/personalize-edge-api)