---
title: "Experience Extensions Limitations"
description: "Experience Extensions Limitations"
url: "https://www.contentstack.com/docs/developers/experience-extensions-overview/experience-extensions-limitations"
product: "Contentstack"
doc_type: "guide"
audience:
  - developers
  - admins
version: "current"
last_updated: "2026-07-20"
---

# Experience Extensions Limitations

**Note:** Experience Extensions use the legacy approach with extensions. We recommend using the [UI locations](/docs/developers/developer-hub/about-ui-locations/) for the Contentstack App Framework to extend the functionality of your apps.

*   The maximum number of extensions allowed per stack is **50**
*   The maximum character length of the title is **256**
*   The maximum file size of extension’s source code is **500 KB**
*   The maximum file size of config parameters is **10 KB**