> For the complete documentation index, see [llms.txt](https://helps.ptengine.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helps.ptengine.com/en/developer.md).

# Developer

- [About Extended APIs for Measurement](https://helps.ptengine.com/en/developer/extended-api.md)
- [Open API Documentation](https://helps.ptengine.com/en/developer/open-api.md)
- [User Attribute Upload API](https://helps.ptengine.com/en/developer/user-data-upload-api.md)
- [Dynamic Heatmap Features Explained](https://helps.ptengine.com/en/developer/dynamic-heatmap.md)
- [Implementation Principles of Page Editing Experience](https://helps.ptengine.com/en/developer/inline-edit-mechanism.md)