# File Formats and Compatibility Explanation

The files are provided in **COPC (Cloud Optimized Point Cloud)** format, an optimized extension of the **LAZ** format. This **compressed and structured** format allows for faster data access, especially for web dissemination use cases (such as [Jakartowns](https://docs.jakarto.com/guide-jakartowns/fr/jakartowns/raccourcis-clavier/general)), while remaining **compatible** with software that supports the LAZ format.

When a transformation is requested (change of horizontal/vertical CRS), the output is provided in **LAS** (uncompressed). If you explicitly choose the **LAS** format in the tool, the output will also be LAS. If you prefer **LAZ** and no transformation is needed, the tool delivers the **native COPC (.laz)**.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.jakarto.com/guide-data-downloader/en/frequently-asked-questions-faq/file-formats-and-compatibility-explanation.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.