> For the complete documentation index, see [llms.txt](https://bluurdoc.bluur.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bluurdoc.bluur.ai/en/getting-started/quick-start/key-features/irreversible-anonymization.md).

# Irreversible anonymization

Anonymization consists of permanently removing the indicated data from the resulting version of the document.

It is not merely a visual covering of the content or adding an editable element that can later be moved or removed. Data contained in anonymized areas are not available in the downloaded file and cannot be recovered by turning off the layer, selecting the text, or changing the document settings.

During anonymization, the system also removes elements that could reveal information not directly visible on the page, including document metadata and comments.

The anonymized document is created as a new file. The original document on the user's device is not modified or overwritten.

{% hint style="warning" %}
Anonymization **of the downloaded document is irreversible**. Before downloading the file, check all pages and make sure the correct data has been selected for hiding.
{% endhint %}

Until[ **archiving** ](/en/getting-started/quick-start/key-features/document-retention-and-deletion.md)the user can undo the saved changes in the system and return to [**the classification stage**](/en/functions/working-with-a-document/stages/ai-classification.md)**.** This does not apply to downloaded output files, in which anonymization remains permanent.

{% hint style="warning" %}
After the document is archived, it is not possible to return to editing its source version in the system. Before archiving, make sure you have the original file on your disk if it may be needed in the future.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://bluurdoc.bluur.ai/en/getting-started/quick-start/key-features/irreversible-anonymization.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.