> ## Documentation Index
> Fetch the complete documentation index at: https://chat4data.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Extraction

> Learn how Chat4Data's 4-step extraction flow works — target area, fields, data volume, and final check. Add or remove fields in plain English, then export to CSV or Excel.

## How do I control what data is extracted?

Chat4Data uses a **4-step confirmation flow** so you stay in control at every stage:

<Steps>
  <Step title="Target Area">
    Chat4Data identifies the main content region on the page. You can redirect it: *"Focus on the product grid, not the featured section."*
  </Step>

  <Step title="Fields">
    The AI proposes fields to extract (e.g., name, price, rating). Add or remove any: *"Also grab the seller name"* or *"Skip the description."*
  </Step>

  <Step title="Data Volume">
    Confirm how many records you want — a page's worth, a specific number, or everything available.
  </Step>

  <Step title="Final Check">
    Review a sample before the full run starts. If something's off, just say so in plain English.
  </Step>
</Steps>

***

## How do I modify fields mid-extraction?

Just type your change in natural language at any point:

| Goal             | Example prompt                              |
| ---------------- | ------------------------------------------- |
| Add a field      | `"Also grab the price and ratings"`         |
| Remove a field   | `"Skip the description field"`              |
| Re-run analysis  | `"Re-analyze this page"`                    |
| Fix missing data | `"That missed some products"`               |
| Adjust scope     | `"Include more products from this section"` |

***

## Can Chat4Data filter out ads and navigation?

Yes — the AI automatically focuses on meaningful content and ignores sidebars, navigation bars, and ad blocks. You can also give explicit instructions like:

* `"Ignore the sidebar"`
* `"Only get data from the main listings area"`

***

## What export formats are supported?

| Format        | Notes                                                |
| ------------- | ---------------------------------------------------- |
| CSV           | Compatible with Excel, Google Sheets, and most tools |
| Excel (.xlsx) | Ready for direct spreadsheet use                     |

<Tip>
  Download your results immediately after each session — persistent chat history and session saving are coming in 2025.
</Tip>