> This page is for version v2026-02-09 (default).
> For other versions, use one of these documentation indexes:
> - v2026-02-09 (default): https://docs.extend.ai/2026-02-09/llms.txt
> - v2025-04-21: https://docs.extend.ai/2025-04-21/llms.txt
> - v2024-12-23: https://docs.extend.ai/2024-12-23/llms.txt

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.extend.ai/llms.txt
> Use this file to discover all available pages before exploring further.
>
> ## API version
> The current API version is `2026-02-09`, served at the site root (no version prefix in URLs).
> If this page URL contains `/2025-04-21/` or `/2024-12-23/`, you are reading an older API version.
> Prefer the current docs at https://docs.extend.ai/llms.txt unless the user explicitly needs that older version.
> Do not treat older-version pages as the source of truth for new integrations.

# Supported File Types

> File types Extend supports for parsing, extraction, classification, and splitting — including PDF, images, and Office documents — with size and page limits.

We support the following file types:

| Document Type        | Supported Extensions                                                                                |
| -------------------- | --------------------------------------------------------------------------------------------------- |
| PDF                  | `.pdf`                                                                                              |
| Images               | `.png`, `.jpg`, `.jpeg`, `.tiff`, `.tif`, `.svg`, `.heic`, `.heif`, `.bmp`, `.gif`, `.webp`, `.psd` |
| Microsoft Excel      | `.xls`, `.xlsx`, `.xltm`, `.xltx`, `.ods`                                                           |
| Microsoft Word       | `.docx`, `.doc`, `.wpd`, `.dotx`, `.odt`                                                            |
| Microsoft Powerpoint | `.pptx`, `.ppt`, `.ppm`                                                                             |
| CSV files            | `.csv`                                                                                              |
| Text files           | `.txt`, `.html`, `.xml`, `.rtf`, `.lis`, `.md`                                                      |
| Email files          | `.eml`                                                                                              |
| Other formats        | `.pcx`                                                                                              |

If you need to support a file type that is not listed here, please reach out to the Extend team.

> **Note**
>
> Password-protected PDFs are supported. See [Password-Protected Files](/password-protected-files) for how to provide the password in your request.