# Files and Knowledge

> Files is your file library in TulipFarm. Knowledge is the source material that your chats and agents can search and cite.

Source: https://docs.tulipfarm.ai/concepts/files-and-knowledge/

Files is TulipFarm's file library. Knowledge is the source material that your chats and agents can search and cite in their answers.

## Files

You open your library from **Files** in the sidebar. It has four sections:

| Section | What it is |
| --- | --- |
| **My files** | Files you upload. They are private to you until you share them. |
| **Shared with me** | Files other people share with you. |
| **Google Drive** | Your Google Drive files, when Google Drive is connected. |
| **Trash** | Files you delete. They stay here until you empty the Trash. |

Each file can be up to 10 megabytes (MB). Your workspace has a storage limit. Files in Trash still use storage.

When you open a file, you can choose one of these actions:

- **Use in chat**
- **Add to Knowledge**
- **Add to project**
- **Copy link**

### Google Drive files

Google files stay in Google. When you select **Save a copy**, TulipFarm makes a separate copy in your library. Google Sheets are read-only in TulipFarm.

> **Note:** If Google Drive does not connect, see [Google connection problems](https://docs.tulipfarm.ai/troubleshooting/google-connection-problems/).

## Knowledge

Knowledge is source material that chats and agents can search. When an answer uses a source, it shows a citation that you can open.

There is no separate Knowledge page. You add to your Knowledge from **Files**, and you use it through chats and agents.

To add a file, open it and select **Add to Knowledge**. You cannot add a folder.

Files that you add to your Knowledge are private to you. Your chats and agents can search them. Other people cannot.

TulipFarm checks your access each time you open a citation. If the source changed, was removed, or your access ended, the citation tells you.

A scanned Portable Document Format (PDF) file without text stays in Knowledge, but nobody can search it.

## Project files

Files that you add to a [project](https://docs.tulipfarm.ai/concepts/chats-and-projects/) are visible to everyone in that project. A project can pin a file so that every answer in the project includes it.

## Related

- [Manage files](https://docs.tulipfarm.ai/guides/manage-files/)
- [Chats and projects](https://docs.tulipfarm.ai/concepts/chats-and-projects/)
- [Google](https://docs.tulipfarm.ai/integrations/google/)
- [Upload problems](https://docs.tulipfarm.ai/troubleshooting/upload-problems/)