> For the complete documentation index, see [llms.txt](https://docs.knowbase.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.knowbase.ai/chat/attachments-and-context.md).

# Attachments & Context

## Dropping files into chat

In **Chat All** mode, you can drop files directly into the chat input. This narrows the search to only those files — useful when you want answers from specific documents without searching your entire library.

Files appear as chips above the input. Remove a chip to stop searching that file.

## Context label

The label above the chat input always tells you what's being searched:

* **"Chatting with all"** — searching your entire library
* **"2 dropped files only"** — searching only the files you dropped
* **"2 files + Library"** — dropped files plus your library

## YouTube in chat

Paste a YouTube URL directly into the chat. Knowbase extracts the transcript on the fly so you can ask questions about the video without uploading it to your library first.

## Library toggle

Use the **library icon** in the input bar to include or exclude your uploaded library from the search. This is useful when you only want to search dropped files or connected tools.