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

# Sources

> Upload and manage documents in a workspace.

## Uploading documents

Inside a workspace, use the upload control in the chat composer to add
documents. You can drag and drop files or browse for them. Uploads accept
`.pdf`, `.docx`, `.md`, and `.txt` files, up to 10 MB per file. Each file shows
its own upload progress.

## Managing sources

The workspace lists its sources. Each source shows its title, type, ingest
status (pending, ready, or failed), and how many chunks it produced. You can
delete a source, with a confirmation step.

Sources belong to the workspace they were added to, so a workspace-scoped chat
draws only on that workspace's sources.

<Note>
  Once a source is ready, its content is classified and stored as memory with
  its provenance intact, so answers built on it can be cited. See
  [Provenance and grounding](/user-guide/provenance-and-grounding).
</Note>