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

# What gets indexed

> Understand how files and web pages become searchable Sources and what to expect after you add or change them.

Indexing prepares the content of a Source so Athena can find relevant passages when you work in the matching Project or workspace context.

## What Athena processes

Athena processes the content of supported Source files and web pages, including:

* Text and Markdown files
* Word documents and PDFs
* CSV and Excel spreadsheets
* JPG, JPEG, and PNG images
* Web pages added by URL

The Source itself remains listed in the Sources area while its content is being prepared. A Source appearing in the list does not necessarily mean it is ready to use in a response.

## When indexing happens

Indexing happens after you add or change Sources. It can also occur after content created by another Athena workflow is added to a Project's Sources.

For a newly added Source:

1. Add the file or URL to the correct Source location.
2. Athena prepares the content for search.
3. The Source becomes available to Athena in its permitted context.

Allow a short delay after adding or updating a Source before asking Athena about it. If Athena cannot find the material immediately, check that you added it to the intended scope and try again later.

## Web pages may fail to import

Adding a URL does not guarantee that Athena can read the page. Some pages require a login, block automated access, or do not expose readable content.

If a URL Source shows an error:

* Confirm that the address is correct.
* Use a specific page rather than a general site address when possible.
* Try adding the URL again.
* Upload a document instead if you have a copy of the material.

## What indexing does not change

Indexing does not change a Source's scope or permissions. A Personal Source remains personal, a Project Source remains associated with its Project, and a Workspace Source remains available within the workspace.

To control who can use a Source, choose the right scope before adding it. See [Personal, Project, and Workspace Sources](/sources/source-scopes).