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

# Files

> The project's file store: what you upload, what the platform generates, and what you can do with each.

**Files** holds everything attached to your project, split by whether you put it there or the platform did.

<Frame caption="The Files panel. Tabs split the list by origin; the badge on each row repeats it.">
  <img src="https://mintcdn.com/bluegenai/NDGsqiI6WIlzZ3zL/images/web-apps/files-panel.png?fit=max&auto=format&n=NDGsqiI6WIlzZ3zL&q=85&s=12594b2f7ceba51b02f8775a6ef1cf7d" alt="The Files panel showing tabs for All, User Uploaded and System Generated, a search field, an Upload Files button, a total count, type filter chips for Word, Excel, PowerPoint, PDF, Images and Others, and a file list with User and System badges." width="1440" height="813" data-path="images/web-apps/files-panel.png" />
</Frame>

## Two Kinds of File

| Tab                  | What it holds                                                                       | What you can do    |
| -------------------- | ----------------------------------------------------------------------------------- | ------------------ |
| **User Uploaded**    | Anything you added: reference documents, brand guides, screenshots, source archives | Download or delete |
| **System Generated** | Anything the platform produced, including the blueprint as `CAB.md`                 | Download only      |

**System files cannot be deleted from this panel.** They are outputs of something else, so removing them here would leave the thing that produced them out of step. Each row carries a badge repeating its category, so the distinction is visible in the combined **All** view too.

## Adding Files

**Upload Files** adds to the project. You can also attach files directly to a prompt with the paperclip in the composer, and those attachments land here too.

Uploads accept images and documents:

| Kind      | Accepted                                                                                |
| --------- | --------------------------------------------------------------------------------------- |
| Images    | `.png` `.jpg` `.jpeg` `.gif` `.webp` `.svg`                                             |
| Documents | `.pdf` `.doc` `.docx` `.ppt` `.pptx` `.txt` `.md` `.json` `.csv` `.xls` `.xlsx` `.html` |

Images are capped at 2 MB. Filenames are capped at 200 characters.

## Finding Things

Search by name, or narrow by type using the chips: **Word**, **Excel**, **PowerPoint**, **PDF**, **Images**, and **Others**. The list sorts by name, date modified, or type, and a count above it reports the total.

## Why This Panel Matters

**Files are how work moves between modes.** Build Mode does not inherit your Prototype conversation, so anything that should influence a build has to be attached to a prompt, and this is where you find it again. See [Output Handoff](/web-apps/prototype-mode/output-handoff).

It is also where generated documents accumulate. A blueprint written in the CAB workspace appears here as `CAB.md`, available to attach to a build prompt like any other file.

## Your Next Step

Files feed prompts. What the agent does with them is the next thing worth knowing.

<CardGroup cols={2}>
  <Card title="Attach files to a build" icon="code" href="/web-apps/build-mode/workflow">
    How context reaches the agent.
  </Card>

  <Card title="Carry prototype work forward" icon="arrow-right-arrow-left" href="/web-apps/prototype-mode/output-handoff">
    Saving output so it survives the switch to Build.
  </Card>
</CardGroup>


## Related topics

- [Troubleshooting & FAQ](/tips-and-tricks/troubleshooting-faq.md)
- [Legacy Code Translation Guide](/cab/legacy-code-translation-guide.md)
- [Weekly release notes](/changelog/weekly-release-notes.md)
- [Ask Mode](/web-apps/ask-mode.md)
- [Credentials](/web-apps/credentials.md)