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

# Manual Upload

> Upload files to Atomscale through the web interface

Manual upload lets you drag and drop files directly into Atomscale from your browser.

## How to Upload

<Steps>
  <Step title="Open the Add Data dialog">
    Click <Badge stroke color="blue">Add Data</Badge> in the sidebar. The <Badge stroke color="blue">Upload</Badge> tab is selected by default.
  </Step>

  <Step title="Add files">
    Drag and drop files into the dashed upload area, or click <Badge stroke color="blue">Browse your Computer</Badge> to open a
    file picker. You can add multiple files at once.
  </Step>

  <Step title="Choose a data stream">
    Each file shows a **data stream** selector. Atomscale auto-detects the stream type when
    possible; you can also select one manually.
  </Step>

  <Step title="Associate with a physical sample (optional)">
    Use the <Badge stroke color="blue">Add to Physical Sample</Badge> dropdown below the file list to link the uploaded data to an
    existing sample, or create a new one.
  </Step>

  <Step title="Upload">
    Click <Badge stroke color="blue">Upload Files</Badge>. A progress indicator shows the upload percentage. The dialog closes
    automatically once the upload completes.
  </Step>
</Steps>

## What Happens After Upload

Uploaded data appears in the [Data catalog](/platform/reference/models/data-items).