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

# Uploading & Understanding Documents

> Learn how Apers' powerful unstructured data ingestion engine processes your files

Apers has a powerful unstructured data ingestion engine built specifically for real estate documents, including scanned files, unstructured PDFs, and CSV spreadsheets.

## How to Upload Files

Uploading files to Apers is simple:

1. Navigate to the uploading section of the system
2. Drag and drop your files directly into the upload area
3. Apers will automatically begin processing your files

<Tip>
  You can upload multiple files at once. Apers will process each file individually and display its status.
</Tip>

You can also send documents to Apers by email, without opening the app. See [Email to Apers](/email-to-apers).

## Supported File Formats

Apers can process a wide range of file types common in real estate:

| Category          | Formats                         |
| ----------------- | ------------------------------- |
| **Documents**     | PDF, DOCX, TXT, RTF, Markdown   |
| **Spreadsheets**  | Excel (.xlsx), CSV              |
| **Presentations** | PowerPoint (.pptx)              |
| **Images**        | JPG, PNG, GIF, WebP, HEIC, TIFF |
| **Data Files**    | JSON, XML, YAML, HTML           |
| **Other**         | SQL, LOG files                  |

<Tip>
  Scanned PDFs are fully supported. Apers uses OCR to extract text from scanned documents automatically.
</Tip>

<Note>
  Each file can be up to 30 MB, and images up to 5 MB each. Legacy and macro-enabled Office files such as `.xls`, `.xlsm`, `.doc`, and `.ppt` are converted to their modern equivalent (`.xlsx`, `.docx`, `.pptx`) on upload; macros and VBA are not preserved.
</Note>

## File Processing Statuses

Once uploaded, Apers processes your files through several stages. You can track progress by viewing the status of each file:

<ResponseField name="Uploaded" type="status">
  The file has been uploaded to Apers but has not been processed.

  This typically occurs when a new file is created by Apers directly. AI-generated files are not automatically incorporated into processing unless you specifically click **Summarize** from the triple-dot icon (⋮).
</ResponseField>

<ResponseField name="Preparing" type="status">
  The system is analyzing the file to understand what it is and determining its data type.
</ResponseField>

<ResponseField name="Parsing" type="status">
  Apers performs OCR (Optical Character Recognition), especially for scanned documents, to understand the structure and extract key information.
</ResponseField>

<ResponseField name="Distilling" type="status">
  Apers uses its AI capability to quickly read and understand the entire document.
</ResponseField>

<ResponseField name="Failed" type="status">
  The system failed to process the file.

  This can happen when the file type is not supported or if one of the processing steps failed. Click **Summarize** from the triple-dot icon (⋮) to restart the process.
</ResponseField>

<ResponseField name="Ready" type="status">
  The file is fully processed. Apers understands the document, has compressed it, and completed OCR.
</ResponseField>