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

# File Requirements

> File size, type, and validation rules for uploaded documents.

## Requirements

### File Size

Maximum allowed file size: **7 MB**

### Download Timeout

All files must be downloadable within **10 seconds**.

***

## Supported File Types

Depending on the API, supported formats include:

### Documents

* PDF
* DOCX
* DOC
* TXT

### Images

* JPG / JPEG
* PNG
* GIF

<Note>
  Always check the API-specific documentation to confirm supported formats.
</Note>

***

## Validation Process

When you submit a URL, Paywint performs these checks:

1. **Syntax & length validation**
2. **Security rule checks**
3. **DNS resolution**
4. **Public IP validation**
5. **File download test**
6. **Content type & size verification**

A URL is accepted only if all checks pass.