> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://cockpit.help.localyzer.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# What file formats are accepted for proof?

Most common file formats are accepted.

### Accepted file formats
You can submit proof in formats such as:
* **Documents** (DOC, DOCX)
* **PDF**
* **Spreadsheets** (Excel)
* **Images** (JPEG, PNG)
These formats cover invoices, confirmations, screenshots, and other supporting materials.

### Important to know
* Multiple files can be uploaded in one submission
* All files must relate to the same campaign
* Files should be readable and clearly show the required information
* There is no restriction on mixing file types in one submission