Check attachment file type
Introduction
Attachment Checker allows restricting attachments by file type.
This helper allows Confluence admins to upload files to detect their types, which helps in:
- Configuring the list of file extensions 
- Troubleshooting when files are blocked from upload 

| Detected Extension | Detected MIME Type | Description | 
|---|---|---|
| 
 | 
 | This file can be uploaded. | 
| 
 | 
 | This file cannot be uploaded. | 
| 
 | 
 | |
| 
 | 
 | 
Errors

You can increase Confluence upload size limit at ⚙️ → General Configuration → Attachment Settings → Attachment Maximum Size.
How to access File Type Helper
The page can be accessed from Attachment Checker Configuration → File Type Blocking tab 
→ File Type Helper.

 
                                    
