Restrict File Upload by File Type in Oracle Apex

If you want to restrict file upload by file type/extension/format you can follow the below steps.  Goto File Browser Item --> Advanced --> Custom Attributes  Then pest below code : accept=".pdf,.csv,.xlsx" Here it means only pdf , csv and xlsx file will be acceptable for upload.  If you want to accept only pdf then you have to put like below code as the screenshot given: accept=".pdf"   Double-click on the image to view it on a big screen. That's it. Now you can go and check.