File Upload - Allow Accept

We all know how to use a File upload field, right?  the filler simply needs to click on the file upload and a browse window opens, and displays his personal computer files, to choose from. It usually displays all of his file types, however you can narrow it down and filter out the files that are not relevant.
This is exactly what the file upload 'Allow accept' property does - it adds a filter to the brows window and displays accepted file types according to your request. For example: If you wish for your form filler to upload an image (a GIF, PNG or JPG), there would be no point in displaying irrelevant file types like Doc, CSV, PDF, HTML etc. 

Following are steps to use the 'Allow Accept' option?
1- Select the file upload element on canvas
2- Go to ‘Properties’ panel > ‘Element’ tab > ‘Advanced’  category
    Turn on the “Allow accept” checkbox
3- Specify the file types you wish the filler to see.
Make sure to start each file type with a dot and separated multiple file types with a comma - like so:
.jpg,.png


4- Save your form and test it
- Publish your form as URL
- Click on the file upload field
- The browse window will then open- you will see that it displays either JPG or PNG file types.