Example: Searching for PNG Images Click the advanced search options button () in the search bar. Click the Additional Conditions button. Result:The Additional Conditions dialog is opened. Go to the Files tab, check the Contains files check box, and select Yes from the adjacent drop-down menu. Check the File name check box and select matches wildcard pattern from the adjacent drop-down menu. Enter *.png in the text field next to the drop-down menu. Click OK to close the Additional Conditions dialog. Enter a search term in the search field or leave it empty if you do not want to filter your search further. Press Enter or click the search button. The search results show the PNG images found for your search term or all the PNG images in the vault if you omitted the search term.