Extract the vimeo.com video URL - it will be something like https://player.vimeo.com/video/123456789 and go to that in your Browser.
Right click and choose View Source.
Select All and Copy.
Paste the HTML code in the textbox below.
Click "Grab Vimeo Videos"!
Startnet Download Vimeo Videos Tool
Paste Vimeo Page Source HTML here: