I created this tool because I was tired of manually putting together thumbnails for my Speed Dials. I've been an avid user of Vivaldi browser for a long time. I love the complete customisability it provides. It provides a great new tab experience called Speed Dials, but the thumbnails it generates are based on a screenshot of the page which doesn't provide a lot of information. That's why I created VTG, it creates thumbnails that are readable at a glance, and fully customisable so they will always match your theme.
It's created using React (CRA) and Styled-Components. All image processing is done on the client-side, using the Canvas API.