A YouTube thumbnail is a wide 16:9 image, and on Pinterest a wide image shows up small next to tall pins. This tool places the thumbnail inside a 1000 × 1500 pin, adds a large title above it and a "Watch the full video" button below, so it reads clearly in the feed and makes the next step obvious.
Paste a watch, youtu.be or Shorts link and the tool loads the public thumbnail image straight from YouTube's image server. Only that image is requested. If it does not load, for example because of a network filter, upload the thumbnail file instead. Your design is drawn in the browser and nothing is uploaded.
Why stack the thumbnail instead of cropping it
Cropping a 16:9 thumbnail to 2:3 keeps less than half of its width and usually cuts through faces and text. Stacking keeps the whole thumbnail, so viewers who know your channel still recognize it, and uses the remaining space for a title written for Pinterest search.
The blurred background is made from the thumbnail itself, so the pin matches its colors. The solid background is better for a consistent channel look across many pins: use your channel color and the same font every time.
Linking pins to videos
A pin can link straight to the YouTube video. Linking to a blog post with the video embedded instead keeps visitors on your own site, where you can show related posts or a newsletter form. Both are valid, so choose by your goal.
Make two or three pins per video with different titles to see which wording gets clicks. The title generator helps with ideas, and the pin variations generator helps plan versions.