Try Bobtail
This is an early preview of the Bobtail engine. Give it an image and it decomposes it into vector structure: lines that follow the hills and valleys in its brightness. The result is drawn over your image, so you can see what the engine found.
Any image your browser can open. Larger images are scaled down to fit 128×128 pixels before they are sent.
The preview works on small images for now. Analysis time grows quickly with image size and the engine has not had its performance work yet, so larger images are scaled down first. An analysis usually takes 10 to 20 seconds. If the engine has been idle for a while it has to start up first, and then it can take up to a minute.
Your image is sent to the engine, analysed and discarded. It is not stored. The analysis runs in the EU (Azure West Europe).