Upload a jpg-file. (Other file-formats are also allowed — usually.) Choose the options, and push the button.
The image is used to build a Nonogram [Wikipedia; explanation; example puzzle with Alan Turing].
It takes some time ... especially when the file is large (so please do not use images larger than 100 kB;
larger than 500 kB is even forbidden), or if the chosen options happen to be "wrong".
Questions/remarks: w.a.kosters@liacs.leidenuniv.nl
Walter Kosters, September 30, 2015 — http://www.liacs.leidenuniv.nl/~kosterswa/nono/