There are hundreds of different monogram designs available on this website. To find one that you love you can search by font, the number of initials, design or frame. You can create your monogram within two minutes. There is no need to install fonts, software or to register.
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".