Hi, WKHTML2PDF was broken in recent Pharo version as my original version of the project was based on NativeBoost and we now meanwhile switched to UFFI with Pharo to provide a unified foreign function interface. Long story short: I now found the time to update the project to use UFFI and make it work again. You can load it from Catalog in Pharo 5/6. So if you like to convert HTML or URLs to a PDF use HTML2PDFConverter convert: 'http://www.pharo.org' toFile: 'pharo.pdf' then check it out. Note that I only had the need to make it work on Windows. If someone adopts to Linux/Mac tell me and we include the contribution. Project is on STHub as before: http://smalltalkhub.com/#!/~TorstenBergmann/WKHTML2PDF Thanks T.