The requested URL /doc2pdf/url2pdf.html was not found on this server.
Would be really cool if you fixed.
The bookmark script contains the following code:
javascript:void(window.open('https://doc2pdf.pdf24.org/doc2pdf/url2pdf.html?docUrl='+escape(window.location.href), '_blank', 'width=350,height=100,left=0,top=0'));