@ref1: http://osxdaily.com/2013/05/18/save-web-page-pdf-ios/
@ref2: http://www.appzd.net/2013/06/ios-daily-trickhow-to-conver-a-web-page-to-pdf-to-read-it-later/

按照上面方法添加的书签,在处理含有中文网址的时候有问题。
于是我改成下面这样,然后就正常了:

- javascript:pdf_url=location.href;location.href='http://pdfmyurl.com?url='+escape(pdf_url)
+ javascript:pdf_url=location.href;location.href='http://pdfmyurl.com?url='+escape(encodeURI(pdf_url))