How to use kindle for research reading

There is a chrome extension Push to Kindle that can directly send html or pdf links to kindle
To send several html links together, we can use doocer, it will output mobi format and send it to kindle

To convert scanned pdf to mobi, use K2pdfopt, and follow the steps below on mac

download k2pdfopt
change permission chmod 755 k2pdfopt
control click K2pdfopt
drag the pdf to it and press enter twice
it will output a file_k2opt.pdf