The easiest tool for saving web pages is
Toolbar for Librie. Despite the major drawbacks of requiring IE and having a Japanese UI (be sure to read the
Little Guide on How to Use It, it's a one-click solution for html-to-lrf conversion. It's much more efficient than taking the intermediate step of printing to PDF.
The best tool for PDF conversions is
PDFrasterFarian, which converts PDFs to lrf, adjusting for the Reader's poor font rendering of rescaled Letter Size PDFs.