There are two main reasons people use CHM to PDF. The first reason is that it can be used as a quick and easy way to convert CHM files into PDF documents. Simply go to the CHM to PDF converter, open the CHM file, and click on "Convert". The converter will then automatically convert the CHM file into a PDF document. This is a fairly easy and simple method for converting CHM files into PDF documents. However, there are some limitations to this method. One limitation is that you cannot change any of the content in the converted PDF file. For example, if you wanted to add an image or change the font size, you would have to do this after the conversion process. Another limitation is that it may take a while for the converter program to finish converting your file. It could take several minutes or even hours depending on how big your file is.