This is what you want so that you can browse the site off-line. Most can allow you to choose the type of files to be downloaded. Some can generate a map of the web site. This is very useful when you want to work out how to download only a small part of a complex site. Speed Choosing text-only makes downloads much faster.
Image files are much bigger.
This is very useful with slow connections, and can speed up the downloads dramatically. Filtering Most can now handle sites requiring a password. Some programs can filter out pages being downloaded which contain specified keywords, and increasingly it will be possible to search the downloaded web sites. Many of the programs can also check to see if any changes have been made to the pages since they were last downloaded or checked. Scheduling Most of the programs will now allow you to schedule the download at a time when the Internet is less congested.