wget is useful when you need to download files from a web directory or mirror a simple documentation page for offline use.
Example
This command recursively downloads the linked page and the files needed to view it locally:
wget -H -r --level=1 -k -p https://tldp.org/HOWTO/Serial-Programming-HOWTO/
Options used
-ror--recursive: enable recursive download.--level=1: limit recursion depth to one level.-kor--convert-links: convert links so downloaded HTML points to local files.-por--page-requisites: download images, CSS and other files needed to display the page.
Be careful with recursive downloads on large sites. Start with a low recursion level and check what will be downloaded before increasing the depth.