website converter use more wget threads

[leonstafford]

HTTrack or other multithreaded downloader would be useful, but less likely to be installed.

Possible workaround with wget: https://stackoverflow.com/a/7645245/1668057

wget -r -np -N [url] &
wget -r -np -N [url] &
wget -r -np -N [url] &
wget -r -np -N [url]

So, with -b and no-clobber, could be useful, but need to benchmark. seems they'd keep attempting the same URLs if starting point is the same or is there a list to crawl that they'd all share and grab from next "to crawl"?