If you want to make the redirects, it wouldn't be170 lines in .htaccess, you use one directive for all URLs ending in .html
The link @universal4 provided explains how.
Another option to consider.
I've seen some websites using WordPress and page URLs ending in .php or .html
Perhaps, you can do the same and avoid redirects.
If you're using posts for those static pages, you need to use /%postname%.html/ in permalinks and that should do it.
If you decide to do so, just do a little tests with category, page URLs.

Originally Posted by
CasinoDefence
Hi
I have acquired some affiliate sites recently and a couple are in desperate need of a makeover but have a question about redirecting the old pages to new ones.
So as an example... the current site uses static html pages (.html) where as the new design site which uses WordPress has the standard /pagename/
So would I set up a 301 permanent redirect on all 170 pages via a .htaccess file?
h--p://www.testdomain.co.uk/32red.html >>> h--p://www.testdomain.co.uk/32red/
h--p://www.testdomain.co.uk/coral.html >>> h--p://www.testdomain.co.uk/coral/
170 redirects would take a lot of time so was wondering if there was a easier way? The site has good Google SERPS so would be shame to lose any of the existing
SEO juice!
affkraft.com → WordPress Themes & Plugins for Sports, Casino and Forex Affiliates
tablrr.app → Centralized Listing Management and Automated Sync for Affiliate Marketers