How to change the structure of permalinks so that the old links are not broken?

Question

WordPress

Now the structure is this: sitename.com/%id%
I want to change to another one, but so that old links can be opened. Is it possible?

Answer 1

Solution:
in .htaccess write RedirectMatch 301 ^/(\d+)$ sitename.com/?p= $1
regexp needs to be changed depending on your links. This particular one works for /%post_id%. For other formats, respectively - another.

Answer 2

There is a plugin that you set old and new permalinks and it will redirect from old links to new ones, like this one: wordpress.org/plugins/advanced-permalinks/

Answer 3

Well, write a simple script yourself that will generate redirects in htaccess
, nothing at all