A crawl finishes and hands you eight hundred relative paths. The developer who has to action them needs full URLs, and pasting a spreadsheet of /category/thing into a ticket is a good way to have it bounced back.
The five-second version of a ten-minute job
Paste the paths, set the prefix to https://yoursite.com, and every line becomes clickable. The person receiving the ticket can now open any of them without reconstructing the address in their head.
Why this matters more than it sounds
Friction in a handoff is where fixes go to die. A list of relative paths asks the recipient to do work before they can start the actual work, and that reliably converts an urgent ticket into a stale one. A list of live links does not.
The same move in other places
Ad platforms wanting fully-qualified destination URLs, redirect maps needing absolute targets, outreach lists where every row needs the same UTM tail — all the same operation, applied at the other end.
Try it: Add Prefix on SeoWolf's Notepad.