Redirects are how you keep old URLs alive. Chains are how those good intentions accumulate: a CDN rule, a WordPress slash setting, a leftover www canonical, a HTTP→HTTPS at the host. None of them is wrong alone. Together they make every first visit slower than it needs to be.
Why it matters
Each hop is another DNS/TLS/request cycle for someone, and a diluted signal for search engines. Google can follow chains; it would rather not. Users on a phone in a train carriage feel it first.
How they appear
http://→https://→https://www.→ trailing slash.- Old domain → new domain → www version of the new domain.
- HTTP 301 to a URL that 301s again because a plugin “fixes” permalinks.
The fix
Pick one canonical host (with or without www), HTTPS only, one slash rule. Point every other variant at that URL in a single hop — at the CDN or server, not in a plugin that runs after another plugin already redirected.
The redirect checker counts hops on the URL you paste. If you see more than one, flatten it, then re-test the homepage, a blog permalink, and a leftover http link from an old directory listing.
