Redirect chain
A sequence where one URL redirects to another, which redirects again, forcing crawlers and browsers through multiple hops to reach the destination.
In depth
What it really means
Chains accumulate quietly. Each site migration adds a hop, and after three redesigns a URL from 2019 might pass through four intermediate addresses before landing anywhere useful.
They waste crawl budget, slow page loads for real users, and crawlers may stop following after a handful of hops, at which point the destination is simply unreachable.
How it works
- An old URL returns a 301 to a second URL.
- That URL returns another 301, and so on.
- Each hop costs a request and adds latency.
- Crawlers may abandon the chain after several hops, leaving the destination undiscovered.
Pros & cons
Pros
- Trivially fixable once identified.
- Fixing them speeds up real user journeys.
- The audit usually surfaces broken redirects too.
Cons
- Finding them needs a crawl tool that reports full chains.
- Chains build up invisibly across migrations.
- Some chains sit in third-party or CDN configuration.
Common mistakes
- Adding a new redirect rule pointing at a URL that already redirects.
- Never auditing redirects after a migration.
- Leaving loops, where a chain returns to its own starting point.
- Updating redirects while leaving internal links pointing at the old URLs.
Best practices
- Point every redirect directly at the final destination, one hop.
- Audit the full redirect map after every migration.
- Update internal links to the final URL rather than relying on the redirect.
- Check for loops specifically, since they make a page permanently unreachable.
FAQs
What is a redirect chain?
A sequence where one URL redirects to another which redirects again, forcing multiple hops before reaching the destination.
Do redirect chains hurt SEO?
Yes, though modestly per chain. They waste crawl budget, slow page loads, and crawlers may stop following after several hops, leaving the destination undiscovered.
How many redirects is too many?
One is ideal. Beyond three hops you risk crawlers abandoning the chain. Any chain at all is worth flattening since the fix is straightforward.
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