Why Some Backlinks Stay Unindexed and How to Fix It

https://theseoledger.hexaforgey.com/posts/why-some-backlinks-stay-unindexed-and-how-to-fix-it

Some backlinks don't get indexed because Google's crawlers can't access them due to nofollow tags, redirect chains, or poor site structure. To fix this, ensure links are dofollow, check for crawl errors in Search Console, and submit a fresh sitemap to speed up re-crawling.