Crawlability and Indexation Issues: How to Diagnose and Fix Them

"Why isn't this page ranking?" often has a simpler answer than a content or backlink problem — the page may never have been properly crawled or indexed in the first place. Diagnosing this correctly saves a lot of wasted content effort.

Key Takeaways

• Crawling and indexing are two separate steps, each with different failure points
• Google Search Console's URL inspection tool is the fastest way to diagnose the actual cause
• Most indexation issues are fixable without a developer once correctly identified

Crawling vs. Indexing

Crawling is when a search engine's bot visits a page. Indexing is the decision to store that page in the search engine's database for potential ranking. A page can be crawled but not indexed — this distinction matters for diagnosis.

Step 1: Check the URL Inspection Tool

In Search Console, inspect the specific URL that isn't appearing in search. It will tell you whether the page is indexed, and if not, the specific reason — such as "discovered, currently not indexed" or "blocked by robots.txt."

Common Crawling Issues

• Robots.txt accidentally disallowing the page or its parent directory
• No internal links pointing to the page, making it hard to discover
• Server errors or timeouts when the crawler attempts to access it

Common Indexing Issues

• An accidental noindex meta tag left on the page
• Duplicate or near-duplicate content that Google chooses not to index separately
• Content deemed too thin or low-value to warrant inclusion in the index

Step 2: Fix the Root Cause

Once the specific reason is identified, the fix is usually direct: remove an incorrect noindex tag, adjust robots.txt, add internal links, or genuinely improve thin content rather than just requesting reindexing.

Step 3: Request Indexing

After fixing the underlying issue, use the "request indexing" option in Search Console to prompt a re-crawl rather than waiting for the next scheduled crawl.

Step 4: Monitor for Recurrence

Check back after a few days to confirm the fix worked. Some issues — like a CMS plugin re-adding a noindex tag — can silently recur after a site update.

Common Mistakes to Avoid

• Assuming a page will eventually get indexed without investigating why it hasn't
• Requesting reindexing repeatedly without fixing the underlying cause
• Overlooking recently changed CMS settings or plugins as a source of new noindex tags

Conclusion

Indexation issues are usually mechanical, not mysterious — Search Console almost always tells you exactly what's wrong if you ask it the right way.