Most SEO audits catch the obvious problems. Broken links, a missing meta description, a homepage that loads slowly on mobile. Those fixes matter, but they rarely explain why a site with clean Core Web Vitals still underperforms against a weaker competitor. After running audits across fintech, SaaS, and manufacturing sites this year, five issues keep showing up in exactly the sites everyone else already checked.
1. Orphan Pages Eating Crawl Budget
Pages with no internal links pointing to them still get crawled if a search engine finds them through a sitemap, but they rarely get crawled often, and they almost never rank. Worse, on larger sites, dozens of these orphan pages quietly eat crawl budget that should go to your priority pages instead. Pull a full crawl and cross-reference it against your internal link map. Anything with zero inbound internal links gets linked from somewhere relevant, or removed.
2. Noindex Tags Nobody Remembers Setting
Development teams often noindex staging pages, then forget to reverse the tag after launch. We've found service pages sitting at noindex for over a year, quietly invisible to Google the entire time while the marketing team wondered why organic traffic never moved. Audit every noindex tag on the site and confirm each one is still intentional.
3. Redirect Chains Instead Of Direct Redirects
A single 301 redirect passes most of its ranking value forward. A chain of three or four redirects stacked on top of each other loses value at every hop, and slows the page down for every visitor who lands on the old URL. Map every redirect chain on the site back to a single, direct destination.
4. Schema That Validates But Doesn't Match The Page
A lot of schema markup technically validates against Google's testing tool while still being wrong. Product schema pointing to outdated pricing. FAQ schema listing questions that no longer appear anywhere on the page. Article schema missing the author field entirely. Validation only checks the format. Someone still has to check that the content matches the page.
5. AI Crawler Access
This one is new for most audits. GPTBot, PerplexityBot, and other AI crawlers respect robots.txt the same way Googlebot does, and a surprising number of sites block them by accident, usually through an overly broad rule written to stop scrapers. If you want your content to show up inside AI answers, start by confirming these crawlers can actually reach your key pages.
An audit that only checks Core Web Vitals is checking the part everyone already fixed.
How To Catch These In Your Own Audit
- Cross-reference your crawl export against your internal link map to surface orphan pages.
- Export every noindex and canonical tag on the site into one sheet and review it line by line.
- Trace every redirect back to its final destination, not just the first hop.
- Manually spot-check schema against the live page content, not just the validator.
- Check robots.txt against the current list of AI crawler user agents.
None of these fixes are complicated on their own. They're just easy to miss when an audit stops at the checklist everyone already knows.