Running a Full Technical SEO Audit With Semrush's Site Audit Tool
Semrush's Site Audit tool can crawl thousands of pages and return hundreds of flagged issues, which is exactly the problem — an unfiltered issue list overwhelms most teams into inaction. Getting real value from the tool means configuring the crawl correctly up front and triaging results by actual business impact, not just by Semrush's default severity labels.
Configuring the Crawl Correctly
Before running the first audit, set the crawl scope deliberately: exclude staging subdomains, parameter-heavy URLs that create duplicate crawl paths, and any sections intentionally blocked from indexing. Set the crawl source to follow your XML sitemap in addition to internal links, since sitemap-only or link-only crawls each miss different pages. For large sites, set a sensible page limit per crawl and schedule recurring crawls (weekly for active sites, monthly for stable ones) rather than running ad hoc audits inconsistently.
Understanding the Site Health Score
The Site Health percentage is a useful trend indicator but a poor absolute benchmark — comparing your score against an unrelated site's score is meaningless since issue weighting varies by site structure. Track your own score over time instead; a declining trend after a migration or redesign is a much more actionable signal than the raw number itself.
Triaging Errors, Warnings, and Notices
Semrush buckets issues into Errors (high severity), Warnings (moderate), and Notices (low, often informational). Resist fixing in that literal order — some "Warnings" like slow page load on high-traffic pages have more revenue impact than an "Error" on an orphaned, low-value page. Build a custom priority list crossing Semrush's severity label against your own page-value data (organic traffic or conversions per page) before assigning fixes.
The Highest-Impact Issue Categories
- Crawlability and indexability: broken internal links, redirect chains, and pages blocked by robots.txt or noindex tags unintentionally — these directly prevent Google from finding or ranking content.
- Core Web Vitals and page speed: flagged via the tool's performance report, these increasingly correlate with both rankings and conversion rate, making them worth prioritizing even when volume of affected pages is small.
- Duplicate content and missing meta tags: high in raw count but usually lower in individual page impact — batch-fix these with templated solutions (dynamic title tag generation, canonical tag rules) rather than page by page.
- Structured data errors: increasingly important as more SERP features depend on valid schema markup; errors here can silently disable rich results a page previously qualified for.
Turning Audit Results Into Fixed Issues
Export prioritized issues into a project management tool with clear ownership and deadlines rather than leaving them in the Semrush dashboard, where they're easy to forget. After fixes are deployed, use the tool's re-check feature on the specific affected URLs rather than waiting for the next full crawl, which confirms the fix worked and keeps the Site Health trend line accurate. For a deeper look at this, see our guide, Free Technical SEO Audit Tools: Screaming Frog Free Version, PageSpeed Insights, and More.
Building a Recurring Audit Cadence
A monthly full crawl paired with weekly monitoring of critical pages (homepage, top revenue pages, recently published content) catches most issues before they compound. Treat the audit as an ongoing process, not a one-time project — technical debt accumulates continuously as content, plugins, and site structure change. For a deeper look at this, see our guide, Best AI Tools for Technical Site Audits.