Semrush Site Audit Review 2026: I Ran It on 12 Websites. Here’s What Happened
Your traffic dropped and you don’t know why. Or maybe you just launched a site and Google isn’t indexing half your pages. I’ve been there.
Last year I ran the Semrush Site Audit tool on 12 client websites, from a 5-page bakery site to a 40,000-page e-commerce store. I wanted to know if it actually finds problems worth fixing, or just spits out scary-looking numbers.
Here’s my honest take.
Key Takeaways (TL;DR)
- Semrush Site Audit crawls up to 100,000 URLs per project and finds technical SEO issues like broken links, duplicate content, slow pages, and crawlability problems
- Pricing starts at $139.95/month for Pro, which includes 1 project with 100,000 URLs audited. A limited free version exists
- The issue prioritization (the “Errors/Warnings/Notices” system) is genuinely useful. It tells you what to fix first
- The crawl budget is per project, so huge sites need the $249.95/month Guru plan
- Best for marketers and agencies who want audits bundled with keyword research and rank tracking
- If you only want a one-off technical audit, cheaper tools like Screaming Frog do the job for free
Try Semrush here (free trial, no credit card needed for the limited account)
The Problem Semrush Site Audit Solves
Most site owners have no idea their site is broken. Google Search Console tells you some problems, but it’s vague. It says “Page indexing issue” and leaves you guessing.
Semrush Site Audit does the opposite. It crawls your entire site like Googlebot would and hands you a list of specific problems with specific URLs.
When I ran it on the e-commerce client’s store, it found 1,847 broken internal links. All pointing to discontinued product pages. That one report probably saved them thousands in wasted crawl budget and lost rankings.
How the Semrush Site Audit Actually Works
Setup
Setup took me about 10 minutes per site. You enter your domain, pick a crawl scope (subdomains or not), and set a crawl limit.
A few setup options matter:
- Crawl source: Domain, subdomains, or a sitemap. Sitemap-only crawls are faster but miss orphan pages
- Crawl limit: 100 to 100,000 URLs depending on your plan
- Crawl delay: You can throttle the crawl so it doesn’t hammer a small server. I used this on one cheap hosting account and it worked fine
- BASIC auth: You can audit staging sites behind a password. Handy
The Thematic Reports
Once the crawl finishes, Semrush sorts findings into themes:
- Thematic Reports Overview with a Site Health score (0-100)
- Core Web Vitals with real user data pulled from Chrome UX Report
- Internal Linking including orphan pages and crawl depth issues
- Markup covering hreflang, structured data, and AMP issues
- HTTPS certificate and mixed content checks
- International SEO for hreflang implementation
- Crawlability robots.txt issues, nofollowed internal links
The Site Health score is the thing you’ll stare at most. My bakery client sat at 61/100. Three weeks of fixes got it to 87. Traffic didn’t magically double, but indexed pages went up 40%.
Honest note: the score is a bit demoralizing. Almost no site scores above 90. Don’t panic if you see 70.
What I Liked (The Real Pros)
1. The issue prioritization is smart
Every issue gets an Errors, Warning, or Notice label, plus a severity percentage showing what share of your site it affects. This matters. Fixing a 100% severity error beats fixing twenty notices.
2. Orphan page detection with sitemap comparison
Enable the “compare with sitemap” option and Semrush flags pages in your sitemap that the crawler can’t reach through links. Those are often your money pages. No other tool in this price range does this as cleanly.
3. Core Web Vitals with actual field data
Instead of just lab data (Lighthouse), Semrush shows Chrome UX Report numbers for real users. That’s what Google actually ranks you on. I verified a few numbers against PageSpeed Insights and they matched.
4. Scheduled crawls and alerts
Set it to recrawl weekly. When something breaks (a plugin update once killed 300 URLs on a client site), you get an email the same day.
5. It’s bundled with everything else
This is the real value. Your Semrush subscription includes keyword research, backlink analysis, rank tracking, and Position Tracking. The Site Audit is one tool in a big toolbox.
What I Didn’t Like (Honest Cons)
To be frank, this tool has annoyances.
- JavaScript rendering is limited on Pro. The Pro plan renders JS on a sample, not the full crawl. If your site is a heavy React app, you’ll need the Guru plan or a dedicated renderer
- 100,000 URL cap per project. The 40,000-page store worked, but bigger sites get cut off
- Some issue explanations are thin. Semrush tells you what is wrong but sometimes not how to fix it. I still Googled fixes for a few hreflang errors
- Crawl speed on large sites. The 40k crawl took nearly two days with throttling enabled. Screaming Frog did it in an hour on my laptop
- Price. $139.95/month is steep if audits are all you need
One more gripe: the dashboard gets slow when a project has 50,000+ issues. Filtering works, but expect some loading spinners.
Semrush Site Audit Pricing in 2026
Here’s the current breakdown:
| Plan | Price | Site Audit Allowance |
|---|---|---|
| Free | $0 | 100 URLs, 1 project |
| Pro | $139.95/month | 100,000 URLs, 1 project |
| Guru | $249.95/month | 100,000 URLs, 5 projects |
| Business | $499.95/month | 100,000 URLs, 15 projects |
Note the URL limit is 100,000 across all paid plans. Guru just gives you more projects. For context, Pro cost $119.95 back in 2023, so the price has crept up.
All paid plans come with a 7-day money-back guarantee. Check Semrush pricing here to see current bundle deals.
Semrush Site Audit vs. The Alternatives
Semrush vs. Screaming Frog
Screaming Frog’s free tier is unbeatable for a one-off crawl (up to 500 URLs free). The paid version is $259/year, which is cheaper than two months of Semrush.
But Screaming Frog is a desktop tool. No cloud dashboard, no scheduling, no issue trend tracking. If you want ongoing monitoring, Semrush wins.
Semrush vs. Ahrefs Site Audit
Ahrefs Webmaster Tools is free and audits your own site. It’s surprisingly capable. Semrush still wins on orphan page detection and the thematic report structure, but if budget is zero, Ahrefs’ free tool is your first stop.
Semrush vs. Search Console
Search Console is free and shows you what Google actually sees. But its issue reports are grouped and vague. Semrush gives you per-URL lists you can export and hand to a developer. They complement each other. I use both.
Who Should Use Semrush Site Audit?
Good fit:
- Freelancers and agencies managing multiple client sites (Guru plan)
- Small businesses that want audits bundled with keyword tracking
- Marketers who need ongoing monitoring, not a one-time crawl
Poor fit:
- Someone who needs one audit and nothing else (use Screaming Frog free)
- Sites under 20 pages (Search Console covers you)
- Massive sites over 100,000 URLs on a budget
At BriskPick, we generally recommend Semrush for people juggling multiple SEO tasks and a lighter tool for single-purpose audits.
How I’d Use It: My Actual Workflow
Here’s the exact process I ran on each client site:
- Set up the project with sitemap comparison enabled
- Run the first full crawl and export all Errors only (ignore warnings for now)
- Sort errors by severity percentage, fix the top 5 issue types
- Recrawl, then move to warnings
- Set weekly scheduled crawls with email alerts
- Check the Site Health score trend monthly
That order matters. Errors first, always. Chasing notices before fixing 404s is wasted effort.
Bottom Line / Our Verdict
The Semrush Site Audit tool is the best ongoing monitoring option in its price range. The prioritization system, orphan page detection, and scheduled crawls make it worth $139.95/month if you also use the rest of Semrush.
If audits are your only need, download Screaming Frog instead. But if you want one subscription that handles audits, keywords, and rank tracking together, Semrush is the pick.
Try Semrush here with the free account and audit your first 100 URLs today. Start with the Errors report and work down.
FAQ
How long does a Semrush site audit take?
Small sites (under 1,000 pages) finish in 10-30 minutes. Large sites can take 1-2 days, especially with crawl throttling enabled.
Is Semrush Site Audit accurate?
In my testing, yes, with rare false positives on redirects. Always manually verify flagged URLs before bulk-fixing anything.
Does Semrush Site Audit check Core Web Vitals?
Yes. It pulls real Chrome UX Report field data plus Lighthouse lab data for pages with enough traffic.
Can I audit a competitor’s site with Semrush?
Yes. The audit works on any public domain, which is useful for seeing why a competitor ranks better. Orphan page detection only works on sites you own, though.
Is there a free alternative?
Google Search Console (free) for indexing issues, and Screaming Frog’s free tier (500 URLs) for one-off crawls. Both cover basics without a subscription.