How to Run Your First SEO Audit with Semrush: Step-by-Step Guide for Beginners (2026)
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If you’ve ever wondered why your website isn’t showing up on Google’s first page — or why a competitor keeps outranking you — an SEO audit is the first step to finding answers. For beginners, running an SEO audit can feel intimidating, but with the right tool, it’s surprisingly straightforward. This guide shows you how to run an SEO audit with Semrush from scratch, even if you’ve never used SEO software before.
What Is an SEO Audit?
An SEO audit is a comprehensive analysis of your website’s health from a search engine’s perspective. It checks for technical issues (broken links, slow pages), content gaps (missing meta tags, thin pages), and off-page factors (backlink profile). Think of it as a full checkup for your site — finding problems before they hurt your rankings.
According to a 2025 study by Backlinko, sites that perform quarterly SEO audits rank an average of 43% higher in organic search results than those that don’t. Yet most small business owners and bloggers never run one — either because it sounds too technical or because they don’t know where to start.
That’s where Semrush comes in. It’s one of the most popular all-in-one SEO platforms, used by over 10 million marketers worldwide, and its Site Audit tool automates 90% of the work.
Why Semrush for SEO Audits?
Semrush isn’t the only SEO tool on the market, but it consistently ranks as a top choice for good reasons. Its Site Audit tool crawls your website the same way Googlebot does, then flags every issue it finds — categorized by severity (Error, Warning, Notice) so you know exactly what to fix first.
Semrush vs Alternatives: Feature Comparison
| Feature | Semrush | Ahrefs | Moz Pro | Google Search Console |
|---|---|---|---|---|
| **Crawl capacity (Pro)** | Up to 100,000 pages | Up to 100,000 pages | Up to 10,000 pages | Unlimited (GSC data) |
| **Issue types detected** | 140+ | 100+ | 50+ | 20+ |
| **Historical tracking** | Full crawl history | Full crawl history | 3-month history | 16-month history |
| **Prioritized recommendations** | ✅ With traffic impact estimates | ✅ With traffic impact estimates | ⚠️ Basic priority only | ❌ Raw data only |
| **Competitor comparison** | ✅ Full competitor analysis | ✅ Strong backlink analysis | ⚠️ Limited | ❌ |
| **Keyword research** | ✅ 20B+ keyword database | ✅ 10B+ keyword database | ✅ 5B+ keyword database | ❌ Performance data only |
| **Backlink analysis** | ✅ Comprehensive | ✅ Best in class | ✅ Good | ❌ Limited |
| **Rank tracking** | âś… Up to 500 keywords | âś… Up to 200 keywords (Lite) | âś… Up to 200 keywords | âś… Search impressions only |
| **Free tier availability** | ⚠️ 7-day trial | ⚠️ 7-day trial ($7) | ⚠️ 30-day trial | ✅ 100% free |
| **Starting price** | $129.95/mo | $99/mo (Lite) | $99/mo (Standard) | Free |
For most bloggers and small businesses, Semrush offers the best all-in-one value because it combines site audit, keyword research, competitor analysis, and rank tracking in one platform. Ahrefs is stronger for pure backlink analysis but lacks Semrush’s breadth of built-in tools. Moz Pro is more beginner-friendly but has a smaller database and fewer audit features.
Step 1: Create Your Semrush Account
Before you can run any audit, you’ll need a Semrush account.
- Go to Semrush’s website and click Get Started Free
- Choose a plan — the Pro plan is $129.95/month and includes one user, 500 keyword tracking, and unlimited site audits
- Enter your email and set a password
- Verify your email inbox
There’s a 7-day free trial, so you can run your first audit without committing to a subscription. After the trial, the Pro plan gives you everything you need for a single site.
đź’ˇ Pro tip: Semrush often runs promotions offering extended trials or discounts for annual billing. Check for current offers before signing up.
Step 2: Set Up the Site Audit Tool
Once you’re logged into your Semrush dashboard:
- In the left sidebar under SEO Toolkit, click Site Audit
- Click the + New Project button (blue, top-right)
- Enter your website’s URL (e.g.,
https://yourwebsite.com) - Name your project — this can be anything you’ll recognize, like “My Blog Audit”
- Click Create Project
If you’re using managed WordPress hosting like Kinsta or WP Engine, your site audit will run faster because of their server-level caching and CDN — fewer crawl errors related to slow response times. For a full comparison of hosting providers optimized for SEO, check out our best WordPress hosting guide.
Step 3: Configure Your Crawl Settings
Before running the audit, Semrush asks you to configure a few settings. Here’s what matters:
Crawl Source: Choose Website. This tells Semrush to crawl your live site. (The other option — uploading a file — is for staging environments.)
Crawl Scope:
- Standard (default): Crawls up to 100 pages for Pro plans. Good for small to medium sites.
- Custom: Set your own limit. If your site has 500+ pages, bump this up.
Crawl Delay:
- Set to 1 second by default. Leave this alone — it prevents your server from getting overwhelmed.
Include/Exclude URLs:
- Exclude:
*/wp-admin/*,*/wp-login.php,*/cart/*,*/checkout/*,*/feed/* - These are non-public pages that don’t need auditing
Check “Crawl JavaScript”:
- âś… Enable this. Modern websites use JavaScript to render content, and Google processes JS. You want Semrush to see what Google sees.
Click Start Site Audit. Depending on your site’s size, the first crawl takes anywhere from 2 to 15 minutes.
Step 4: Read Your Audit Report
Once the crawl finishes, Semrush shows you a dashboard with key metrics:
Health Score: A percentage (0-100) measuring your site’s overall SEO health. Don’t panic if it’s low — even good sites score 70-85. The goal is improvement over time.
Errors vs Warnings vs Notices:
- Errors: Critical issues that directly hurt rankings — fix these first
- Warnings: Important but less urgent — fix these second
- Notices: Minor suggestions — nice-to-haves
Top Issues: Semrush automatically prioritizes the most impactful problems, showing estimated traffic loss for each. Focus on the items in red.
Crawl Stats: Pages crawled, crawl duration, response time, and page size.
Step 5: Fix the Most Common Issues
Here’s a quick fix guide for the most common errors Semrush flags — what they mean and how to fix them.
Broken Links (404 Errors)
What Semrush shows: 404 Not Found for internal or external links.
How to fix: For internal broken links, update the URL to point to a working page or use a 301 redirect. For external links (linking to other sites), check if the target page moved — update the URL or remove the link.
Most SEO audits find 5-20 broken links on an average site. Fix each one by editing the page that contains the bad link.
Missing Meta Descriptions
What Semrush shows: Pages without a meta description tag.
How to fix: Write a unique meta description for each page — 150-160 characters, including your target keyword naturally. Meta descriptions don’t directly boost rankings, but they improve click-through rates from search results, which indirectly helps SEO.
If you’re using WordPress with a plugin like Yoast SEO or Rank Math, you can add meta descriptions from the page editor without touching any code.
Slow Page Speed
What Semrush shows: Pages with load time exceeding 2.5 seconds.
How to fix: Slow pages are one of the biggest ranking killers. Google’s Core Web Vitals update (now fully rolled out) makes speed a direct ranking factor. Common fixes:
- Compress images with tools like TinyPNG or ShortPixel
- Enable browser caching
- Use a CDN (Content Delivery Network)
- Minimize CSS, JavaScript, and HTML
- Upgrade your hosting — SiteGround’s managed WordPress hosting includes built-in caching and a free CDN that can instantly cut load times in half
For the best SEO performance, consider premium managed hosting. Our WordPress hosting comparison guide covers which hosts deliver the fastest TTFB and best Core Web Vitals scores.
Missing Alt Text on Images
What Semrush shows: Images without alt attributes.
How to fix: Alt text helps Google understand what an image shows, and it’s a ranking signal for image search. Write descriptive alt text for each image — not keyword-stuffed, but natural: “blue-widget-product-photo.jpg” → alt="Blue widget product on white background".
Duplicate Title Tags
What Semrush shows: Two or more pages with the same title tag.
How to fix: Every page on your site should have a unique title tag. For e-commerce sites, this often happens with product variants or paginated archives. Use canonical tags (rel="canonical") to tell Google which version is the primary one.
Step 6: Schedule Recurring Audits
One audit is a good start, but SEO is an ongoing process. Semrush lets you schedule automatic re-crawls:
- In the Site Audit project, click the Settings gear icon
- Under Schedule, choose Weekly or Monthly
- You’ll get email notifications when new issues appear
Weekly is ideal for active sites where you publish regularly. Monthly is fine for smaller blogs. The key is consistency — every audit snapshot is saved, so you can see your Health Score trending upward over weeks and months.
Pros & Cons of Using Semrush for SEO Audits
âś… Pros
- Comprehensive audit covering 140+ issue types
- Prioritized recommendations with estimated traffic impact
- Full crawl history for tracking improvement over time
- All-in-one platform (audit + keyword research + rank tracking + competitor analysis)
- Customizable crawl settings for any site size
- Integrates with Google Analytics, Search Console, and more
❌ Cons
- Higher price point ($129.95/mo) compared to some alternatives
- Learning curve for the full platform beyond the Site Audit tool
- Free trial limited to 7 days
- Crawl limits on lower-tier plans (100K pages on Pro)
- Some advanced features require the Guru or Business plans
Frequently Asked Questions About SEO Audits
Hosting Recommendations for SEO Performance
Your hosting provider plays a critical role in your SEO audit results. Here’s how different hosting tiers affect your SEO:
| Hosting Type | Impact on SEO Audit | Recommended Provider |
|---|---|---|
| Budget shared | May flag slow TTFB, intermittent downtime | Hostinger ($2.99/mo) |
| Mid-range shared | Good Core Web Vitals, occasional warnings | SiteGround ($3.99/mo promo) |
| Managed WordPress | Excellent speed scores, minimal SEO issues | WP Engine ($24/mo) |
| Premium managed | Best TTFB, global CDN, 99.99% uptime | Kinsta ($35/mo) |
If your Semrush audit shows repeated server-related errors (slow response times, crawl timeouts, downtime), upgrading your hosting is often the single most impactful fix you can make. For a detailed breakdown of all options, read our 8 Best WordPress Hosting Providers guide.
Internal Linking: The Missing Piece
One thing Semrush’s Site Audit won’t automatically optimize is internal linking — linking from one page on your site to another. This is one of the simplest, most overlooked SEO improvements you can make.
When you write a new article, link back to an older relevant post. When you update an old post, link forward to newer content. Good internal linking spreads “link equity” (ranking power) across your site and helps Google understand your content structure.
For example, if you found this guide useful, you might also like our hosting comparison article — internal links like that help both pages rank better.
Final Checklist: Your SEO Audit Routine
Here’s a simple routine to follow after your first audit:
- Day 1: Run the audit and fix all Errors (broken links, missing meta tags, slow pages)
- Day 3: Fix all Warnings (duplicate content, missing alt text, thin content)
- Day 7: Address Notices (suggestions for optimization)
- Week 2: Publish a new piece of content targeting a keyword your audit uncovered
- Month 1: Run a second audit and compare your Health Score
Wrapping Up
Running an SEO audit with Semrush is the single most effective way to understand what’s holding your website back in search rankings. The tool does the heavy lifting — crawling, analyzing, and prioritizing — so you can focus on fixing what matters.
If you’re serious about growing organic traffic, make the audit a recurring habit. Schedule a weekly or monthly crawl, review the top issues, and chip away at them systematically. Over six months, most sites can move from a Health Score of 40 to 80+ just by following Semrush’s recommendations.
And don’t forget: your hosting provider directly impacts your audit results. If speed issues keep appearing, consider upgrading to a managed WordPress host like WP Engine or SiteGround for better Core Web Vitals scores.
Ready to run your first audit? Start your free Semrush trial here and see what your site looks like through Google’s eyes. It’s the smartest 20 minutes you’ll spend on your website all month.