Learn how to do an SEO audit step by step, covering crawlability, indexation, technical SEO, content, links, performance and conversion.
An SEO audit is a structured review of a website’s ability to be crawled, indexed, understood and ranked by search engines. It also helps identify the issues that may be limiting organic traffic, leads and conversions.
A good SEO audit is not just a checklist of errors. It should explain what is wrong, why it matters, how important each issue is and what should be fixed first.
In this guide, we explain how to do an SEO audit properly, from technical checks and Core Web Vitals through to content quality, internal linking, backlinks, structured data and conversion opportunities.
What Is An SEO Audit?
An SEO audit is a review of the technical, content and authority signals that affect how well a website performs in organic search.
The purpose is to identify issues that may prevent search engines from crawling, indexing, understanding or ranking your pages. It also helps identify opportunities to improve visibility, traffic and lead generation.
An SEO audit usually reviews:
- Crawlability
- Indexation
- Technical SEO
- Website architecture
- Internal linking
- Metadata
- Content quality
- Search intent
- Core Web Vitals
- Structured data
- Backlinks
- Analytics and tracking
- UX and conversion paths
If you want a broader website review that also covers UX, performance and conversion, see our website audit services.
Why SEO Audits Matter
SEO audits matter because websites change constantly. Pages are added, content becomes outdated, redirects break, technical issues appear and Google’s expectations evolve.
Without regular audits, small issues can build up and gradually reduce performance.
An SEO audit can help you:
- Find technical issues affecting rankings
- Understand why organic traffic has dropped
- Improve crawlability and indexation
- Identify content gaps
- Improve internal links
- Protect SEO during redesigns or migrations
- Prioritise high-impact fixes
- Improve conversion from organic traffic
For a deeper introduction, our guide on technical SEO issues covers many of the most common problems.
SEO Audit Tools You May Need
You do not need every SEO tool to complete a useful audit, but you do need reliable data.
| Tool | Best For |
|---|---|
| Google Search Console | Indexation, queries, pages, technical issues and Core Web Vitals |
| Google Analytics | Traffic, engagement, conversions and landing page performance |
| PageSpeed Insights | Core Web Vitals and performance checks |
| Screaming Frog | Crawling, metadata, status codes, canonicals and internal links |
| Semrush or Ahrefs | Keyword visibility, backlinks, competitor gaps and ranking opportunities |
| Chrome DevTools | Frontend performance, rendering and JavaScript debugging |
If you are new to Search Console, read our Google Search Console guide.
Step 1: Define The SEO Audit Objectives
Before running tools, define what the audit is trying to solve.
Different objectives require different levels of analysis.
- Has organic traffic declined?
- Has a recent migration affected rankings?
- Are important pages not indexed?
- Is the website slow?
- Are rankings improving but leads not increasing?
- Is the site being redesigned?
- Are competitors outranking key pages?
Without clear objectives, an SEO audit can become a long list of issues with no obvious priority.
The best audits start with business context, not tools.
Step 2: Crawl The Website
A crawl helps you see the website in a similar way to a search engine. It identifies URLs, status codes, metadata, canonicals, internal links and many common technical issues.
Use a crawler such as Screaming Frog, Sitebulb or Semrush Site Audit to review the website.
During the crawl, look for:
- Broken pages
- Redirect chains
- Duplicate URLs
- Missing title tags
- Missing meta descriptions
- Duplicate metadata
- Canonical issues
- Noindex tags
- Orphan pages
- Thin pages
- Excessive crawl depth
- Internal linking problems
The crawl gives you the technical foundation for the rest of the audit.
Step 3: Check Crawlability
Crawlability is about whether search engines can access the pages you want them to discover.
If Google cannot crawl a page, it cannot properly evaluate or rank it.
Check:
- Robots.txt rules
- XML sitemap availability
- Server errors
- Blocked resources
- Redirect chains
- Navigation links
- JavaScript-rendered content
- Pagination and faceted navigation
- Internal links to important pages
Review the robots.txt file carefully. A small mistake can block important sections of the website.
Also check your XML sitemap. It should include canonical, indexable URLs that you actually want search engines to find.
Step 4: Check Indexation
Indexation is about whether Google has added your pages to its index.
A page can be crawlable but not indexed. That usually means Google has chosen not to include it, or that there is a technical directive preventing indexation.
Use Google Search Console to check:
- Indexed pages
- Crawled but not indexed URLs
- Discovered but not indexed URLs
- Excluded by noindex
- Duplicate without user-selected canonical
- Alternate page with canonical
- Soft 404s
- Server errors
Do not assume every page should be indexed. Low-quality, duplicate or thin pages may not deserve indexation.
The goal is to make sure important commercial and informational pages are indexable, useful and internally linked.
Step 5: Review Website Architecture
Website architecture affects how users and search engines understand your site.
A strong structure helps important pages receive more internal authority and makes content easier to discover.
Review:
- Main navigation
- Service page structure
- Blog categories
- URL structure
- Breadcrumbs
- Internal links
- Crawl depth
- Content clusters
- Duplicate or overlapping pages
Important pages should not be buried too deeply. If a key service page takes four or five clicks to reach, it may not receive enough internal importance.
Your website architecture should clearly show what your business wants to be known for.
Step 6: Review URL Structure
URLs should be clear, consistent and descriptive.
Good URLs help users and search engines understand page topics.
Check for:
- Overly long URLs
- Duplicate URL patterns
- Unnecessary parameters
- Mixed case URLs
- Old URLs without redirects
- Inconsistent category structures
- URLs that no longer match page content
Avoid changing URLs without a clear reason. If you do change URLs, implement 301 redirects and update internal links.
If you are planning a redesign or migration, an audit should happen before URL decisions are made. Our website redesign signs article explains when broader website changes may be needed.
Step 7: Review Status Codes And Redirects
Status codes tell browsers and search engines what happened when a URL was requested.
Review:
- 200 OK pages
- 301 redirects
- 302 redirects
- 404 errors
- 500 server errors
- Redirect chains
- Redirect loops
Common issues include broken internal links, outdated redirects and redirected pages still linked internally.
Where possible, internal links should point directly to the final destination rather than passing through redirects.
Step 8: Review Title Tags
Title tags are still one of the most important on-page SEO elements.
They help search engines understand page topics and influence how pages appear in search results.
Check title tags for:
- Missing titles
- Duplicate titles
- Overly long titles
- Overly short titles
- Keyword stuffing
- Titles that do not match search intent
- Titles that are not compelling enough to earn clicks
Every important page should have a unique, descriptive title that matches the search intent behind the page.
Step 9: Review Meta Descriptions
Meta descriptions do not directly control rankings, but they can influence click-through rate.
A good meta description should summarise the page and give users a reason to click.
Check for:
- Missing meta descriptions
- Duplicate meta descriptions
- Descriptions that are too long
- Descriptions that are too vague
- Descriptions that do not match the page content
- Descriptions with no clear value proposition
For commercial pages, meta descriptions should speak to the user’s problem and the outcome they want.
Step 10: Review Heading Structure
Headings help structure content for users and search engines.
Review whether each page has a clear H1 and logical H2 and H3 sections.
Check for:
- Missing H1 tags
- Multiple confusing H1s
- Headings used only for styling
- Headings that do not describe the section
- Poor content hierarchy
- Important questions not covered in headings
Good headings improve readability and make it easier for search engines and AI systems to understand the page.
Step 11: Review Content Quality
Content quality is one of the most important parts of an SEO audit.
Technical fixes will not help much if the content does not satisfy search intent.
Review each important page for:
- Search intent alignment
- Content depth
- Original insight
- Clear structure
- Useful examples
- Freshness
- Internal links
- Expertise and trust signals
- Clear calls to action
Thin, generic or outdated content is unlikely to perform well, especially in competitive search results.
For more on content quality, read our article on AI content vs human content.
Step 12: Map Search Intent
Search intent is the reason behind a search query.
A page can be well written but still fail if it targets the wrong intent.
Common intent types include:
- Informational
- Commercial research
- Transactional
- Navigational
- Local
During the audit, compare the page against the current search results. Ask whether Google is rewarding guides, service pages, tools, comparison articles, local pages or ecommerce pages.
If your page format does not match the SERP intent, rankings may be difficult.
Step 13: Identify Content Gaps
Content gaps are topics your audience searches for but your website does not cover properly.
Use Google Search Console, Semrush, Ahrefs and competitor research to identify missing opportunities.
Look for:
- Questions users ask before buying
- Comparison searches
- Cost-related searches
- Checklist searches
- Problem-led searches
- Industry-specific variations
- Service-specific long-tail terms
For example, if you offer website audits, supporting articles such as website audit vs website redesign and website audit cost can help build topical authority.
Step 14: Review Internal Linking
Internal links help search engines discover pages and understand which pages are important.
They also help users move from informational content to commercial pages.
Review:
- Links to key service pages
- Links between related articles
- Orphan pages
- Overused exact-match anchors
- Broken internal links
- Redirecting internal links
- Navigation and footer links
- Contextual links inside body copy
Important commercial pages should receive internal links from relevant articles and supporting content.
For example, technical SEO content should naturally link to website audit services, web development services and digital marketing services where relevant.
Step 15: Review Core Web Vitals
Core Web Vitals measure loading performance, responsiveness and visual stability.
The current metrics are:
- LCP: Largest Contentful Paint
- INP: Interaction to Next Paint
- CLS: Cumulative Layout Shift
Use PageSpeed Insights and Google Search Console to identify pages that need improvement.
Review:
- Slow loading templates
- Oversized images
- Render-blocking resources
- Heavy JavaScript
- Layout shifts
- Third-party scripts
- Mobile performance issues
For a full guide, read Core Web Vitals: What They Are and How to Improve Them.
Step 16: Review Mobile Usability
Most websites receive a significant share of traffic from mobile devices.
Mobile usability should be reviewed manually, not just through automated tools.
Check:
- Navigation usability
- Button sizes
- Form usability
- Text readability
- Page speed
- Sticky elements
- Tap targets
- Hero section clarity
- Content spacing
A page may technically pass mobile checks but still be difficult to use on a real device.
Step 17: Review Structured Data
Structured data helps search engines understand entities, page types and relationships.
It can also support enhanced search results where eligible.
Use Google’s Rich Results Test and Schema.org documentation to review markup.
Common schema types include:
- Organization
- WebSite
- BreadcrumbList
- Article
- FAQPage
- Service
- Product
- Review
Structured data should match visible page content. Do not add schema for content that users cannot see.
Step 18: Review Images
Images affect both SEO and performance.
Review:
- File size
- Image dimensions
- Alt text
- Lazy loading
- Hero image priority
- WebP or AVIF usage
- Decorative images
- Image names
Alt text should describe meaningful images where useful. It should not be stuffed with keywords.
Step 19: Review Accessibility
Accessibility improves usability for all visitors and can highlight issues that also affect SEO and conversion.
Review:
- Colour contrast
- Keyboard navigation
- Focus states
- Form labels
- Alt text
- Heading structure
- Readable font sizes
- Descriptive links
- Error messages
Accessibility should be considered during design and development, not added at the end.
Step 20: Review Backlinks
Backlinks remain an important authority signal, but quality matters more than quantity.
Use backlink tools to review:
- Referring domains
- Link quality
- Anchor text
- Lost links
- Competitor link gaps
- Toxic or suspicious links
- Links to outdated URLs
- Unlinked brand mentions
The goal is not simply to build more links. It is to understand whether your website has enough authority to compete for its target topics.
For a basic introduction, read our guide on what backlinks are in SEO.
Step 21: Review Analytics And Tracking
An SEO audit should include tracking and measurement.
If analytics is inaccurate, it becomes difficult to judge performance.
Review:
- GA4 setup
- Search Console setup
- Conversion events
- Form tracking
- Phone click tracking
- Thank-you pages
- Cross-domain tracking
- Spam or internal traffic filters
- Reporting dashboards
SEO should not only be measured by rankings. Track enquiries, quality of traffic, conversion rate and commercial value.
Step 22: Review Conversion Paths
Organic traffic is only valuable if it supports business goals.
Review how easily users can become enquiries or customers.
Check:
- Calls to action
- Contact forms
- Page layouts
- Trust signals
- Case studies
- Testimonials
- Lead magnets
- Navigation paths
- Mobile conversion experience
If users are landing on content but not moving deeper into the site, you may need stronger internal links and clearer next steps.
Our guide on why users leave websites without converting covers this in more detail.
Step 23: Prioritise SEO Audit Issues
The most important part of an SEO audit is prioritisation.
Not every issue is equally important. Some fixes may have a major impact, while others are minor housekeeping tasks.
Use a simple prioritisation framework:
| Priority | Description | Example |
|---|---|---|
| Critical | Issues preventing crawl, indexation or conversion | Noindex on key service pages |
| High | Issues likely to affect rankings or leads | Poor internal linking to commercial pages |
| Medium | Useful improvements but not urgent | Duplicate meta descriptions on low-priority pages |
| Low | Minor improvements or housekeeping | Image filenames on older blog posts |
A useful audit should clearly explain what to fix first.
Step 24: Create An SEO Audit Action Plan
An SEO audit should end with a clear action plan.
The action plan should include:
- Issue
- Why it matters
- Affected URLs
- Recommended fix
- Priority
- Owner
- Estimated effort
- Expected impact
This makes the audit useful for developers, marketers and decision-makers.
A long list of issues without ownership and priority is unlikely to be implemented.
Step 25: Monitor Results After Fixes
SEO improvements take time to show results.
After fixes are implemented, monitor:
- Indexation changes
- Crawl errors
- Keyword visibility
- Organic clicks
- Organic impressions
- Average position
- Core Web Vitals
- Conversions
- Lead quality
Do not judge an audit only by immediate ranking changes. Some improvements help search engines understand the site better over time.
SEO Audit Checklist
| Audit Area | What To Check |
|---|---|
| Crawlability | Robots.txt, sitemaps, internal links, server errors |
| Indexation | Indexed pages, excluded URLs, noindex tags, canonicals |
| Technical SEO | Status codes, redirects, duplicate pages, site structure |
| Metadata | Title tags, meta descriptions, headings |
| Content | Search intent, quality, depth, freshness, content gaps |
| Internal Links | Contextual links, orphan pages, anchor text, crawl depth |
| Performance | Core Web Vitals, page speed, JavaScript, images |
| Structured Data | Schema accuracy, validation and visible content alignment |
| Backlinks | Referring domains, authority, lost links, competitor gaps |
| Conversion | Forms, CTAs, trust signals and enquiry paths |
Common SEO Audit Mistakes
Relying Only On Automated Tools
Automated tools are useful, but they cannot understand business context, search intent or commercial priority.
Not Prioritising Issues
A list of 200 issues is not useful unless it explains what matters most.
Ignoring Conversion Performance
Ranking improvements are less valuable if users do not enquire, buy or take action.
Auditing Every Page Equally
Commercial pages, high-traffic pages and strategic content should usually be reviewed first.
No Follow-Up After Implementation
Fixes should be monitored after implementation to confirm that performance improves.
How Often Should You Do An SEO Audit?
Most businesses should complete an SEO audit at least once a year.
You should also audit your website before or after major changes, such as:
- Website redesigns
- CMS migrations
- New service launches
- Traffic drops
- Algorithm updates
- Major content pruning
- Technical rebuilds
For high-value websites, quarterly technical reviews may be more appropriate.
When Should You Get Professional Help?
You may need professional help if your website has persistent ranking issues, traffic drops, indexation problems, migration risks or technical performance issues.
Professional SEO audits are especially useful when:
- Organic traffic has dropped
- Important pages are not ranking
- Google is not indexing key pages
- You are planning a redesign
- You are moving CMS platforms
- You have Core Web Vitals issues
- You have lots of legacy content
- You need a prioritised action plan
At Rubik Digital, our website audit services cover SEO, UX, technical performance, accessibility, content and conversion so you can understand what to fix first.
Final Thoughts
An SEO audit should help you understand how well your website can be crawled, indexed, understood and ranked.
It should also help identify which issues are limiting traffic, leads and business performance.
The best SEO audits combine technical analysis, content review, performance checks, internal linking, authority signals and conversion insight.
Most importantly, an SEO audit should result in a clear action plan. The value is not in finding issues. The value is in knowing what to fix first and why it matters.
If you want an expert review of your website’s SEO, UX and technical performance, start with our website audit services.
Frequently Asked Questions
What is an SEO audit?
An SEO audit is a review of the technical, content and authority factors that affect how well a website performs in organic search.
How do you do an SEO audit?
To do an SEO audit, review crawlability, indexation, technical SEO, metadata, content quality, internal links, Core Web Vitals, backlinks, analytics and conversion paths.
How long does an SEO audit take?
A basic audit may take a few days. A detailed audit for a larger or more complex website can take several weeks depending on scope.
What tools do you need for an SEO audit?
Useful tools include Google Search Console, Google Analytics, PageSpeed Insights, Screaming Frog, Semrush, Ahrefs and Chrome DevTools.
How much does an SEO audit cost?
SEO audit costs vary depending on website size, complexity and depth of analysis. A detailed professional audit usually costs more than an automated tool report because it includes expert review and prioritisation.
What is included in a technical SEO audit?
A technical SEO audit reviews crawlability, indexation, redirects, status codes, canonicals, sitemaps, structured data, page speed, mobile usability and Core Web Vitals.
How often should you do an SEO audit?
Most businesses should audit their website at least once a year, or before major changes such as redesigns, migrations or SEO campaigns.
Is an SEO audit worth it?
Yes, an SEO audit is worth it if it identifies issues that are limiting visibility, traffic, rankings, leads or conversions and provides a clear action plan.
