What does a website SEO audit include?

A website SEO audit is a structured assessment of the factors that affect a site’s visibility, accessibility and performance in organic search. It normally covers technical SEO, crawling and indexing, on-page optimisation, content, internal linking, backlinks, user experience, structured data, international targeting and measurement. The outcome should be more than a list of errors: it should explain the impact of each issue, identify its likely cause and provide prioritised actions for improving search performance.

Technical SEO and website accessibility

An audit begins by checking whether search engines and users can access the website reliably. This includes reviewing the site’s technical setup, platform configuration and page delivery. Common checks include:

• HTTP status codes, including broken pages, redirect chains, redirect loops and incorrectly configured redirects.
• Server errors and pages that fail to load consistently.
• HTTPS implementation, certificate issues and insecure content.
• Mobile rendering, responsive layouts and usability on smaller screens.
• Page speed and Core Web Vitals, including loading performance, responsiveness and visual stability.
• URL structure, unnecessary parameters, duplicate URL variations and inconsistent trailing-slash or capitalisation rules.
• XML sitemaps, robots.txt directives and other crawl-management settings.
• Canonical tags and whether they accurately identify the preferred version of each page.

Technical checks should be interpreted in context. For example, a redirect is not automatically a problem if it sends users and crawlers efficiently to the correct destination. An audit should distinguish between a genuine obstacle and a configuration that is working as intended.

Crawlability and indexability

Crawlability concerns whether search engine crawlers can discover and retrieve a page. Indexability concerns whether a page is eligible to appear in search results. An audit compares the website’s intended page set with the pages that can actually be crawled and indexed.

This review looks for pages blocked by robots.txt, pages marked with noindex directives, accidental canonicalisation, orphaned pages and important content that is difficult to discover through internal links. It also checks for crawl waste caused by duplicate URLs, low-value filter combinations, session parameters or large numbers of obsolete pages.

Index coverage should be assessed against the purpose of each page. Not every URL needs to be indexed. Utility pages, duplicate versions and thin navigational variations may be deliberately excluded. The important question is whether the right pages are available to search engines and whether unwanted pages are being kept out for a clear reason.

On-page SEO elements

The audit reviews how individual pages communicate their subject and relevance. This includes:

• Page titles that accurately describe the page and distinguish it from other pages.
• Meta descriptions that summarise the page clearly and support an informed decision to visit.
• Headings that create a logical content structure.
• Relevant terms and concepts used naturally in the copy.
• Image alternative text where images convey useful information.
• Descriptive URLs that are stable, readable and relevant to the content.
• Open Graph and other sharing metadata where social distribution is important.

The review should identify missing, duplicated, misleading or over-optimised elements. It should not recommend inserting keywords mechanically. Search engines assess meaning and usefulness across the page, so on-page improvements should make the content clearer for people as well as easier to interpret algorithmically.

Content quality and search intent

A content audit assesses whether each important page provides a useful, accurate and sufficiently complete response to the needs of its intended audience. It considers search intent, topical coverage, depth, clarity, originality, freshness and alignment with the organisation’s expertise.

Typical findings include pages that target the same intent and compete with one another, content that is too thin to satisfy a query, outdated information, unsupported claims, duplicated copy and pages that no longer serve a useful purpose. The audit can also identify gaps where users are searching for information that the website does not currently cover.

Recommendations may include improving an existing page, consolidating overlapping content, removing or redirecting obsolete URLs, adding supporting information or creating a new resource. Content decisions should consider business relevance and the stage of the customer journey, not just search demand.

Internal linking and site architecture

Internal links help users navigate the site and help crawlers understand how pages relate to one another. An audit reviews whether important pages are linked from relevant, accessible locations and whether the site’s structure reflects its subject hierarchy.

Checks include broken internal links, orphaned pages, excessive click depth, links to redirected URLs, unhelpful anchor text and navigation structures that prioritise low-value pages over important commercial or informational content. A strong internal-linking structure connects broad topics with more specific supporting pages and gives users a clear route to related information.

Internal links should be added because they are useful and contextually relevant. Repeating the same exact anchor text excessively can make the structure less natural and harder to use.

Backlinks and external signals

An audit may include a review of the website’s backlink profile and referring domains. This looks at the relevance, quality and distribution of links pointing to the site, along with links that may be harmful, suspicious or associated with past activity.

The review can identify valuable links to important pages, lost links, broken backlink destinations and opportunities to strengthen the site’s authority through useful assets or legitimate digital relationships. It should not treat every low-authority link as harmful or recommend removing links solely because they do not provide measurable referral traffic. Context, relevance and natural acquisition matter more than simple link counts.

Structured data and enhanced search results

Where appropriate, an audit checks structured data that helps search engines interpret pages and potentially display enhanced search features. It verifies that the markup matches the visible content, uses the relevant schema type, contains valid properties and is not applied to pages that do not meet the requirements.

Structured data does not guarantee enhanced presentation or higher rankings. Its purpose is to provide accurate, machine-readable context. Invalid, misleading or automatically generated markup should be corrected or removed.

User experience and conversion paths

SEO audits also consider what happens after a visitor reaches the site. Poor layouts, intrusive elements, unclear navigation, inaccessible forms or slow interactions can prevent users from finding information or completing an enquiry, even when a page attracts organic traffic.

The assessment may review mobile usability, readability, navigation, calls to action, form functionality, accessibility considerations and consistency between search-result descriptions and landing-page content. These factors should be examined alongside analytics and user feedback where available. A technically valid page can still perform poorly if it does not meet visitor expectations.

International and local SEO checks

For websites serving multiple countries, regions or languages, an audit checks whether targeting signals are consistent. This may include regional URLs, language versions, hreflang implementation, translated content, currency and contact details.

For businesses with local visibility requirements, the review may also cover location pages, business details, local landing-page content and consistency across relevant business listings. The correct checks depend on the organisation’s service area and operating model.

Analytics, tracking and reporting

Reliable measurement is needed to understand whether SEO improvements are producing the intended result. An audit may review search performance data, organic landing pages, conversions, index coverage, crawl findings and technical monitoring.

Tracking should reflect meaningful business actions rather than traffic alone. The audit can identify missing conversion events, inconsistent campaign tagging, unexplained changes in organic performance and gaps between search data and on-site analytics. This helps separate a technical problem from a change in demand, competition or reporting configuration.

How audit findings are prioritised

The final report should group findings by impact, urgency, effort and dependency. Issues that prevent important pages from being crawled, indexed or used should normally be addressed before lower-impact metadata refinements. A practical action plan often separates:

• Critical issues that block access, indexing, security or important user journeys.
• High-impact improvements affecting key templates, content groups or commercial pages.
• Routine corrections that improve consistency and reduce technical debt.
• Longer-term opportunities, such as content expansion, architecture improvements or digital PR activity.

Each recommendation should identify the affected URLs or templates, explain the evidence behind the finding, state the required change and indicate how the result will be checked. After implementation, the website should be recrawled and performance monitored so that fixes can be validated rather than assumed to be complete.

A complete website SEO audit therefore combines technical evidence with content and user analysis. It establishes which pages search engines can access, whether those pages deserve visibility, how effectively the site communicates its subject and how well organic visitors are supported once they arrive. The most useful audit is one that turns these findings into a manageable implementation plan aligned with the website’s goals.