How to Do an SEO Audit: Complete Guide

Doing an SEO audit means systematically checking your website's technical setup, on-page elements and content so you can identify what is preventing it from performing well in search results. This guide walks through the process step by step, from initial crawl to prioritised action plan.

Step 1: Crawl your site

Start by getting a full picture of your pages. Crawling reveals how many pages exist, how they link together, and whether any are broken or unreachable. An automated tool such as SiteScore's free SEO audit will crawl a sample of up to 6 pages from your homepage and sitemap and check core elements automatically, which is a fast way to get an initial view before digging in manually.

Step 2: Check indexability

There is little point optimising a page that search engines cannot index. Review:

• Your robots.txt file to make sure it is not accidentally blocking important pages
• Robots meta tags and X-Robots-Tag headers on key pages
• Canonical tags, to confirm they point to the correct version of each page
• Your XML sitemap to check it lists your real, current pages

Step 3: Review on-page SEO elements

For your most important pages, check:

• Meta titles are unique, descriptive and reasonably concise
• Meta descriptions are unique and give a genuine reason to click
• Headings follow a logical order, with one clear H1 per page
• Internal links connect related pages and use descriptive anchor text
• Structured data is present where relevant, such as for articles or products

Step 4: Check technical health

Technical issues can undermine even well-written content. Look at:

• HTTPS usage across the whole site, not just some pages
• Redirects, checking for chains or loops
• HTTP status codes for key pages, which you can check with a HTTP status tool
• Page speed, since slow pages can affect both users and rankings — see our page speed tool

For a deeper dive into this area specifically, read our technical SEO audit guide.

Step 5: Assess content quality

Search engines reward content that genuinely answers what people are searching for. Ask honestly:

• Does each page answer the query it is meant to target?
• Is content unique, or duplicated across similar pages?
• Are there obvious gaps where you have no content at all for topics your customers ask about?
• Are pages kept reasonably current, or visibly out of date?

Step 6: Check mobile and accessibility basics

Most search traffic happens on mobile devices, so confirm your pages have a proper mobile viewport configuration, that text is legible without zooming, and that basic accessibility signals like image alt text are in place. These issues often get missed because they do not show up on a desktop screen.

Step 7: Prioritise and fix

Once you have a list of issues, sort them roughly into:

• Quick wins: missing titles or descriptions, broken links, missing alt text
• Medium effort: restructuring headings, cleaning up redirects, improving internal linking
• Larger projects: site speed improvements, content rewrites, migrations

Fix the quick wins first so you see progress, then work through the rest based on which pages matter most for your business.

Step 8: Re-check regularly

An SEO audit is not a one-off task. Search engines' expectations and your site both change over time. Running a free website audit every few months, or after any significant site change, helps you catch new issues before they affect performance. Our SEO audit checklist sets out the full list of items worth checking in each pass. ## How long an SEO audit takes

The time required depends heavily on site size and how deep you go. A small site with a handful of pages might take an afternoon to review thoroughly, while a large site with hundreds of pages could take days of manual review even with automated tools handling the initial crawl. Set realistic expectations before starting, and consider auditing your most important pages first rather than trying to cover everything at once.

Tools that help

Beyond a general audit tool, a few specific checks are worth running individually:

• A meta title tool to check length and clarity of titles across pages
• A meta description tool to review descriptions for uniqueness and appeal
• A robots.txt checker to confirm you are not accidentally blocking pages
• A sitemap checker to validate your XML sitemap is accurate
• A HTTP status tool to spot unexpected redirects or errors

Common pitfalls to avoid

• Treating an SEO audit as a one-time task rather than an ongoing habit
• Fixing technical issues but never reviewing content quality
• Focusing only on pages that already rank, while ignoring pages that could rank but currently have no visibility at all
• Making multiple changes at once without tracking which fix caused which improvement

Next step

Get a clear, prioritised list of issues by running SiteScore's free SEO audit on your site now.