How To Run A Website Audit And Lift Your Rankings
Summarise this blog
Key Takeaways
- An SEO audit is a full health check on a site, covering the technical structure and the content together.
- Finding what is blocking your Google rankings is the point of it, and fixing those things is what answers both the algorithm and the person reading.
- Checking speed, mobile rendering, broken links, content quality and backlinks on a regular cycle keeps a site competitive.
- Drawing organic visits and holding a first-page position follow from that, and they hold over time rather than spiking.
- Running the check often enough is what separates a site that keeps its rankings from one that quietly loses them.
Competing in marketing now turns on more than who has the better approach. It turns on how quickly and how accurately you handle SEO, because every brand wants its site sitting near the top of Google’s first page to give customers the best chance of clicking through.
SEO, or search engine optimisation, has an enormous number of moving parts. Ask anyone what SEO actually involves and few could list all of it, which is how important details get missed without anyone intending to, and how it becomes hard to tell which work is returning results and which still needs attention.
That is what an SEO audit is for. Think of it as clearing the dust off a site so it can show up properly in the search results again. What follows covers what an SEO audit is, the steps involved, and how to run one on your own site.
Table of Contents
What An SEO Audit Is
An SEO audit is the process of checking how a site is performing by finding the factors that may be affecting its rankings, across both the technical structure and the content, then improving them steadily so the site reads well to Google and to the people using it, and so organic search brings more visits.
In 2026 an SEO audit also covers getting the data structure ready for AI search, which is generative engine optimisation, so AI systems can pull information off the site and answer users directly in AI Overviews.
Put simply, an SEO audit, or site audit, is the equivalent of a physical examination. It shows which parts need repair, and it locates the problem at its root rather than at the symptom. You can run one whenever it suits you, and a good number of the tools cost nothing to start with.
Which Sites Need An SEO Audit
- Sites that are hard to find, even on a search for a directly relevant keyword.
- Sites with pages that once held a first-page position and have slipped down and out of the results over time.
- Sites producing content that is not ranking.
- Sites facing more competitors in the sector, and competitors performing better.
- Sites without keywords of sufficient potential, whether the competition is too high, the search volume too low, or the keyword unrelated to the content being produced.
- Sites where the content elements are not right, such as poor UX and UI, low page speed, or broken links.
- Sites that have never had an audit backlink pass done to check for dead or spam links.
How often to run one
- Small sites, blogs and SMEs: an SEO audit at least every 6 months.
- Large sites and ecommerce: analyse site web seo work, or a website audit, every 1 to 3 months as standard.
- After a major rebuild, a site migration or a redesign: a technical SEO audit immediately, both before and after the new pages go live, so rankings do not drop.
The SEO Audit Checklist For 2026 In Eight Steps
There are as many ways to run an SEO audit as there are to do SEO. These are the eight main checks for site health.
1. Run one version of the domain URL
Google can index a site under several versions of the same URL, for example:
- http://domainname.com
- https://domainname.com
- http://www.domainname.com
- https://www.domainname.com
Several live versions of a domain rarely does a site any good, because the statistics split apart even though it is one site. A site Google reads as high quality runs one version of the domain name, so pick which form is the primary link, https://domainname.com or https://www.domainname.com. There is no SEO difference between a site with www and one without, and a modern site does not need www in front of the domain.
Then redirect the remaining URLs to the primary one, so whichever URL someone types, they land on the single primary version.
2. Make sure the site renders on every device
A good site does not only render on the desktop. With mobile now the primary device for most people, the pages have to work there too. To check whether a site meets the mobile-friendly standard, use Lighthouse.
3. Check the page load speed score
Page speed is one of the main factors affecting SEO rankings. Research published by Google found that 53% of mobile site visits are abandoned where a page takes longer than 3 seconds to load.
There are two ways to check a site’s speed:
- Open it on a real mobile device. The load should take no longer than 3 seconds.
- Run it through PageSpeed Insights, where the mobile score should come in at 60 or above.
4. Check Core Web Vitals
Core Web Vitals are the metrics that measure user experience on a site, and they carry weight in SEO rankings. You can analyse site web seo performance for these in Google Search Console, under the Core Web Vitals heading on the left, which shows how many URLs are good, how many are poor, and how many need improvement. A site should be aiming for as many good URLs as possible.
5. Check for 404 Page Not Found errors
A 404 Page Not Found is a page Google’s bot has previously crawled or indexed, and cannot find on returning. The usual causes are a URL that was changed without a redirect, or a page deleted by accident.
A good site should carry no 404 pages, particularly where the page in question previously held a first-page position on Google. Check for them directly in Google Search Console by clicking through to coverage and selecting the error category, then fix them with a redirect straight away.
6. Check on-page SEO
On-page SEO means adjusting the pages of a site to meet the criteria Google sets, and the detail runs deeper than anyone can count. Some elements are essential and others optional. A page with a real chance of ranking carries these six:
- Page title
- Meta description
- A short, tight, memorable URL
- Images with alt text
- The keyword in the H1
- Keywords spread through the content at a density that is neither too heavy nor too light, judged against the length of the content
Checking all six means opening each page and looking, because a site audit of on-page SEO on a Thai-language site is not yet supported by any tool that does the job properly.
Check the number of quality backlinks
A backlink is a link from another site pointing back to yours. It signals to Google that other sites accept your content, which adds to your score in the algorithm and improves the chance of ranking higher.
An audit backlink pass matters a great deal, because the focus has to be on quality rather than volume. Where the sites linking back are junk or pirate sites, Google may read your site as low quality, and it can be dropped from the search results altogether.
Before going looking for backlinks to add to your score, understand what a quality backlink looks like.
- It comes from a site whose content relates to the main keyword on your site.
- That site draws at least 50 clicks a month.
- The link uses anchor text that is either the exact term or closely related to the main keyword on your site.
- It sits inside the content, which scores higher than a link in a sidebar or a footer.
- The page carrying it holds no links out to other sites targeting the same main keyword as yours.
- It is a do-follow link.
- It sits towards the top of the content, which scores higher than one further down.
- Even a no-follow link from a credible site earns a score with Google, provided people click it through to your site.
With those conditions understood, check the backlinks you already have against them, then count how many pass. Two platforms handle backlink checking: Ahrefs and Ubersuggest.
SEO audit tools for an audit backlink pass, at no cost and paid
- Google Search Console (no cost)
- Ahrefs (trial version and some tools at no cost, plus paid plans)
- Ubersuggest (a no-cost version with a daily usage limit)
8. Check the schema markup
Schema markup is the code that tells Google and AI systems what the content on a page actually is, whether an article, a product, a review or an FAQ. A good site audit checks that the important pages carry correct schema markup, which improves the chance of appearing as a rich result on Google Search, with review stars, prices or image slides, and that lifts click-through rate substantially.
Where To Get An SEO Audit Done
If running the checks yourself looks complicated, or there is not enough time to do it properly, SEO agency work from Primal covers it. Our SEO audit capability examines the SEO structure on your site specifically, with recommendations and hands-on changes for better SEO results, and improvements that make the site easier to find on Google.
The SEO audit capability covers:
- Raising the site’s usability score and how SEO-friendly it reads
- Recommendations on the length of HTML title tags, site descriptions that may be incomplete, and H1 usage
- Reporting on content quality, including page content that may be duplicated
- Identifying the priorities worth focusing on, and how keywords are used
- Summarising the overall picture of the improvements and changes to make
- Recommendations on how internal links should be prioritised
- Work to analyse site web seo performance and improve page load speed
- An audit backlink pass, raising the credibility score of your site
When you are planning how to improve a site, the technical SEO check is one of the first steps and not one to skip, because it tells you what can still be improved or developed before you can expect better positions in the search results. For an SEO audit from specialists, an SEO agency conversation with Primal is the place to start.
Frequently asked questions about running an SEO audit (FAQs)
Q: How does an SEO audit differ from doing SEO?
A: They play different roles. An SEO audit is the stage where you check the site and identify the problems, the things that are wrong or need improving. Doing SEO is the stage where you act and plan, producing content or building backlinks. An SEO audit is the doctor diagnosing the condition, before treatment gets planned.
Q: Does a brand new site with no visits yet need an SEO audit?
A: Very much so. Running an SEO audit from the start checks that the technical structure and the systems behind the site are sound and free of errors such as broken links, slow pages, or a URL structure Google struggles with, so the site is ready to rank the moment content starts going up.
Q: If a site already ranks on Google’s first page, is an SEO audit still needed?
A: Yes. Google’s algorithm updates regularly, and user behaviour and competitors keep moving. A regular SEO audit stops a sudden drop and holds the first-page position over time.
Q: In an SEO audit, does technical SEO or on-page SEO matter more?
A: They matter together. Technical SEO is the foundation of the house. Where the technical structure has problems, Google’s bot cannot crawl the pages, and however good the on-page SEO or the writing, the site will not rank well.
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