SEO Audit: check your page in seconds

What is an SEO audit?

An SEO audit is the diagnostic step of search engine optimization (SEO): every factor that affects whether a page appears in search engines like Google and answer engines like ChatGPT is checked one by one. The scope splits into five components: meta and structure, content quality, technical and crawling, social and rich results, and AI readiness. It is measured with a score out of 100; the free SEO audit tool on this page produces that score with 35 checks across 5 categories and labels each check as Pass, Improve or Missing. The checks are based on requirements defined in Google's Search Central documentation; the AI readiness layer adds newer checks such as llms.txt and bot access to this classic set.

The report only covers issues you can fix in the page's own code and content; off-site signals such as your backlink profile and brand strength are outside this audit. Because the scope is limited to the page, the same work is also called on-page SEO analysis. For a business owner, the practical benefit is this: you tell your agency or developer which gap to close based on data, not guesswork. The same report shows setup errors on a newly published page and technical gaps that have built up on a page that has been live for years.

How do you run a free SEO audit?

You can run a free SEO audit with the tool on this page in three steps; no sign-up, card details or installation are needed:

1. Enter the full URL of the page you want to analyze in the Page URL field; it can be the homepage or a single service or blog page.
2. Click the Analyze button. The tool fetches the page live; along with the HTML, it reads the HTTP headers, the redirect chain and three files in the site root: robots.txt (crawl permissions), sitemap.xml (page list) and llms.txt (AI summary). The scan usually takes 5–15 seconds.
3. Jump to the relevant section from the category cards at the top of the report; each row shows a finding, a short explanation and a suggested fix.

Don't stop at a single URL, because online SEO audit tools work page by page: a clean homepage does not mean the inner pages are clean. Template differences change the result; on most sites the homepage, service pages and blog posts are generated from three separate templates. A healthy starting set is three URLs: the homepage, the service or product page that brings in the most customers, and the latest blog post.

What do the 35 checks cover?

The tool splits the 35 checks into five categories and calculates a separate sub-score for each. That way you can see at a glance which layer is weak: a page that is technically solid but missing social tags gets two different scores in two categories.

Category	Scope	Example checks
Meta and Structure	Tag and skeleton health	Title, description, H1, heading hierarchy, canonical
Content Quality	Text and image value	Word count, text/HTML ratio, alt tags, internal links
Technical and Crawling	Accessibility and speed	Response time, compression, robots.txt, sitemap, HTTPS, mixed content
Social and Rich Results	Sharing and schema	Open Graph, Twitter Card, JSON-LD types
AI Readiness	AI visibility	llms.txt, AI bot access, semantic HTML

An example makes the logic of the categories clear: the meta and structure layer looks for a 30–65 character range for the title and 70–165 for the description; a row outside the range is marked Improve. On a first audit, the layer that most often gets warnings is AI readiness, because classic SEO plugins generate Open Graph (share card tags) and sitemaps but do not cover the llms.txt file or access permissions for AI bots such as GPTBot and ClaudeBot. A missing llms.txt row does not wipe out the score; it is marked Improve, and you can generate the file in a few minutes with our free llms.txt generator.

How is the SEO score calculated, and what should it be?

The SEO score is calculated on a 0–100 scale from a weighted average of the checks: a Pass row earns full points, an Improve row half, a Missing row none, and Info rows are not counted at all. The weights are not equal either. The noindex tag and robots.txt blocks, which directly decide indexing, count 3 times, while load-bearing checks such as title, H1, HTTPS, the mobile viewport tag and structured data (JSON-LD) count 2 times. That is why a single noindex costs more points than ten small gaps.

The ranges read like this: 80 and above is healthy, 50–79 needs improvement, and below 50 needs priority attention. It is also worth knowing the limits of the score: the number summarizes on-page health and is not a ranking guarantee; Google does not see such a score, and rankings are decided by content strength and off-site signals together. The practical order is therefore: clear the critical rows marked Missing first, and once you are above 80, shift the focus to content.

How does it differ from Google's SEO tools?

The difference between Google's SEO tools and this one lies in the data source and the scope. Search Console shows Google's own index and click data, but only works for sites whose ownership you have verified, and it looks backwards. PageSpeed Insights focuses on one topic: speed and the page experience metrics known as Core Web Vitals; it does not look at meta tags or content. The tool here scans any public URL instantly, combines five layers in a single report and, since it needs no ownership verification, accepts competitor pages too.

Use the three tools in this order: get a diagnosis here, publish the fix, and confirm it is live with a new audit; then track the lasting effect in Search Console charts and dig deeper into speed findings with the PageSpeed Insights report. The time gap between them is the key point: this tool reads the page as it is right now, while Search Console reflects the version Googlebot last crawled. An instant scan is the way to confirm a fix you just published within minutes.

What issues does the audit uncover?

The most critical group it catches is visibility blockers, because a single row in this group can drop the page from the index entirely. The report separates four families of issues:

• Visibility blockers: a forgotten noindex tag, a robots.txt block, a canonical tag (which declares the preferred URL) pointing to the wrong target, missing HTTPS.
• Thin content: text under 300 words, a broken heading hierarchy, images without alt text, weak internal linking.
• Technical drag: chained redirects, uncompressed responses, response times over 2.5 seconds, bloated HTML.
• Missed opportunities: missing Open Graph and JSON-LD, a robots.txt closed to AI bots, no llms.txt.

The sneakiest finding in the field comes from the visibility group: a noindex tag carried over from the staging environment to the live site during a redesign. The page looks flawless and the design is in place, but it silently drops out of the index, and often nobody notices until the phones go quiet. The Indexability row catches exactly this accident; it is the first place to look after a theme, plugin or developer change.

What is competitor page analysis good for?

Competitor SEO analysis works directly in this tool: enter the URL of the page outranking you for your target keyword, and the report opens exactly as it does for your own page. The right level for comparison is the category scores. If your service page lags in content quality while the competitor is clearly ahead, the gap most likely lies in content depth and internal linking. If the technical scores are neck and neck, effort spent there is not a priority.

Competitor comparison has clear limits too: an on-page report does not explain the whole ranking gap. Backlink profiles, brand searches and content history do not show up in any page scan, so a competitor with a lower score can still rank above you. The right way to read it: competitor analysis shows where to focus your work, but does not on its own explain why the competitor wins.

How often should you repeat the audit?

How often to re-audit depends on how active the page is. Repeating is essential in four situations: when content or templates change, after an unexplained ranking drop, after a site migration or theme change, and whenever a new page goes live. For a regular rhythm, a practical split is monthly checks for actively edited pages that bring in customers and quarterly checks for corporate pages that rarely change. Watch one detail: if a server or CDN (content delivery network) cache is serving the old version, the fix shows up in the report late; clearing the cache and re-running the audit gives a definitive result.

A roadmap for your SEO audit

The roadmap has four steps. First, diagnosis: audit the homepage, your most valuable service page and a recent blog post; the three reports represent the health of the site's templates. Next, prioritization: start with visibility rows marked Missing, then categories scoring below 50, and close cosmetic warnings last. The third step is verification: re-audit after each fix and track the lasting effect in Search Console. The final step is comparison: audit the page that ranks above you for your target keyword and close the biggest category gap. Once the score settles above 80, the on-page homework is largely done; from there it is down to content depth and off-site signals.