Website analyzer
Free Website Analyzer: SEO, Speed and Mobile Checks
SiteScore analyses a website the way a careful reviewer would, but consistently: the same checks, the same weights and the same thresholds for every site. You see what was measured, what passed, what did not, and what could not be measured at all.
- Free to try
- No credit card required
- Results in minutes
What a website analyzer should check
A useful analysis looks at how search engines read a page, how the server responds, how the page behaves on a phone and whether visitors can act on it. SiteScore groups these into eight categories so you can see where a site is strong and where it needs work.
Eight categories, one score
Each category is scored from its own checks and combined using fixed weights. SEO carries the most weight, followed by technical, performance and content.
- SEO: titles, meta descriptions, headings, canonical tags, indexability, internal links, image alt text, structured data and social tags
- Technical: HTTPS, HTTP-to-HTTPS redirects, robots.txt, status codes, a sample of broken internal links and character encoding
- Performance: Lighthouse lab metrics from Google PageSpeed Insights, plus real-visitor Core Web Vitals where Google has enough data
- Mobile: viewport setup, zoom restrictions, fixed-width layouts and very small text
- Content: visible text, paragraph and heading structure, readability, links within the copy and near-duplicate pages
- Accessibility: alt text, form labels, link and button names, page language, heading order and ARIA references
- Local SEO: phone numbers, address signals, LocalBusiness schema and a findable contact page
- Conversion: calls to action, enquiry forms, contact visibility and trust signals — heuristic advice, labelled as such
What every finding contains
Findings are written so you can act on them without guessing. Each one includes:
- The affected page and, where relevant, the element or tag involved
- The evidence the check found, such as the missing tag or the status code returned
- A severity and a confidence label (verified, likely or advice)
- Why it matters in plain English
- How to fix it
- How to verify the fix once it is made
Measured, inferred and advised
Every finding is labelled. Verified findings come straight from the page or server response. Likely findings involve interpretation, such as whether a page has too little text. Conversion suggestions are recommendations, not defects.
When something cannot be measured
If a page times out, blocks automated requests or Google PageSpeed Insights does not return a result, that check is marked as not measured. It is left out of the score rather than counted as a failure or a pass, so a temporary error never makes a site look worse or better than it is.
How confident the score is
Each report shows crawl coverage — how many pages were analysed out of how many were discovered — and a score confidence of High, Medium or Limited. A one-page crawl or a JavaScript-only page lowers confidence instead of lowering your content score.
Where AI fits in
An AI model reads the measured findings and writes a plain-English summary and priorities. It never looks at your website and never adds findings of its own.
Who uses a website analyzer
Site owners use it to find what to fix first. Web designers and freelancers use it before handing a site to a client, and to show prospects what a redesign would fix. On the Agency plan, reports can carry your own branding.
Common questions
- Which websites can I analyse?
- Any publicly reachable website. Private, internal and local network addresses are blocked for safety, and sites that show a bot-protection page cannot be analysed.
- What does the SiteScore score mean?
- It is a weighted average of the category scores, each built from fixed checks with fixed weights. 80 and above is good, 55–79 needs attention, and below 55 is critical. Anything we could not measure is left out of the score rather than counted as a fail.
- What is the difference between a lab speed test and real-visitor data?
- Lab metrics come from a Lighthouse test run by Google PageSpeed Insights under fixed conditions. Real-visitor Core Web Vitals come from Chrome users and only exist when Google has enough traffic data for the site. SiteScore shows which one each number comes from.
- How often should I analyse a website?
- After any significant change — a redesign, a new template, a migration or a batch of new pages — and before handing a site over to a client. Running the same analysis again lets you confirm fixes, because the checks and weights stay the same.
- Can I share the analysis?
- Yes. Reports can be shared with a link or downloaded as a PDF. Agency plans can add their own logo and branding to client reports.
- Is SiteScore free?
- A free account gives you one preview audit a month with your score and top findings, and needs no payment card. A complete audit costs £4.99 one-off (no subscription), and monthly plans start at £9.99 for regular audits, monitoring and reports.
Related pages
- What is a website audit?A plain-English guide to what an audit covers and why it matters.
- Technical SEO audit guideHow to check crawling, indexing, redirects and status codes.
- How to improve website speedPractical fixes for slow pages and what to measure.
- For web designersUse analyses in client pitches and before handover.
- Free website audit toolThe full eight-category audit and how the score is built.
- Website performance checkerLighthouse lab metrics and Chrome field data where Google has it.
Paste a web address to see the full analysis for your own site.