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Website SEO Checker

A full single-page SEO report — score plus on-page, indexability and performance checks.

Free · no account · results observed directly from the page.

Free Website SEO Checker — audit any page and get an SEO score

The Website SEO Checker is a free SEO checker and on-page SEO checker that runs a complete single-page SEO audit in seconds. Enter a URL — and, optionally, a target keyword — and the tool fetches your live page, evaluates every important on-page signal, and returns an overall SEO score from 0 to 100 alongside a clear, sectioned list of pass, warning and fail checks. Because every value is observed directly from your page, you get an honest, evidence-based website SEO analysis you can act on immediately.

What a website SEO checker is

A website SEO checker is a diagnostic tool that reads the public HTML of a page and grades it against proven search-engine optimisation best practices. Instead of manually inspecting your <head>, counting headings, or checking whether your page is indexable, the checker does it all at once and hands you a prioritised SEO report. It is the fastest way to check website SEO health, spot what is holding a page back, and confirm your fixes actually landed — all as a free SEO analysis with no signup.

How the SEO checker works

Running a full on-page audit takes three simple steps:

  1. Enter your URL and an optional keyword. Paste any public web page address, and if you want keyword-level insight, add the target keyword you are trying to rank for.
  2. We analyse the page. The tool fetches your live HTML and evaluates every on-page factor directly from the source — nothing is guessed or estimated.
  3. You get a scored report. Each section returns pass, warning or fail checks, and everything rolls up into a single 0–100 SEO score so you know what to fix first.

What on-page SEO factors it audits

The checker groups its findings into clear sections so a long report stays easy to scan:

Common SEO

Audits the foundational tags in your <head>: the title tag, meta description, canonical URL, viewport, character set, and your Open Graph social tags. These shape how your page appears and behaves in search and when shared.

Headings

Confirms your page has exactly one H1 and a sensible structure of H2 sections. A clear heading hierarchy helps search engines understand your content and improves accessibility for readers.

Content

Measures word count so you can judge whether a page has enough depth to be competitive, and checks that images carry descriptive alt text — important for both accessibility and image search.

Links

Counts your internal and external links. Healthy internal linking spreads authority across your site and helps crawlers discover pages, while relevant external links add context and credibility.

Indexability

Verifies the page can actually be found and indexed: it checks for a stray noindex, confirms HTTPS, and looks at robots.txt, your sitemap and any structured data present. A single indexing mistake can quietly remove a page from Google.

Performance

Reviews server response time, total page size and whether compression is enabled — signals that affect both user experience and how efficiently your page is crawled. For a deeper speed profile, pair this with our Page Speed Test.

How the SEO score is calculated

The SEO score is deterministic: it is derived entirely from the individual checks above, never invented by an AI. Each check resolves to a pass, warning or fail, those outcomes are weighted by importance, and the result is combined into a single number from 0 to 100. Because the score is computed only from what is observed on the page, the same URL will always return the same score until you actually change the page — so when your number goes up, you know it reflects a real improvement.

Why regular SEO audits matter

Pages drift over time. A template change can drop a canonical, a plugin can inject a noindex, or a redesign can bloat your page size and slow response times. Running a regular SEO audit catches these regressions early, before they erode rankings and traffic. A quick free SEO analysis after every publish — and a periodic review of your key pages — is one of the highest-impact habits in on-page SEO.

How to use the target-keyword analysis

When you supply a target keyword, the checker adds keyword-specific checks on top of the standard audit. It confirms whether your keyword appears in the title, meta description, H1 and URL, and it reports your keyword density so you can see whether the term is used naturally or over-optimised. Use it to align a page with the phrase you want to rank for without keyword stuffing. To go deeper on term frequency across the whole page, follow up with our Keyword Density Checker.

On-page vs off-page SEO

On-page SEO covers everything the tool can measure directly on the page — titles, meta tags, headings, content, links, structured data and performance. Off-page SEO covers external signals such as backlinks and Domain Authority that live outside your page. Those off-page metrics require a connected data provider; when no provider is connected, the report marks them as unavailable rather than fabricating a number. This website SEO checker focuses on the on-page factors you fully control, which is where most quick wins live.

On-page SEO best-practices checklist

  • Write a unique title tag with your primary keyword near the front.
  • Add a persuasive meta description that earns the click.
  • Use exactly one H1 and structure the rest with logical H2 and H3 headings.
  • Give the page enough depth — a healthy word count for the topic — and add descriptive image alt text.
  • Include relevant internal links to spread authority and aid discovery.
  • Declare a self-referencing canonical and make sure the page is not accidentally set to noindex.
  • Serve over HTTPS, enable compression, and keep page size and response time low.

Common issues the SEO checker finds

  • Missing or duplicate title tags and meta descriptions.
  • Multiple H1 tags or no H1 at all.
  • An accidental noindex blocking the page from search.
  • A missing or incorrect canonical URL causing duplicate-content confusion.
  • Images without alt text and thin content with a low word count.
  • No compression, oversized pages, or slow server response times.
  • Missing structured data, sitemap or a misconfigured robots.txt.

Ready to tighten things up? Start by fixing your <head> with our free Meta Tags Analyzer, refine your term usage with the Keyword Density Checker, and benchmark load times with the Page Speed Test — then re-run this website SEO checker to watch your SEO score climb.

Frequently asked questions

What is a website SEO checker?

A website SEO checker is a free tool that fetches a single web page and audits it against dozens of on-page SEO best practices — title tag, meta description, canonical, headings, word count, image alt text, links, indexability and performance. It then gives you an overall SEO score from 0 to 100 and a sectioned list of pass, warning and fail checks, so you know exactly what to fix to improve your search rankings.

How is the SEO score calculated?

The SEO score is fully deterministic — it is computed directly from the individual checks the tool runs, not guessed by an AI. Each check contributes a pass, warning or fail result, and those results are weighted and combined into a single 0–100 score. Because it is based only on what is observed on the page, the same URL always produces the same score until you actually change the page.

Is this SEO audit tool free?

Yes. The website SEO checker is completely free with no signup required. Enter any public URL, add an optional target keyword, and get an instant on-page SEO report. Every value in the report is observed directly from your live page — nothing is invented or estimated.

What is the difference between on-page and off-page SEO?

On-page SEO covers everything on the page itself — titles, meta tags, headings, content, internal links, structured data and performance — all of which this tool measures directly. Off-page SEO covers external signals such as backlinks and Domain Authority. Those off-page metrics require a connected data provider and are never fabricated; if no provider is connected, the report simply reports them as unavailable rather than guessing.

How often should I run an SEO audit?

Run a website SEO analysis whenever you publish or update a page, and re-run it after making fixes to confirm each check now passes. For active sites, a monthly on-page SEO audit of your most important pages is a good rhythm to catch regressions like a stray noindex, a broken canonical or a missing meta description before they cost you traffic.

More free tools

Meta Tags Analyzer Title, description, canonical, robots and social tags — with length checks. Keyword Density Checker Top words and 2–3 word phrases with their frequency and density. Header Tags Checker The full H1–H6 outline, with multiple-H1 and missing-H1 checks. Link Analyzer Counts internal vs external links, flags nofollow, and checks for broken links. Structured Data Checker Detects JSON-LD, Microdata and RDFa, and lists the schema.org types found. Provider Long Tail Keyword Research Discover long-tail keyword ideas for a seed keyword. Reads from a keyword data provider — never invented.