Free Website Analyser
A website analyser examines the technical and content elements of a webpage to assess its quality, performance, and search engine readiness. RankNibbler's free website analyser focuses specifically on on-page SEO factors — the elements within your HTML that directly influence how search engines understand and rank your pages.
What Does a Website Analyser Check?
A thorough website analysis covers multiple areas that together determine how well a page is optimised for search engines. RankNibbler checks each of the following:
- Title tags — is the page title present, unique, and the right length?
- Meta descriptions — does the page have a compelling, correctly-sized description?
- Heading structure — does the page use a logical H1-H6 hierarchy?
- Image alt text — do all images have descriptive alt attributes?
- Link profile — what is the balance of internal and external links?
- Structured data — is JSON-LD Schema.org markup present?
- Social media tags — are Open Graph and Twitter Card tags configured?
- Script performance — are scripts using async or defer to avoid blocking rendering?
- Canonical URLs — is a canonical tag set to prevent duplicate content?
- Robots directives — is the page accidentally set to noindex?
- Content depth — does the page have sufficient word count and a healthy text-to-HTML ratio?
- URL quality — is the URL clean, lowercase, HTTPS, and a reasonable length?
- Favicon — is a favicon present for browser tabs and bookmarks?
- Hreflang — are language alternatives specified for multilingual sites?
How to Analyse a Website
- Go to the RankNibbler homepage.
- Paste the URL of the page you want to analyse into the input box.
- Click Analyse and wait a few seconds for the results.
- Review your SEO score out of 100 and the list of issues found.
- Explore the detailed tabs for meta tags, headings, images, links, structured data, and more.
- Use the Preview tab to see how the page renders and the Source tab to inspect the raw HTML.
Why Analyse Your Website?
Search engines rank pages based on hundreds of factors, but the ones you can control most directly are on-page elements. A website analysis helps you:
- Find hidden problems — issues like missing alt text, duplicate titles, or accidental noindex tags are invisible to visitors but damage your rankings.
- Prioritise fixes — the score and issue list show you exactly what to fix first for the biggest impact.
- Monitor over time — regular analysis catches regressions from content updates, theme changes, or plugin updates.
- Benchmark against competitors — analyse competitor pages to see what they are doing differently.
Analysing Competitor Websites
One of the most valuable uses of a website analyser is competitive research. Enter a competitor's URL into RankNibbler and you can see exactly what meta tags they use, how their headings are structured, what structured data they have, and where their on-page SEO is weak. This insight helps you identify gaps and opportunities you can exploit in your own content strategy.
Analyse any website for free. Visit the RankNibbler homepage and enter a URL to get started.