Instant On-Page & Technical SEO Auditor

Free SEO Website Analyzer

Instantly audit any webpage URL for title tags, meta descriptions, heading structure, canonicals, Open Graph tags, image alt text, and overall technical SEO health.

100% Free Audit
No Registration Needed
15+ On-Page Checks

How Does the SEO Website Analyzer Work?

Our tool analyzes your webpage's raw HTML structure, evaluating technical tags and on-page ranking signals in 4 simple steps.

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1. Webpage Fetching

Our secure backend makes an HTTP request to your webpage, respecting SSL encryption, redirects, and robots directives without exposing your IP.

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2. DOM Parsing

We parse the raw HTML document using DOMDocument and DOMXPath, extracting essential elements like titles, meta descriptions, headings, and canonicals.

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3. On-Page Audit

Each extracted tag is evaluated against SEO best practices—checking length constraints, duplicate issues, hierarchy structures, and image alt attributes.

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4. Diagnostic Scoring

Our scoring algorithm aggregates individual audit check results into a transparent, diagnostic SEO Health Score from 0 to 100 with actionable fixes.

What On-Page SEO Checks Are Analyzed?

We inspect over 15 critical technical and on-page ranking parameters to ensure search engine crawlers can index your content effectively.

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Title & Meta Description

Ensures your primary title tag is between 30-60 characters and meta description is 120-160 characters to optimize Google search snippet visibility.

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Heading Hierarchy (H1-H6)

Audits your H1 tag uniqueness and visual heading hierarchy tree to ensure logical content structure for users and screen readers.

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Canonical & Robots Meta

Verifies self-referencing canonical URLs to prevent duplicate content penalties and flags restrictive noindex or nofollow crawler directives.

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Image ALT Text Coverage

Counts total images and flags missing alt attributes to boost web accessibility compliance and image search ranking signals.

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Viewport & Security

Confirms active SSL encryption (HTTPS) and responsive viewport meta tag declarations for full mobile device compatibility.

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Open Graph & Twitter Cards

Inspects og:title, og:image, and Twitter Card declarations to guarantee eye-catching link previews across social media platforms.

Frequently Asked Questions

Common questions regarding website audits, SEO health scores, and search engine optimization.

An SEO Website Analyzer is an online diagnostic tool that scans a webpage's source code to detect on-page optimization issues, technical errors, missing meta tags, broken link references, and visual heading hierarchy flaws.
No. Google does not publish an official single overall SEO score for websites. Our score is a diagnostic custom SEO Health Score calculated based on automated industry best practices.
The H1 tag serves as the primary headline of a webpage. Having exactly one descriptive H1 tag helps search engines identify the central subject matter of your page.
Canonical tags specify the authoritative master URL of a webpage. They prevent duplicate content issues when identical pages are accessible via different URLs or URL parameters.
We recommend running an SEO audit every time you publish new content, redesign page layouts, or notice drops in organic search traffic.