Website Checker
Website checker checks 50+ SEO metrics and does In-Depth analysis of your website. Get the SEO score of your website. Get suggestions to improve SEO.
Free Website SEO Checker & Comprehensive Audit Tool
Analyze over 50 technical, on-page, and architectural ranking signals in seconds. Get an instant health score and prioritized fixes.
Quick Answer & Overview
A website checker performs a full on-page technical SEO audit, analyzing titles, descriptions, headings, image alt attributes, page load speeds, and mobile compatibility to identify ranking bottlenecks.
Enter Your Webpage URL
Provide your root domain or specific landing page address (e.g. https://yourwebsite.com) into the audit field.
Run Multi-Vector Technical Scan
Our crawler inspects meta tags, heading hierarchies, image alt tags, JSON-LD schema, security headers, and text ratio.
Review Your Overall SEO Score
Examine pass/fail statuses, warning alerts, and detailed diagnostic explanations categorized by urgency.
Apply Actionable On-Page Fixes
Follow prioritized recommendations to eliminate crawl traps, enhance mobile accessibility, and climb search rankings.
Quick Answer: What is a Website SEO Checker?
A Website SEO Checker is an automated auditing tool that diagnoses on-page, architectural, and technical ranking factors for any live URL. It simulates search engine bot behavior by evaluating meta tags, heading hierarchies (H1/H2), image alt attributes, text-to-code ratios, mobile viewport readiness, HTTPS encryption, and structured data markup, delivering a comprehensive health score and prioritized checklist to boost Google organic rankings.
Free Website SEO Checker vs. Commercial Audit Platforms
See how SmallSEO.tools delivers enterprise-grade technical checks directly in your browser without paywalls or subscriptions:
| Audit Feature | SmallSEO.tools | SEOptimer | Woorank | Screaming Frog |
|---|---|---|---|---|
| Cost & Pricing | 100% Free Forever | $19 - $59/mo | $89.99/mo | $259/year |
| No Sign-Up Required | Yes (Instant) | Limited 1 Scan | Requires Email | Requires Desktop App |
| On-Page Meta & Heading Scan | Comprehensive | Comprehensive | Comprehensive | Comprehensive |
| JSON-LD Schema Detection | Included | Included | Included | Included |
| Mobile Viewport & Accessibility | Full Validation | Basic | Basic | Config Dependent |
Core On-Page SEO Ranking Factors Inspected
Meta Tags & Headings
Validates that your title tag is within 30–65 characters, meta description is within 150–160 characters, and only one H1 tag is used with a logical heading sequence (H2, H3).
Content & Word Count
Calculates total visible copy, text-to-code ratio, and checks that images possess descriptive alt attributes to avoid algorithmic thin content and accessibility penalties.
Crawlability & Schema
Ensures canonical tags prevent duplicate URL penalties, robots directives permit search indexing, and Schema.org JSON-LD scripts are embedded for Google rich snippets.
Security & Mobile Readiness
Confirms valid HTTPS SSL configuration, Gzip/Brotli compression headers for fast page rendering, and standard responsive viewport tags for Google Mobile-First indexing.
Frequently Asked Questions
What is a Website SEO Checker?
A Website SEO Checker is an online technical audit utility that inspects your webpage code to assess compliance with search engine ranking guidelines. It tests title tags, meta descriptions, heading structures, image accessibility, SSL/HTTPS certificates, mobile viewport tags, and structured data schemas.
How is the website SEO score calculated?
Our audit engine evaluates 20+ core on-page parameters categorized into Meta Health, Content Quality, Crawlability, and Security. Each test is assigned a pass, warning, or fail status, which is aggregated into an overall health percentage score from 0% to 100%.
Why are H1/H2 tags and image alt attributes crucial for SEO?
Search engine bots and AI algorithms rely on H1 and H2 heading hierarchies to map your content topic and subtopics. Image alt tags provide textual context for visual assets, allowing them to rank in Google Images while ensuring accessibility compliance.
Does this tool check for JSON-LD structured data and schema?
Yes. The scanner checks whether your page includes valid application/ld+json script tags, which Google and AI search engines require for rich snippets, FAQs, breadcrumbs, and Knowledge Graph indexing.
How does SmallSEO.tools compare to paid audit tools like Ahrefs or SEOptimer?
Unlike enterprise tools that require monthly subscriptions or credit card sign-ups, SmallSEO.tools delivers instant on-page technical audits 100% free with no account registration, no daily scan quotas, and immediate results in your browser.
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