Free SEO Checker Check Website SEO Score Instantly
Complete technical SEO audit: meta tags, headings, links, images, schema, JavaScript rendering, and AI crawler access. 14 analysis tabs, zero uploads, 100% private.
How to Check Website SEO Score for Free
Use our free SEO checker to analyze your website SEO in seconds. Enter any URL and get a complete technical SEO audit with actionable recommendations. Here's how to use this free SEO tool:
- Enter your website URL - Type your URL or paste HTML source code directly into the SEO score checker.
- Click Analyze - The SEO analysis tool scans your page for 50+ SEO factors instantly.
- Review the results - Get a detailed SEO audit across 14 categories with errors, warnings, and recommendations.
- Fix critical issues - Prioritize by severity. Each issue explains what's wrong and why it matters.
- Export your report - Download as CSV, JSON, or a plain-text report for client delivery.
What Our Free SEO Checker Analyzes
This technical SEO audit tool checks every critical SEO element on your website:
Meta Tag Analysis
- Title Tag Checker - Detects missing, too short, or too long title tags (optimal: 30-60 characters)
- Meta Description Checker - Validates meta descriptions (optimal: 70-160 characters)
- Canonical Tag Checker - Identifies missing or incorrect canonical references
- Robots Meta Checker - Detects noindex, nofollow, and robots directives
Content Structure Analysis
- Heading Hierarchy Checker - Validates H1-H6 structure and detects multiple H1 tags
- Word Count Analysis - Measures content length for SEO benchmarking
- Content Quality Check - Identifies thin content and missing sections
Link & Image Analysis
- Internal Link Checker - Counts and categorizes internal vs external links
- Image Alt Text Checker - Finds images missing alt attributes
- Broken Link Detector - Identifies dead links that hurt SEO
Structured Data & Social
- Schema Markup Validator - Extracts and validates JSON-LD structured data
- Open Graph Checker - Validates Facebook/social sharing tags
- Twitter Card Checker - Validates Twitter-specific meta tags
JavaScript SEO Analysis (Unique Feature)
- JavaScript Rendering Detector - Auto-detects CSR, SSR, SSG, or ISR rendering strategy
- Framework Detection - Identifies Next.js, Nuxt.js, Remix, Gatsby, Astro, SvelteKit
- Raw vs Rendered HTML Diff - Shows exactly what JavaScript adds or changes
- SEO Impact Scoring - Rates the severity of rendering issues on a 5-level scale
AI Search Optimization (Unique Feature)
- AI Crawler Access Checker - Tests if GPTBot, ClaudeBot, PerplexityBot can access your content
- llms.txt Validator - Validates your AI visibility file exists and is correctly formatted
- AI Visibility Score - Measures how accessible your content is to AI search engines
Why Choose Our Free SEO Checker?
Most SEO audit tools require accounts, uploads, or expensive subscriptions. Our free SEO checker is different:
- 100% Free - No hidden fees, no premium tier, no credit card required
- No Uploads - Everything runs in your browser. Your data never leaves your device.
- Instant Results - Get your complete SEO audit in seconds, not minutes
- 14 Analysis Categories - More comprehensive than most paid tools
- JavaScript SEO - The only free tool that detects rendering strategy and framework issues
- AI Crawler Analysis - Check if AI search engines can see your content
- Export Reports - Download CSV, JSON, or plain-text reports for clients
Who Uses This Free SEO Tool?
- SEO Agencies - Quick client audits and prospect research
- Freelancers - Technical SEO audits without expensive tools
- Website Owners - Check your own site's SEO health
- Developers - Verify JavaScript rendering and framework issues
- Content Marketers - Ensure content is optimized for search and AI
- E-commerce Stores - Product page SEO validation
Related Free SEO Tools by Clienvora
Explore our complete suite of free SEO tools:
- Robots.txt Checker - Validate and test your robots.txt file
- Canonical Tag Checker - Audit rel=canonical tags across pages
- Redirect Chain Checker - Analyze redirect chains and loops
- SEO Keyword Gap Analyzer - Find keyword opportunities
Frequently Asked Questions
What is a free SEO checker?
A free SEO checker is an online tool that analyzes your website for search engine optimization issues. It checks meta tags, heading structure, internal links, image alt text, structured data, and other technical SEO elements. Our free SEO checker runs entirely in your browser - no uploads, no sign-ups, 100% private.
How to check website SEO score for free?
Enter your website URL into the SEO checker tool and click Analyze. The tool will scan your page for 50+ SEO factors including title tags, meta descriptions, heading hierarchy, internal links, image alt text, schema markup, and JavaScript rendering issues. You get a complete SEO audit report instantly.
What does an SEO checker analyze?
Our SEO checker analyzes: title tags, meta descriptions, canonical tags, robots directives, heading hierarchy (H1-H6), internal and external links, image alt text, JSON-LD schema markup, Open Graph tags, Twitter Card tags, JavaScript rendering strategy, framework detection (Next.js, Nuxt, Remix), AI crawler access, and llms.txt validation.
Is this SEO tool really free?
Yes, this SEO checker is completely free with no limits. There are no hidden fees, no required sign-ups, and no data uploads. All analysis runs locally in your browser. Your data never leaves your device.
What is JavaScript rendering in SEO?
JavaScript rendering refers to how search engines process pages that use JavaScript frameworks like React, Vue, or Angular. The SEO checker detects whether your page uses Client-Side Rendering (CSR), Server-Side Rendering (SSR), Static Site Generation (SSG), or Incremental Static Regeneration (ISR). This is critical because search engines and AI crawlers may not see content that requires JavaScript to render.
What is AI crawler access checking?
AI crawler access checking verifies whether AI assistants like ChatGPT (GPTBot), Claude (ClaudeBot), and Perplexity (PerplexityBot) can access and read your content. AI crawlers do not execute JavaScript, so pages using Client-Side Rendering may be invisible to AI search engines.
What is llms.txt and why does it matter?
llms.txt is an emerging standard file that helps AI assistants understand your website. It provides a structured summary of your organization, key pages, and content. Our tool validates whether your llms.txt exists and is correctly formatted for maximum AI visibility.
How to improve website SEO score?
To improve your SEO score: 1) Fix missing or poorly sized title tags (30-60 characters). 2) Add unique meta descriptions (70-160 characters). 3) Use only one H1 tag per page. 4) Add alt text to all images. 5) Fix broken internal links. 6) Add JSON-LD schema markup. 7) Ensure important content is server-rendered for AI crawlers. 8) Create an llms.txt file.
What is the difference between SEO checker and SEO audit?
An SEO checker typically analyzes a single page for specific issues. An SEO audit is a comprehensive analysis of your entire website's technical SEO health. Our tool provides both - single-page analysis with detailed breakdowns across 14 categories.
How often should I run an SEO check?
Run an SEO check monthly, after any website changes, before/after migrations, and when you notice traffic drops. For JavaScript-heavy sites, check after any framework or dependency updates that might affect rendering.