Free Online SEO Checker for On-Page Audits
Analyze a webpage's on-page SEO health with the UtiliKit SEO Analyzer. The tool examines visible HTML signals that are easy to miss during publishing: title tags, meta descriptions, heading structure, image alt text, canonical URLs, schema markup, social previews, page copy, and link patterns.
Enter a URL for a live-page check, or paste HTML when a site blocks browser-based fetching. The score is designed as an editorial and technical checklist, not as a promise of rankings. It does not crawl full sites, measure backlinks, inspect server logs, or collect real Core Web Vitals field data.
What We Analyze
🔍 Title Tag (15% weight)
The title tag is crucial for rankings and click-through rates. We check for presence and optimal length (50-60 characters).
📝 Meta Description (12%)
Meta descriptions influence click-through rates from search results. We verify presence and check for optimal length (150-160 characters).
🏗️ H1 Heading (12%)
Every page should have exactly one H1 heading. We check for presence and flag pages with missing or multiple H1 tags.
🖼️ Image Alt Text (10%)
Alt text helps search engines understand images and improves accessibility. We count images with missing alt attributes.
📏 Content Length (10%)
Thin content often struggles to rank. We analyze word count and flag pages with fewer than 300-500 words.
🔗 Internal Links (5%)
Internal links help search engines discover content. We count internal vs. external links and flag pages with insufficient linking.
Additional Checks
- Heading Structure (8%): Proper heading hierarchy (H1 → H2 → H3) helps search engines understand content organization.
- Canonical URL (8%): Canonical tags prevent duplicate content issues.
- Mobile Viewport (8%): The viewport meta tag is essential for mobile-friendly pages.
- Open Graph Tags (7%): OG tags control how your pages appear when shared on social media.
- Language Attribute (5%): The lang attribute helps search engines serve your content to the right audience.