SEO Checker

Run a detailed SEO audit on any public webpage and get a weighted score based on the issues that matter most. Casper SEO Checker analyses the page itself, its crawlability and indexing setup, content structure, images, links, social metadata, structured data and technical delivery. It checks: • Page availability, HTTP status, redirects and HTTPS usage • robots.txt and sitemap availability • Meta robots and X-Robots-Tag directives • Canonical tags and canonical URL consistency • Title tags, meta descriptions, charset and viewport settings • HTML language and favicon configuration • H1 usage, heading hierarchy and empty headings • Content length, thin content, placeholder text and repeated content • Semantic HTML structure and readability issues • Image alt text, dimensions, lazy loading and modern formats • Mixed-content images and poor image filenames • Internal and external links, broken links, redirects and nofollow usage • Open Graph and Twitter/X sharing metadata • JSON-LD structured data and malformed schema markup • Compression, HTTP protocol version, HTML document size and cache headers • Potentially render-blocking scripts and connection optimisation hints Results are returned as passes, warnings, failures and informational findings, with a weighted overall score so critical SEO problems have a much greater impact than minor recommendations.