What Does an SEO Checker Tool Check?

A good SEO checker tool checks meta title, meta description, H1 and other heading tags. It also covers Open Graph and Twitter Card tags, canonical URL, robots meta, and structured data (schema) presence. Spindora's SEO checker tool lists these in one report, flags missing or incorrect ones, and offers fix suggestions.
Page speed and Core Web Vitals (LCP, FID, CLS) are also included in many SEO checker tools. Mobile-friendliness and image optimization (size, lazy load, alt text) can be part of the SEO checker report. Thus both on-page and technical SEO are reviewed in one "SEO check."
Broken links (404s), redirect chains, and server response times are also scanned by an SEO checker tool. By checking XML sitemap and robots.txt configuration you can see whether search engine bots are crawling your site correctly. Some tools also add security (HTTPS, mixed content) and accessibility warnings to the report.




