Free H1 Tag Checker
Detect missing, duplicate or multiple H1 tags and review your H2 outline for topical clarity. Free, instant, no account needed.
Stop fixing by hand
SEOApex fixes this — and writes a ranking article every day.
Daily SEO + AI-search articles, hosted blog, Search Console insights and AI prompt tracking. 14-day free trial, cancel anytime.
More free tools
AI Crawlability Checker
See whether GPTBot, ClaudeBot, PerplexityBot and Google-Extended are allowed in your robots.txt, and whether you publish an llms.txt.
Robots.txt Checker
Fetch and validate your robots.txt: blocked search bots, disallow-all mistakes, sitemap declarations and AI crawler rules.
Sitemap Checker
Find your sitemap, confirm it loads, count the URLs inside and check it is declared in robots.txt.
Meta Title & Description Checker
Check title and meta description length, duplicates and missing tags on any page in seconds.
Open Graph Checker
Preview how your page looks when shared on LinkedIn, X, Slack and WhatsApp — and fix missing OG tags.
Keyword Density Checker
See the words and two-word phrases a page over- or under-uses, with density percentages.