Clarity for your website.
Practical engineering tools.
Verify search crawler accessibility, Core Web Vitals, structured markup, and AI search readiness. Independent, lightweight, and built for both founders and developers.
Website Check & Technical SEO Inspector
Execute an instant technical audit on any public web page. Inspects HTTP response status, Googlebot and AI bot permissions, canonical directives, structured JSON-LD data, and simulated mobile Lighthouse performance.
<meta name="robots" content="index, follow"><link rel="canonical" href="https://example.com"><script type="application/ld+json">...</script>Search & AI Crawlability Check
Verify whether ChatGPT, Perplexity, Claude, and Gemini can reach and cite your content. Audits 14 critical preconditions across Discovered, Trusted, and Welcomed signals — including live WAF direct knock to catch silent Cloudflare blocks.
User-agent: OAI-SearchBot (Allow)Direct GPTBot Knock: HTTP 200 OK/.well-known/llms.txt detectedWhat is your current website challenge?
Select your situation to see recommended diagnostics.
Recommended: Technical Indexability Audit
Ensure search engines are not blocked by accidental noindex directives, disallow rules in robots.txt, or incorrect canonical tags pointing to alternative URLs.
Run Website Checker for IndexabilityLive SERP & AI Snippet Previewer
Simulate how your page appears across Google Desktop, Google Mobile, and Generative AI answer engines like Perplexity and ChatGPT Search. Optimize length to prevent truncation.
AppWebSeo — High-End Webstudio, GEO & AI Search Engineering
Engineering-grade web development, Core Web Vitals, and Generative Engine Optimization (GEO). Fast headless architectures built for search and AI visibility.
AI Search & Crawler Directives Inspector
Understand how AI engines (ChatGPT Search, Perplexity, Google AI Overviews) discover and cite your content. Copy verified robots.txt configurations.
Googlebot
Google web search indexing and ranking discovery.
User-agent: Googlebot
Allow: /Keep fully accessible for all public pages to ensure visibility.
Core Web Vitals Threshold Guide
Google ranks pages against real-user 75th percentile Core Web Vitals. Use these authoritative thresholds to evaluate your performance scores.
How to optimize Largest Contentful Paint (LCP):
- Add fetchpriority="high" to your primary hero image in HTML.
- Deploy HTML caching at CDN edge nodes to achieve TTFB ≤ 200ms.
- Avoid lazy-loading above-the-fold images.
Use these tools from your AI agent via MCP
The same checks are available to Claude, ChatGPT, Cursor, and other MCP clients over a public, no-login Model Context Protocol endpoint — with the same fair-use limits as this page.
{
"mcpServers": {
"appwebseo": {
"type": "http",
"url": "https://www.appwebseo.com/api/mcp"
}
}
}Available tools:
website_check— technical SEO audit of one public page with prioritized findings.website_check_performance— mobile Lighthouse measurement for a scan token (separate quota).website_check_report— retrieves a stored report by token.website_check_pdf— returns the PDF action plan for a report token.website_check_email— emails the PDF report once per token.crawlability_check— AI & search crawler audit: robots.txt rules for 9 bots, direct WAF knock, llms.txt discovery.crawlability_check_report— retrieves a stored crawlability report by token.crawlability_check_pdf— returns the crawlability PDF report for a token.crawlability_check_email— emails the crawlability PDF report once per token.
Frequently Asked Questions
Are these diagnostics really 100% free with no account?
Yes. All diagnostics on AppWebSeo are completely free to use. We do not require account creation, credit cards, or email signups to run inspections or download PDF reports.
Is it safe to run audits on live production websites?
Absolutely. Our scanner uses single non-intrusive HTTP GET requests just like a browser or search engine crawler. We respect robots.txt and never flood your servers with traffic.
Why does synthetic lab performance differ from Google Search Console data?
Search Console reflects real-world 75th percentile field data (CrUX) gathered from real users over 28 days. Our lab test simulates a standardized 4G mobile device to provide instantaneous, reproducible feedback.
Can I share the audit reports with my dev agency or in-house team?
Yes. The downloadable PDF action plan and 1-click Markdown copy button are specifically formatted with clear technical evidence and prioritized remediation steps for developers.
Can AI agents use these tools?
Yes. Claude, ChatGPT, Cursor, and other MCP clients can call the same checks through our public Model Context Protocol endpoint at https://www.appwebseo.com/api/mcp — no account required, with the same fair-use limits as the web tools.