Check how a page looks to search engines and AI crawlers.
Every result comes from code that fetches and parses the page. Nothing is guessed, and nothing about the pages you check is stored.
- GPTBotBlocked
Disallow: /
- OAI-SearchBotAllowed
- ClaudeBotAllowed
- PerplexityBotAllowed
- Google-ExtendedAllowed
- CCBotBlocked
Disallow: /
- info
ai.llms_txt.missing/llms.txt did not return a 2xx response.
The four tools
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Meta Tag & Open Graph Analyzer
Checks title, description, canonical, robots, hreflang and social cards.
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Structured Data Validator
Extracts JSON-LD, microdata and RDFa and checks types, properties and @id references.
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Headers, Robots.txt & Sitemap Checker
Follows redirects and checks HTTPS, HSTS, caching, compression, robots.txt and the sitemap.
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AI Crawler Access Checker
Shows which AI crawlers robots.txt allows, and whether content is in the raw HTML.
Guides
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AI Crawler Control Guide: Allow or Block Each Bot
A practical guide for web developers to understand what OpenAI, Perplexity, and Google crawlers do, how to allow or block them via robots.txt, and common mistakes.
Pairs with AI Crawler Access Checker
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Canonical tags: 7 common mistakes and how to fix them
A guide to the most common canonical tag mistakes and the steps to identify and fix them using Google Search documentation and RFC 6596.
Pairs with Meta Tag & Open Graph Analyzer
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Implement Product Schema in WooCommerce Without Duplicates
Use WooCommerce's built-in Product schema, customize it with filters, avoid duplicate markup, and verify results using Google's structured data tools.
Pairs with Structured Data Validator
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Optimizing for AI Overviews and AI Mode: What Google Says
What Google's own documentation says about appearing in AI Overviews and AI Mode: what still matters, what you can ignore, and how to control and measure it.
Pairs with AI Crawler Access Checker
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What Each Redirect Hop Costs You
Understand the performance cost of each redirect hop, HTTP status semantics, HSTS optimization, and how to verify your chains.
Pairs with Headers, Robots.txt & Sitemap Checker
Glossary of AI terms
47 short, sourced definitions of the AI terms that matter when you build websites: crawlers, structured outputs, MCP, AI search and security. Filled terms have a full page with a diagram or example.
Where this domain comes from
miraks.biz was the site of Mirax, a small web studio in Cheboksary, Russia, from around 2013 to 2018. It is now an independent project that keeps the same subject: building websites, and the tools that help you check them. Read more on the About page.