Generate valid Schema.org JSON-LD for the 11 rich-result types Google supports in 2026: Product, Article, FAQPage, HowTo, Recipe, Course, JobPosting, ...

Test any URL for the 2026 Core Web Vitals: INP, LCP, CLS, FCP, TTFB. Field data from Chrome User Experience ...

Probe any HTTPS URL to find out if it supports HTTP/3 and QUIC. Parses alt-svc, identifies the server software (Cloudflare, ...

Detect the CDN serving any URL: Cloudflare, Fastly, Akamai, Amazon CloudFront, Azure Front Door, BunnyCDN, KeyCDN, Vercel, Netlify, jsDelivr and ...

Design Open Graph and Twitter share-card images (1200x630 PNG) live in your browser. Six templates, Canvas preview, Facebook / LinkedIn ...

Generate an llms.txt and llms-full.txt for your site. Curated Markdown index that helps AI agents (ChatGPT, Claude, Perplexity, Gemini) find ...

Check SPF, DKIM, DMARC and BIMI records for any domain. Per-pillar parser, 12 common DKIM selectors probed, posture score and ...

Estimate the monthly and annual cost of running an AI feature on GPT-5.5, GPT-5 mini, Claude Opus 4.8 (standard + ...

Convert any JSON payload to TypeScript interfaces with inferred nested types, union arrays, optional fields, readonly support and JSON Schema ...

Generate a robots.txt that blocks the AI crawlers used by ChatGPT, Claude, Gemini, Perplexity, Meta AI, Apple Intelligence and Common ...