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Analiza aspectos escensiales SEO en una página web.Hecho en el canal de Youtube de EL JOSEO SEO Checker – Best SEO Extension by EL JOSEO Your all-in-one SEO toolkit, right in your browser. Instantly analyze any webpage and uncover the SEO signals that matter — no more digging through page source or juggling five different tools. Perfect for content creators, developers, agencies, and SEO consultants who need fast, reliable on-page audits without leaving the tab. 🔍 What can you do with it? 🎯 Core On-Page SEO — Title, meta description, canonical, robots, keywords, author, and language, all with smart character-count indicators so you know instantly if your title or description is too short, too long, or just right. 🎯 Headings Explorer — See your full H1–H6 structure in document order, exactly as Google crawls it, plus a quick-glance summary to spot missing or duplicated H1s at once. 🎯 Social Preview — Check how your page will actually look when shared on Facebook and Twitter/X, with live Open Graph and Twitter Card previews. 🎯 Deep Analysis — Word count, internal vs. external links, images missing ALT text, structured data (Schema/JSON-LD) detection with one-click validation, hreflang tags, and automatic detection of the technologies powering the site (CMS, JS frameworks, analytics, payment providers, and more — Wappalyzer-style). 🎯 Site Resources — Instant links to robots.txt and the sitemap, auto-detected for the current domain. 🎯 Character Counter — Perfect your meta titles and descriptions with real-time character tracking. 🎯 Keyword Concatenator — Brainstorm and generate keyword combinations in seconds, with custom separators, text case transforms, and duplicate removal. 🎯 One-Click Integrations — Jump straight into PageSpeed Insights, WebPageTest, Google's Rich Results Test, the Wayback Machine, and the Common Crawl Index — all pre-filled with the current page's URL or domain. 🎯 Built by José from EL JOSEO. Created from the EL JOSEO YouTube channel to help you learn and apply real SEO best practices, hands-on