SEOpeck: SEO Checker & Website Analyzer EN

Free SEO checker for any web page: one click shows an on-page SEO score with every issue explained, Google PageSpeed, schema checks and the site's tech stack.
No account, no sign-up. It reads a page only when you click the icon (or press Alt+Shift+S).

ON-PAGE SEO SCORE AND ISSUES
• A quick 0–100 score (our own check, explained in the popup) with each problem and how to fix it
• Title and meta description length in pixels, like Google, with a search result preview
• Missing or multiple H1s and skipped heading levels
• noindex (meta tag or X-Robots-Tag), canonical tags and robots.txt blocking
• Images without alt text, mixed content, viewport, lang and Open Graph tags
• Speed of this visit (server time, LCP, CLS, page weight)
• Copy the report as Markdown or save it as a PDF report

QUICKER CHECKS
• The page's score appears on the toolbar icon after you check it
• Right-click any page or link and choose "Check this page (or link) with SEOpeck" for a full report on seopeck.com

PAGESPEED
• Google PageSpeed Insights for mobile and desktop: the four category scores, lab metrics, real-user Core Web Vitals when available, and what to fix first

SCHEMA CHECKER
• Every JSON-LD block checked against Google's required and recommended properties (Product, Article, FAQ, Breadcrumb, LocalBusiness, Recipe, Event and more), plus microdata and RDFa types

WEBSITE ANALYZER
• Technology: CMS, frameworks, JavaScript libraries, analytics, CDN, hosting, web server and security headers
• Site files: robots.txt (including which AI crawlers are blocked), XML sitemap, llms.txt and security.txt

HIGHLIGHT ON THE PAGE
• Outline images without alt text, nofollow links and H1–H6 headings right on the page

BUILT-IN TOOLS
• Screenshot editor, colour picker and screen recorder
• Side panel that stays open while you browse
• Search 340+ free SEOpeck tools, opened with the current page filled in

PRIVACY AND PERMISSIONS
Manifest V3, no remote code. Permissions: activeTab (read the page you clicked on), scripting (read-only checks in that tab), storage (favourites and colours, on your device), sidePanel and contextMenus (the right-click item). "Follow my browsing" in the side panel is optional and asked for only if you turn it on. Results stay in your browser; only the PageSpeed tab sends the page address to seopeck.com to run Google's test. No tracking, no data sold.

Free, with no paid plan. More: https://seopeck.com/page/seo-chrome-extension