SEO Health Checker - On-Page SEO Audit 作成者: Alimam Miya

Stop running heavy, slow crawlers for simple page checks. SEO Health Checker is a high-performance Firefox extension that provides a 360-degree view of any URL’s on-page SEO in a single click.

From metadata validation to complex schema detection, this tool transforms your browser into a professional SEO workstation. It’s built for SEO specialists, web developers, and content growth teams who need data, not noise.

🔍 Comprehensive On-Page Audit
Get a real-time breakdown of the most critical ranking factors:
Smart Metadata Review: Live validation of Title and Description tags against current search engine character limits.
Visual Heading Hierarchy: A clear map of H1–H6 tags with immediate alerts for structural errors or missing H1s.
Schema & Structured Data: Automatically detect JSON-LD. Preview your markup or copy it to your clipboard instantly.
Link Profiling: Distinguish between internal, external, dofollow, and nofollow links with a live on-page highlighter.
Image Health: Identify SEO-damaging images that are missing Alt text or optimized descriptions.

🚀 Pro-Level Optimization Tools
Go beyond the basics with advanced analysis features:
Keyword Intelligence: Analyze keyword density for 2–5 word phrases and verify primary keyword placement in the "Power Zones" (H1, URL, and the first 100 words).
Technical Tag Detection: Instantly find verification snippets for Google Search Console, Bing Webmaster Tools, Pinterest, and Facebook Pixel.
On-Page Highlighting: Stop hunting through code. Toggle highlights for headings and links directly on the live website.
SEO Health Score: A weighted algorithmic score (0–100) shown on the extension badge for an at-a-glance quality check.

🛡️ Privacy & Performance First
Built with the Firefox philosophy in mind:
Zero Data Leakage: Your data stays in your browser. We don't track your history or send page content to external servers.
Ultra-Lightweight: Designed to be fast and "invisible" until you need it. No background battery drain.
Dark Mode Ready: A sleek, modern UI designed for high-focus SEO audits.

Stop guessing and start optimizing. Add SEO Health Checker to Firefox today and take control of your search engine visibility.