The On-Page SEO Analyzer at /on-page is a focused tool that combines five content and usability checks into a single analysis. It parses the target page once and runs all five checks against the same parsed data for speed and consistency.
What gets checked
- Readability — Flesch-Kincaid score, sentence length, paragraph structure, and reading level.
- Alt Text — scans every image on the page for missing, empty, or non-descriptive alt attributes.
- Structured Data — detects JSON-LD, Microdata, and RDFa markup; validates schema types and required fields.
- Social Preview — checks Open Graph and Twitter Card meta tags; shows a preview of how the page appears when shared on social media.
- Mobile Usability — viewport configuration, tap target sizing, font legibility, and horizontal scrolling issues.
How to use it
- Navigate to /on-page.
- Enter the URL of the page you want to analyze and click Analyze.
- Results appear organized by check type, each with a pass/fail summary and detailed findings.
Single-parse architecture
Unlike running each check separately, the On-Page Analyzer fetches and parses the HTML once, then executes all five checks against the same DOM tree. This means faster results and consistent data across all checks — if the page changes between requests, you will not get conflicting findings.
Tip: For a full technical and performance audit, use the
Website Audit Tool at
/audit. The On-Page Analyzer is best for quickly checking content quality and social sharing readiness.