SeoSignal - On-Page SEO Checker & Auditor by Tan Dijital

SeoSignal is a free on-page SEO checker and website auditor that analyzes any web page in one click.

What it checks:
- Title tag and meta description (length, presence, quality)
- Heading structure (H1-H6)
- Open Graph and Twitter Card tags for social sharing
- Structured data (Schema.org)
- Image alt text and internal/external links
- Canonical tags and robots directives
- Core Web Vitals lab metrics and a built-in accessibility check

You also get a live Google SERP preview, social media share previews and a keyword usage grader, each with clear, actionable tips on what to fix to rank higher.

Everything runs locally in your browser: private and fast, with no account and no tracking. Ideal for SEO specialists, web developers, content writers and site owners.