Free Developer Tools

Tools for Web Professionals

Practical tools built for developers and site owners. Free to use, no signup required for core features.

Free

SchemaKit

Validate JSON & XML data against schemas instantly. Generate schemas from plain English with AI on the Pro plan.

  • JSON & XML validation
  • AI schema generation (Pro)
  • Validation history (Pro)
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Free

Core Web Vitals Analyzer

Enter any URL and get a full breakdown of LCP, CLS, FCP, TTFB, and TBT scores with actionable fix recommendations.

  • PageSpeed score breakdown
  • Per-metric fix checklist
  • PDF report export (Pro)
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Coming Soon

Website Speed Monitor

Monitor your site's performance weekly and get alerts when speed scores drop below your threshold.

  • Weekly automated scans
  • Regression alerts
  • Multi-site dashboard (Pro)
Not Available Yet

More tools are in development. Built by SanganiWeb.