Toolbox
Web tools that just work
A curated set of fast, privacy-friendly utilities that run at the edge.
Account-backed analyzers include 3 checks per day on the Free plan. Upgrade to Pro for unlimited checks. Results are saved to your account.
Free Utilities
Quick browser-based tools with no account or API key required.
JSON Formatter
Format, validate, and minify JSON instantly.
UUID Generator
Generate v4 UUIDs in bulk with one click.
Color Converter
Convert between HEX, RGB, and HSL color formats.
Word Counter
Count words, characters, and reading time.
Internet Speed Checker
Measure approximate download speed in your browser with no account or API key.
Live Service Status
Check official live status dashboards for Microsoft, Google, Apple, AWS, Cloudflare, GitHub, and OpenAI.
Website Cyber Security Check
Start with a free HTTPS check, then unlock full website security scans, saved reports, AI fixes, and monitoring.
Email Cyber Security Check
Validate an email domain for free and inspect SPF, DKIM, DMARC, MX, and deliverability with the full checker.
Plagiarism Checker
Compare two texts privately in your browser and see their word overlap.
SEO Meta Generator
Generate title, description, canonical, and Open Graph tags for any page.
robots.txt Generator
Generate a clean robots.txt file for your website in seconds.
Sitemap Generator
Turn a list of page URLs into a ready-to-use XML sitemap.
Website services and analyzers
Estimate a new website project or run a deeper account-backed analysis.
AI Website Health Scanner
Full 0–100 health score across SSL, DNS, headers, performance, SEO, and more — with AI-prioritized fixes for premium plans.
Run a live check →WordPress Security Scanner
Scan WordPress sites for outdated core, vulnerable plugins/themes, exposed configs, XML-RPC, debug mode, and more — with AI remediation for premium plans.
Run a live check →SSL & HTTPS Analyzer
Deep TLS analysis: certificate validity, issuer & chain, TLS versions, cipher suites, HSTS, OCSP stapling, expiry, mixed content, and HTTPS redirects — with a security grade and AI remediation for premium plans.
Run a live check →HTTP Security Headers Analyzer
Analyze HTTP response headers against OWASP recommendations: HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, cross-origin isolation, and info disclosure — with a security grade and AI remediation for premium plans.
Run a live check →Website Speed Analyzer
Measure Core Web Vitals (LCP, CLS, INP), TTFB, JavaScript/CSS/image/font weight, caching, CDN usage, and compression for a 0–100 speed score — with AI optimization plans, competitor comparison, and trend history on premium plans.
Run a live check →DNS Analyzer
Retrieve and validate DNS records (A, AAAA, CNAME, MX, TXT, NS) plus SPF, DKIM, and DMARC email authentication. Detect configuration errors and propagation issues for a 0–100 health score — with AI recommendations, monitoring, alerts, and change tracking on premium plans.
Run a live check →Email Deliverability Checker
Validate SPF, DKIM, DMARC and MX records, reverse DNS, SMTP reachability, and DNS blocklist status for a 0–100 deliverability score. Premium plans add AI recommendations, monitoring, scheduled reports, and authentication guidance.
Run a live check →Website Uptime Monitoring
Monitor HTTP/HTTPS availability, SSL expiration, DNS resolution, and response time from multiple regions with a 0–100 reliability score. Premium plans add configurable intervals, email/webhook/SMS alerts, incident history, SLA reports, and REST API access.
Run a live check →Website Technology Detector
Detect the CMS, JavaScript frameworks, analytics, CDNs, web servers, hosting, advertising, security products, and third-party integrations powering any site. Premium plans add AI architecture summaries, technology change tracking, competitor comparison, and exportable reports.
Run a live check →Website Cost Estimator
Plan your next website with a transparent development and maintenance estimate from the w3nest team.
Request a quote →