App Store Screenshot Mockup Generator
Create professional App Store and Google Play screenshot mockups online. Frame app screenshots in realistic smartphone bezels with captions and gradients.
Browser Fingerprint & Environment Inspector
Inspect your unique browser fingerprint, WebGL GPU renderer, Canvas 2D hash, AudioContext entropy, and hardware environment. 100% private client-side audit.
DNS over HTTPS (DoH) Record Lookup & Inspector
Resolve DNS records online via Cloudflare and Google DNS over HTTPS (DoH). Query A, AAAA, CNAME, MX, TXT, NS, SOA records with real-time TTL and response verification.
HTTP Security Headers Generator & Auditor
Generate and audit HTTP security headers: CSP (Content Security Policy), HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.
OpenAPI & Swagger 3.0 / 3.1 Validator & Formatter
Validate, lint, and format OpenAPI 3.0, 3.1, and Swagger 2.0 specifications online. Check required fields, endpoints, paths, components, and schema syntax in JSON or YAML.
PWA Web App Manifest Generator
Generate a Progressive Web App (PWA) manifest.json file. Configure app icons, theme colors, display modes, orientation, and generate iOS meta tags instantly.
Service Status Page Generator
Create a free, modern system status page and uptime incident dashboard. Configure operational component health and export clean standalone HTML/CSS.
Site Audit
Free, fast, and secure site audit tool for your everyday needs.
Social Proof
Free, fast, and secure social proof tool for your everyday needs.
SSL & TLS Certificate PEM Decoder
Decode and inspect X.509 SSL/TLS certificates online. Paste PEM format certificate to view Common Name, SANs, Issuer, Validity Dates, Expiry Countdown, and SHA-256 fingerprint.
Toolszu Creator
Create custom tool pages with our builder. Fast, free, and secure client-side execution in your browser.
Uptime Monitor
Free, fast, and secure uptime monitor tool for your everyday needs.
Web Analytics
Free, fast, and secure web analytics tool for your everyday needs.
Web Push Notifications
Send push notifications to visitors. Fast, free, and secure client-side execution in your browser.
Webhook Tester & HMAC Signer
Test, inspect, and validate webhook payloads client-side. Generate mock Stripe, GitHub, and Shopify webhooks with cryptographic HMAC-SHA256 signatures.
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