Online tools free and secure
Professional utilities for cybersecurity, web analysis, cryptography, and performance for developers and businesses. Free, fast, and private.
Instant audit of HTTP security headers, SSL/TLS certificates, cookies, and server leak detection.
Verify public DNS records to shield your domain against spoofing and ensure maximum inbox deliverability.
Inspect HTTP response headers, status codes, 301/302 redirects, and caching directives in real time.
Build and validate Content Security Policies to harden your web applications against XSS and clickjacking.
Measure network latency, DNS lookup, TLS handshake, TTFB, and total HTML download response time.
Simulate how your URL appears when shared across Google, X (Twitter), Facebook, LinkedIn, and WhatsApp.
Calculate SHA-256, SHA-512, and MD5 cryptographic hashes for text and local files securely in-browser.
Generate cryptographically secure passwords and passphrases in real time using the client Web Crypto API.
Decode JWT headers and payloads, inspect timestamp claims, and check token structure completely client-side.
Tools built with privacy by default
Access any utility immediately without creating accounts, entering payment details, or giving away personal data.
Generators, hashes, and tokens run locally in your browser memory. Your secrets and files never leave your device.
Industry-standard cryptographic algorithms and real-time network benchmarks for trustworthy diagnostics.
Do you have a project?
Tell us what you want to build. We review your project and present a proposal tailored to your goals.