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Analyze password security with 10 criteria checks, entropy calculation, crack time estimation, character breakdown, warnings, and improvement suggestions
Analyze any URL for phishing, suspicious patterns, and security risks. Detects login keywords, suspicious TLDs, encoded characters, brand impersonation, and more
Decode and analyze PEM-encoded X.509 SSL/TLS certificates. View subject, issuer, validity, extensions, and fingerprints
Paste any user-agent string and instantly see the browser name and version, operating system, device type, and rendering engine. Useful for debugging request headers, analyzing access logs, and understanding what clients are hitting your servers.
Parse the User-Agent header from failing requests to identify client-specific issues.
Decode user-agent strings from server logs to understand your traffic mix across browsers and devices.
Identify crawlers, scrapers, and automated agents by examining their user-agent signatures.
Decades of browser history led to each new browser appending compatibility tokens. Chrome's UA includes "Mozilla", "AppleWebKit", and "Safari" for legacy reasons.
No. Prefer feature detection (e.g., checking if an API exists in the browser) over user-agent sniffing, which is fragile and easily spoofed.
All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.