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Reverse Shell Generator Generate reverse shell payloads in Bash, Python, PHP, PowerShell, Netcat, and more. All generated locally in your browser.
Base64 Encoder / Decoder UTF-8 safe Base64 encoding and decoding. Encode text to Base64 or decode Base64 back to plain text instantly.
JWT Decoder Decode and inspect JWT tokens. View header, payload, and claims with syntax highlighting — all processing happens locally.
Hash Generator Generate SHA-256, SHA-512, SHA-1, and MD5 hashes from any input. Uses the Web Crypto API — no data sent anywhere.
Certificate Decoder Parse X.509 certificates (PEM format). View subject, issuer, validity, fingerprints, and extensions without sending data to a server.
CVSS Calculator Calculate CVSS v3.1 base scores interactively. Adjust attack vector, complexity, privileges, and impact metrics to get the severity rating.

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Since all tools run entirely in your browser, we prioritize privacy and direct connection.

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CyberDevKit

Free browser-based cybersecurity tools. No signup. No backend. No tracking.

All tools run locally in your browser. No data is ever sent to any server.

Tools

Reverse Shell Generator
JWT Decoder
Hash Generator
Base64 Encoder/Decoder
Certificate Decoder
CVSS Calculator

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