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🔐 Security · 9 Tools

Security & Encoding Tools

Free tools for hashing, encoding, JWT, password generation, and UUIDs

Security and encoding utilities are among the most frequently needed — and hardest to find as clean, trustworthy, browser-based tools. Whether you're hashing a string to verify data integrity, decoding a JWT token to debug an authentication issue, encoding an image as Base64 for an email template, or generating a cryptographically secure password, you need tools you can trust with sensitive data.

MODOO HUB's 9 security and encoding tools run entirely in your browser. The Hash Generator supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512. The JWT Decoder shows the full header and payload without any server round-trip. The Password Generator uses the Web Crypto API's getRandomValues() for true cryptographic randomness — not the predictable Math.random().

Nothing you input is ever transmitted. These tools are safe to use with real API tokens, secrets, and sensitive strings.

All 9 Security & Encoding Tools
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Password Generator
Cryptographically secure random passwords
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Hash Generator
MD5, SHA-1, SHA-256, SHA-512 hashing
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JWT Decoder
Decode and verify JWT tokens client-side
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JWT Generator
Create signed JWT tokens with custom claims
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Base64 & URL Encoder
Encode/decode Base64 and URL strings
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HTML Encoder / Decoder
Escape and unescape HTML entities
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Base64 Image Converter
Convert images to/from Base64 data URIs
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UUID Generator
Generate UUID v4 identifiers in bulk
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Random String Generator
Custom length random strings with any charset
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Frequently Asked Questions
What hashing algorithms does the Hash Generator support?▼
The Hash Generator supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512. Use SHA-256 or higher for security-sensitive applications — MD5 and SHA-1 are considered cryptographically weak.
Can I use the JWT Decoder to verify a token's signature?▼
The JWT Decoder decodes the header and payload client-side and can validate the HMAC signature if you provide the secret key. It supports HS256, HS384, and HS512 signed tokens.
Are the passwords generated here truly random?▼
Yes. The Password Generator uses the browser's built-in crypto.getRandomValues() API, which produces cryptographically secure random values — not predictable pseudo-random numbers from Math.random().
What is Base64 encoding used for?▼
Base64 is used to safely transmit binary data (like images or files) over text-based protocols. It's commonly used in data URIs, email attachments, and HTTP Authorization headers.
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