Security Tools

Browse all 18 free online security tools. 100% client-side processing — your data never leaves your browser.

What is my IP Address

Instantly detect your public IP address, location, ISP, and timezone information. A fast, secure, and private IP lookup tool — no data is stored or shared.

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Secure Password Generator

Generate unhackable passwords with custom symbols and length. Client-side generation ensures your passwords stay private.

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SHA-256 Hash Generator

Generate SHA-256 cryptographic hashes for your text data instantly. 100% client-side processing — your data never leaves your browser. Fast, free, and secure for developers.

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SHA-512 Hash Generator

Generate SHA-512 cryptographic hashes for your text data instantly. 100% client-side processing — your data never leaves your browser. Fast, free, and secure for developers.

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Base64 Encoder/Decoder

Fast and secure Base64 encoding and decoding. Safely process sensitive strings entirely in your browser with zero server interaction. Free, instant, and privacy-first.

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JWT Debugger & Decoder

Debug and verify your JSON Web Tokens (JWT). Inspect headers and payloads instantly with this secure developer tool.

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URL Encoder/Decoder

Encode or decode URLs to ensure they are safe for web transmission. Perfect for fixing broken links and parameters.

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BCrypt Password Hasher

Generate and verify Bcrypt hashes for secure password storage. Choose your cost factor for maximum security. 100% client-side — your passwords stay private.

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RSA Key Pair Generator

Generate secure RSA 2048-bit or 4096-bit public and private key pairs instantly in your browser. No server uploads — keys are created 100% client-side for maximum privacy.

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AES Encryption/Decryption

Encrypt and decrypt text using AES-256 standards. Keep your sensitive information safe with client-side processing.

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SSL/TLS CSR Decoder

Decode and inspect CSR or SSL certificate details including expiry, issuer, subject, and SAN fields. Free online tool — no data leaves your browser.

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Htpasswd Generator

Generate .htpasswd file content for Apache and Nginx servers. Secure your directories with Bcrypt or MD5 hashing. Free, fast, and entirely browser-based.

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MD5 Hash Generator

Generate MD5 hashes for your text and files instantly. A quick and reliable tool for integrity checking, checksums, and development tasks — all client-side.

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HTML Entity Encoder/Decoder

Safely encode and decode HTML entities to prevent XSS and script injection. Ensure your text displays correctly in browsers. Free and fully client-side.

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Secure UUID/GUID Generator

Generate version 4 UUIDs (GUIDs) individually or in bulk for your databases and APIs. Fast, reliable, and cryptographically random unique IDs for developers.

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HMAC Generator

Generate HMAC (Hash-based Message Authentication Code) using SHA-256, SHA-512, and more. Verify data integrity and authenticate your API calls securely.

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Random API Key Generator

Generate high-entropy random API keys for your web applications and services. Choose length, format, and prefix. Secure, fast, customizable, and fully client-side.

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Blowfish Encryption/Decryption

Encrypt and decrypt text data using the Blowfish symmetric cipher. Secure, browser-side encryption for sensitive notes and messages — your data never leaves your device.

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Security Tools - Free Online Security Utilities | T00LZ | T00lz