Security & Cryptography tools
Free security and cryptography tools on toolcan: generate strong passwords, check entropy, hash text, and encode or decode data. Everything runs locally in your browser.
Popular Security & Cryptography tools
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Password Generator
Create strong, random passwords with full control over length and character types (uppercase, lowercase, digits and symbols) plus a live strength estimate. Generated entirely in your browser.
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Password Entropy Calculator
Measure a password’s entropy in bits from its length and character variety, with a strength rating and a rough offline crack-time estimate. Runs in your browser.
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PDF Password Protector
Add a password to a PDF with 256-bit AES encryption, or remove a password you already know. Powered by QPDF compiled to WebAssembly; everything runs in your browser and nothing is ever uploaded.
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Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 checksums of any text instantly. All hashing runs in your browser, your input is never uploaded.
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Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text, with a URL-safe (base64url) option. UTF-8 aware, so emoji and accented characters round-trip perfectly. Runs in your browser.
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JWT Decoder
Decode a JSON Web Token to read its header and payload, with standard time claims (iat, exp, nbf) shown as readable dates and an expiry check. Decoding only, done privately in your browser.