Security & Crypto Tools

Generate strong passwords, encrypt text with AES, verify checksums — built on the native Web Crypto API.

8 tools 100% client-side
Popular

Password Generator

Strong random passwords generated locally with crypto.getRandomValues.

Open

Passphrase Generator

Memorable multi-word passphrases — easier to type, harder to crack.

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Password Strength Checker

Estimate entropy and crack time for any password — fully offline.

Open

Encrypt & Decrypt Text

AES-GCM 256 encryption with a passphrase — round-trip in your browser.

Open

Random PIN Generator

Generate numeric PINs of any length with optional unique digits.

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Popular

File Checksum

Compute SHA-1, SHA-256 and SHA-512 for any file — locally, never uploaded.

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Secure Notes

A local-only encrypted notepad — passphrase-locked with AES-GCM 256.

Open

SSL Certificate Decoder

Decode a PEM certificate into subject, issuer, validity and serial — locally.

Open