Quick browser tools.
Nothing leaves your machine.
These tools run entirely in your browser using the Web Crypto API. We don't see, log or persist anything you paste in. If you need the same operations as an API — for instance to hash on a server — try the Hash & Encryption Toolkit.
QR code generator
Create QR codes for any URL or text. Custom colours, adjustable error correction, download as SVG or PNG. Nothing leaves your browser.
Open tool →Email validator
Check syntax, disposable/throwaway domains, role addresses and common typos. Runs locally.
Open tool →Credit card validator
Luhn checksum and card-network detection (Visa, Mastercard, Amex…) in your browser.
Open tool →Password generator
Generate strong, cryptographically-secure passwords with a live entropy estimate.
Open tool →Base64 encode / decode
Encode and decode Base64 with full UTF-8 support. Standard and URL-safe.
Open tool →MD5 hash generator
Compute the MD5 digest of any text locally. 32-character hex output.
Open tool →SHA-256 hash generator
Compute SHA-256 of any text in your browser. Output as hex or base64.
Open tool →SHA-512 hash generator
Compute SHA-512 of any text in your browser. No data leaves your machine.
Open tool →SHA-1 hash generator
Compute SHA-1 of any text. Note: SHA-1 is broken for security, fine for non-cryptographic uses.
Open tool →UUID v4 generator
Generate cryptographically-random UUID v4 identifiers (RFC 4122).
Open tool →