Argon2 Hash + Verify

Hash Generator

Compute hashes of text or a file with thirteen algorithms at once: MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, SHA3-512, RIPEMD-160, BLAKE2b, BLAKE2s, BLAKE3, CRC32, and Adler-32.

Checksum Verifier

Verify the integrity of a file or text — paste the expected hash and the tool will detect the algorithm among 13 supported ones.

HMAC Generator

Compute HMAC (Hash-based Message Authentication Code) of text or a file with a secret key — eight algorithms at once: MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, SHA3-512, RIPEMD-160.

Bcrypt Hash + Verify

Hash passwords with bcrypt (random salt, adjustable cost) and verify a password against an existing bcrypt hash.

UUID Generator

Generate UUID versions 1, 3, 4, 5, 6 and 7 — random, time-based, and name-based.

Password Generator

Cryptographically random passwords with configurable length and character set.

Color Converter

Convert colors between HEX, RGB, HSL, HSV/HSB, and CMYK — enter a value into any field and the rest update instantly.

ROT13 / Caesar Cipher

Caesar cipher — a cyclic shift of Latin alphabet letters. ROT13 is the special case with shift 13 (button below), symmetric: encode and decode give the same result. Other characters (digits, punctuation, non-Latin letters) are left unchanged.

XML Entities Encode/Decode

Encode and decode XML entities — the 5 predefined ones (ampersand, angle brackets, apostrophe, quote) and numeric character references.

Regex Tester / Find & Replace

Test regular expressions against real text: highlighted matches with parsed capture groups, or replace matches with new text.

Timezone Converter

One moment in time, across several time zones at once. Compare working hours, plan calls, see the day difference.

Basic Auth Generator

Generate or decode an HTTP Basic Authentication header — Base64(username:password).