Hashes/Crypto

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.

Similar tools

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.

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.

AES Encrypt/Decrypt

Encrypt and decrypt text with AES-GCM or AES-CBC using a password (key derived via PBKDF2).

Other tools

HTTP Headers Parser

Parse raw HTTP headers (from curl -I, DevTools, raw response) into a field list with descriptions and a security headers check.

Regex Tester / Find & Replace

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

IEEE 754 Float Converter

Decimal number ↔ IEEE 754 binary representation (single or double precision) — sign, exponent, mantissa, special values.

Roman Numeral Converter

Arabic number ↔ Roman numeral. Type into either field and the other updates automatically.

Email Header Analyzer

Parse raw email headers (View Source / Show Original) — key fields, the Received chain with hop timings, SPF/DKIM/DMARC, From/Reply-To spoofing indicators.

Markdown Preview / HTML ↔ Markdown

Live preview of Markdown as formatted HTML, plus two-way conversion: Markdown → HTML and HTML → Markdown.