Fibonacci ToolBox

Barcode generator

Code 128, EAN-13/8, UPC-A, ISBN, Code 39 and ITF barcodes as PNG and SVG, with check digits.

Barcode generator options
Runs in the background · stops after 60s
Results appear hereFill in the form and press Run.
See all

Hash & checksum

MD5, SHA-1/2/3, BLAKE2 and CRC32 of text or files, with checksum verification.

Open tool files

HMAC generator

Sign a message with HMAC (SHA-256, SHA-512…), as hex and Base64 — handy for webhook signatures.

Open tool

Password generator

Cryptographically random passwords, diceware-style passphrases and PINs, with entropy.

Open tool

UUID / ULID generator

UUID v4, time-ordered UUID v7, ULID, Nano ID, hex tokens and name-based UUID v5.

Open tool