Utility Toolkit
Handy everyday helpers for musicians, developers, and operators—free browser tools with private, watermark-free outputs.
Every tool is free, watermark-free, and runs entirely in your browser—nothing uploads to our servers. If anything needs extra permissions, we call it out right away.
Metronome
Keep time with a precise browser-based metronome featuring tap tempo and subdivision accents.
Tap Tempo BPM Finder
Tap along to discover the beats per minute of any rhythm or song in seconds.
Note ↔ Frequency Converter
Convert between musical notes and frequencies with cent offsets and tuning support.
Barcode Generator
Create printable Code128, EAN, UPC, or QR barcodes ready for download.
IBAN Validator
Check International Bank Account Numbers instantly with mod 97 validation.
Luhn Algorithm Checker
Validate credit cards, IMEIs, and other Luhn-based numbers in real time.
MIME Type Detector
Drop a file to reveal the most accurate MIME type and recommended file extension.
Unicode Normalizer
Normalize text to NFC, NFD, NFKC, or NFKD to eliminate sneaky unicode differences.
QR Code Scanner
Scan QR codes straight from your webcam with secure, on-device decoding.
Color Quantizer
Match any color to the closest swatch in your custom palette for consistent branding.