Tools
Free tools.
No ads.
Small utilities I built because the ad-riddled alternatives annoyed me. Everything runs in your browser: no accounts, no tracking, no upsells.
qr.generate
Featured toolQR code maker
Generate QR codes with custom colours, sizes, and error correction, then download the PNG. No ads. No tracking. No watermark.
eth.validate
Ethereum address validator
Check Ethereum address syntax and supplied mixed-case EIP-55 checksums, entirely in your browser. Nothing you paste ever leaves the page.
unit.convert
Unit converter
Convert Ethereum denominations, number bases, and length units. Ethereum amounts use BigInt arithmetic to keep large values precise.
text.uppercase
Uppercase converter
Paste text, get UPPERCASE. Sometimes the simplest tool is the one you reach for.
text.lowercase
Lowercase converter
Paste text, get lowercase.
tictactoe.play
Tic tac toe
A tiny game, because not everything needs a business model.