One page · Six tools · Zero network

Devbox: small things, fast.

Encode, decode, generate, convert. Stop bouncing between five tabs.

Base64

URL encode / decode

UUID generator

Count

Timestamp converter

Unix (seconds) ISO 8601

Local:

UTC:

Relative:

Day:

Hash (SHA via Web Crypto)

JWT inspector

Decodes header & payload only · doesn't verify signatures