Format JSON, decode JWTs, encode Base64, convert Unix timestamps — paste and convert right here. No sign-up, no tracking, no server calls.
Practical notes on the tools developers actually use.
Yes. Every tool on ConverterHub is free with no sign-up, no paywall, and no usage limits.
No. All conversions run entirely in your browser. Nothing you paste is transmitted to our servers.
Once a tool page has loaded it typically keeps working without a network connection, because all processing happens in the browser.
Use the JWT Decoder. It splits the token into header, payload and signature and shows expiry in a human-readable format. It never asks for your secret.