2 Developer tools that open instantly and get out of the way.

Paste, get your answer, close the tab. Every tool runs in your browser, so there is no upload and no round trip — and no signup, no cookie banner, and nothing above the input but the tool.

the tools · 2 live

JWT Debugger/jwt-debuggerDecode and verify JSON Web Tokens locally — nothing you paste leaves this tab.Base64 Encode / Decode/base64-encode-decodeEncode and decode Base64 and base64url, including files — without mangling non-ASCII text.

Instant, and offline

Nothing round-trips to a server, so the answer is there as you type. Load a tool once and it keeps working with the network off.

No signup, no popups

No account, no cookie banner, no newsletter modal, and no ad unit between you and the input.

Your paste stays in the tab

The browser is instructed to block every request these pages could make — which is unusual, and checkable in ten seconds.

See how to check it →