Create an account

Free, and nothing here is behind it. An account only carries your starred tools, your recent tools and your saved presets from one browser to the next.

What an account is for

Starred tools. Star the five you actually use out of 99 and they follow you to every machine you sign in from.
Saved presets. Name a set of settings — "orders export: flatten with dots, keep 6 columns, CRLF" — and reapply it in one click instead of retyping four fields.
Recent tools. The last dozen you opened, most recent first.

What it is not for

Your JSON never reaches us. Every tool is JavaScript in this tab. There is no upload endpoint to send a document to, with an account or without one. An account stores preferences — never the documents you paste.
No paywall. All 99 tools, no size cap, no metering, signed in or not. There is no Pro tier to upsell you to.
No confirmation email. Nothing on this box can send mail, so the account works immediately — and there is no "email me a reset link". You get a recovery code instead, once, on the next screen. Keep it somewhere.