Question 1

Is JSONCraft really 100% client-side?

Accepted Answer

Yes. The entire app is static assets — HTML, JS, and WebAssembly. There is no backend, and the app makes zero network requests after load. Open DevTools and see for yourself.

Question 2

Is JSON Formatter free?

Accepted Answer

Free and open source under the MIT license. No accounts, no paywalls, no premium tier.

Question 3

How does jq run in the browser?

Accepted Answer

A jq engine runs in JavaScript within a Web Worker. Queries evaluate against your in-memory document; no data is transmitted anywhere.

Question 4

Can I use JSON Formatter offline?

Accepted Answer

Yes. JSONCraft works offline — open it once and it works on planes, trains, and air-gapped machines.

Question 5

How does share-as-URL keep data private?

Accepted Answer

Encoded data lives in the URL fragment (after #), which browsers never send to servers. The recipient decodes it locally.