JSON editor online

Paste JSON, and the editor will format it and point at the error if the structure is broken. The file is not uploaded anywhere: everything happens in the browser.

Open the editor

What the editor does

  • Formats JSON with readable indentation
  • Shows the position of a syntax error
  • Collapses JSON into a single line when a compact form is needed
  • Keeps recent documents so you can return to them

Questions

Are my files uploaded to a server?
No. The editor works entirely in the browser, and the text of your document never leaves the device.
Do I need an account?
No. The editor is free and open without sign-up.
Where are recent documents stored?
In your browser, in IndexedDB. Clearing site data removes them, and they are not visible on other devices.
How is this different from an online editor that uploads my file?
Such an editor sends the text to someone else's server to render it. Here the markup is parsed by your browser, so a draft contract or an unpublished article stays on your machine. That also means the editor keeps working with no connection at all.