JSON Editor

Online JSON Editor — Format, Validate & Visualize

PlainRaw's JSON editor pretty-prints, validates, and visualizes JSON in your browser. Paste a payload and it lints in real time — invalid syntax is highlighted with line and column numbers so you can fix it on the spot.

What you can do

  • Format and minify: switch between indented, human-readable JSON and a compact single-line version with one click.
  • Real-time validation: see exactly where a comma, bracket, or quote is missing without having to copy the text into a separate linter.
  • Tree view: collapse and expand nested objects and arrays to navigate large payloads quickly.
  • Interactive diagram: render the structure as a graph to understand the shape of an unfamiliar API response.
  • Share links: save the document and share a permalink with teammates without copy-pasting the entire payload into chat.

Common use cases

Inspecting REST API responses while debugging, cleaning up minified config files, comparing two structures by formatting them first and then opening the Text Diff view, and exploring nested data before writing a parser. Everything happens client-side, so your data never leaves the browser unless you choose to save the snippet.