Using the JSON Viewer & Beautifier Like a Pro

How to validate, beautify and minify JSON quickly in the browser — helpful for debugging APIs and inspecting data.

JSON Viewer illustration

Developer tips

Paste JSON to validate structure and find errors instantly
Beautify for readable inspection, or Minify for compact transport
Copy formatted JSON or clear the editor when done

Open the JSON Viewer →

Published Dec 30, 2025 · © FreeToolDeck