Input
1
Ln 1 Col 1
Indent
Output
// output appears here
—

Jsonic's JSON Beautifier transforms compressed or unreadable JSON into a clean, indented format. Paste minified or raw JSON and click Format to pretty print it with 2, 3, or 4 spaces of indentation. Switch to Tree view to explore nested objects and arrays visually. Everything runs in your browser — no data is sent to any server.

How to beautify JSON online

  1. Paste your JSON into the left panel, or upload a .json file.
  2. Select your preferred indentation: 2, 3, or 4 spaces.
  3. Click Format (or Beautify) to pretty print the JSON.
  4. Click Tree to switch to a collapsible node view.
  5. Click Copy or Download to save the beautified output.

FAQ

What does a JSON beautifier do?

A JSON beautifier (also called a JSON formatter or pretty printer) takes compressed or poorly indented JSON and reformats it with consistent indentation and line breaks, making it easy to read and edit.

What is the difference between JSON beautify and JSON format?

They mean the same thing: adding indentation and line breaks to make JSON human-readable. "Beautify" and "pretty print" are informal terms; "format" is the more technical term.

Is my JSON sent to a server?

No. All processing runs in your browser using JavaScript. Your JSON never leaves your device.

Can I beautify minified JSON?

Yes. Paste minified JSON (a single line with no spaces) and click Format. The beautifier parses it and re-indents it regardless of the original formatting.

How do I choose the indentation level?

Click the 2, 3, or 4 buttons in the toolbar before clicking Format. Most style guides recommend 2 spaces for JSON.

What is Tree view?

Tree view renders your JSON as a collapsible node tree. It is useful for exploring deeply nested objects without scanning formatted text.

Can I beautify a JSON file?

Yes. Click Upload and select a .json or .txt file. The content is loaded into the input panel and you can format it immediately.

What if my JSON has errors?

The beautifier will show a validation error and highlight the position of the problem. Fix the syntax error first, then format.