JSON Formatter & Beautifier

Format and beautify JSON online, then publish to a live site

Formatted output
Indentation

Your JSON stays in your browser. Nothing is stored unless you publish.

Need to send the file itself? Share the file as a link instead. Not JSON? The other browser tools handle HTML, PDFs and 3D models.

How to format JSON online

  1. Paste your JSON into the input panel, or click Upload to load a .json or .txt file.
  2. Pick your preferred indentation: 2 spaces, 4 spaces, or tabs.
  3. Click Beautify. Your formatted JSON appears in the output panel, ready to copy, download, or publish.

What is a JSON beautifier?

A JSON beautifier takes minified or messy JSON and reformats it with consistent indentation and line breaks, making nested objects and arrays easier to read. It parses the input first, so any syntax error is caught before formatting.

Open and format a JSON file

Click Upload or drag a .json or .txt file onto the input panel. The file is read entirely in your browser. Once loaded, choose your indentation and click Beautify to clean it up.