How do I format JSON in Python?

Use the built-in json module: `import json; print(json.dumps(data, indent=2))`. The indent parameter controls the number of spaces. For files, use json.dump(data, file, indent=2).

How do I pretty print JSON from a Python file on the command line?

Run `python3 -m json.tool yourfile.json` to pretty print a JSON file without writing a script. You can also pipe JSON: `curl api.example.com/data | python3 -m json.tool`.

When would I use FixTools instead of Python for JSON formatting?

When you want a quick visual inspection without opening a terminal or writing code — for example, checking an API response from a browser, reviewing a colleague's JSON, or validating JSON on a machine where Python is not available.

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Format JSON in Python

Python has excellent built-in JSON formatting. The json module's dumps() function formats any Python dictionary or list as indented JSON: `json.dumps(data, indent=2)`. For pretty-printing from the command line, `python3 -m json.tool file.json` works without writing a script. When you want to quickly inspect a JSON snippet visually — without writing a script or opening a terminal — FixTools gives you instant browser-based formatting.

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How to use this tool

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Paste JSON output from your Python script into FixTools for instant visual formatting and validation.

How It Works

Step-by-step guide to format json in python:

1
Run your Python script
Generate or fetch the JSON in Python using json.dumps(data, indent=2) or print the raw output.
2
Paste into FixTools
Copy the JSON output (formatted or raw) and paste it into the FixTools JSON Formatter.
3
Format and inspect
Click Format to see the structured output with syntax highlighting — useful for reviewing complex nested data.