JSON Formatter, Validator, and Beautifier
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate.
How to use this JSON Formatter
Paste your raw, compressed, or even broken JSON into the input box. The tool will automatically syntax highlight, format with indentation, and build a collapsible tree viewer.
If your JSON has extra trailing commas or single quotes, our smart auto-repair engine will fix it for you.
Python Dict to JSON Converter
Python dictionaries use single quotes for strings and capitalized literals like True, False, and None — none of which are valid JSON. This tool automatically converts Python dict output to valid JSON: single quotes become double quotes, True becomes true, False becomes false, and None becomes null.
Simply paste your Python dict directly into the input box and it will be parsed, repaired, and formatted as proper JSON instantly — no manual editing required.