JSON formatter
Validate JSON and download a readable or compact version.
Your results
JSON formatter
Make a compact API response or configuration file easier to read, or remove unnecessary whitespace for a compact JSON export. Paste JSON or import a file, choose the output style, and check validation errors before downloading the result.
How to use this tool
- Choose a file, drag it into the upload area, import a public file URL, or paste your text below the upload options.
- Review the settings and create your result.
- Download and check the output before using it.
Supported input formats
JSONTXT
Available settings
- Output style
Output and limitations
Validate JSON and download a readable or compact version.
Paste up to 12,000 characters of valid JSON. Large numeric identifiers should be quoted strings to avoid rounding. This tool does not repair invalid JSON.
Where are my files processed?
Selected files are processed in your browser. Importing a URL uses the download service to retrieve the remote file.
What if processing fails?
Check the supported formats and file limits, then try a smaller file. Keep an original copy. A clear error message will explain an unsupported input or an unavailable processing service.