Free Online JSON Formatter
Beautify, validate and minify JSON with clear error messages, right in your browser.
A one-line blob of JSON from an API response is nearly impossible to read, and a single missing comma can break a whole payload. This formatter indents your JSON into a clean, readable structure, checks that it is valid, and points to the problem when it is not. When you are done reading, one click minifies it back into a compact string for shipping. It is a staple for anyone working with APIs and config files.
How to Use the JSON Formatter
- 1
Paste your JSON — even a single minified line — into the input.
- 2
Format it to see the data indented and easy to read.
- 3
If there is a syntax error, read the message and fix the highlighted spot.
- 4
Copy the beautified JSON, or minify it back to a compact string before you ship.
Why Use TextsPro
Parsing and formatting happen entirely in your browser, so your JSON — which often carries API keys, tokens or customer data — is never uploaded or stored. That is exactly what you want from a developer tool handling potentially sensitive payloads. With no server involved it responds instantly however large the document, and it is free with no account and no limit. If your data includes encoded URLs, the URL decoder helps you read those fields too.
- Processed in your browser — files are never uploaded
- Instant results with no queues or waiting
- No signup, no watermarks, completely free