Developer utility
JSON Format Studio
JSON formatter and validator for payloads that arrived wearing their shoes on the wrong feet.
Privacy by default: your input stays in the browser. No account ceremony, no server confessional.
Best for
- Developers debugging API payloads.
- Teams editing config files and fixtures.
- Anyone who needs valid JSON fast.
When to use
- Raw JSON is hard to scan and needs formatting.
- You need to validate payload syntax before sending.
- You want to minify output for transport or storage.
Input
Paste your JSON
Paste raw JSON, then prettify to read it, minify to ship it, or validate before using it.
Paste a JSON object or array here. Empty input will not run a transform.
Output
Formatted result
Run a transform and formatted JSON appears here.
Input
0 chars
Output
0 chars
Delta
0 chars
Inspect
Tree paths
After a successful transform, preview the first paths and value types without expanding a full tree.
Run Prettify, Minify, or Validate to inspect paths.
FAQ
Does this JSON formatter send data to a server?
No. Formatting and validation run locally in your browser.
What is the difference between prettify and minify?
Prettify adds indentation and line breaks for readability. Minify removes extra whitespace to reduce payload size.
Can I validate JSON before sending an API request?
Yes. Use Validate to catch syntax issues like missing commas, quotes, or brackets before you ship a payload.