Where does processing happen?
You submit input from this page. Utiline runs the tool on secure servers—heavy parsing and crypto never ship to your browser.
Inspect · JSON formatter
Validate and format JSON
Paste JSON, choose format or validate, and get instant feedback—ideal for configs and API responses.
- Format and validate modes
- Line and column on errors
- Free input size limits
Structured text
Secure processing, simple download.
You upload from this page (or paste input for instant tools). Utiline processes your request in the cloud and gives you a link to download the result—nothing heavy runs in your browser.
When to use JSON formatter
Built for everyday file work.
- Pretty-print API responses
- Validate config before deploy
- Minify JSON payloads
Formatting accepts indent and sort keys; validation reports syntax errors with position.
Instant result
Run JSON formatter
Paste or type your input below and run the tool. Processing happens on Utiline's servers—your browser only sends the request and shows the answer.
Soft input cap: 32 KBSession: anonymousRuns instantly
FAQ
JSON formatter questions
Is my pasted input sent to analytics?
No. Optional analytics records only which tool you used and run status. What you paste never goes to analytics—only the result shown on this page.
Can I automate this in production?
Yes. See the developer quickstart for API keys, usage metering, and higher limits in production.