Format and Validate JSON Instantly at Convert-Text.net
Welcome to Convert-Text.net's JSON Formatter & Minifier, the fastest way to turn messy, single-line JSON into a clean, readable structure. Paste a raw API response, a configuration file, or an export from any service into the box above, and click Format to pretty-print it with a 2-space indent, click Minify to compress it onto a single line, or click Validate to check it for errors.
No sign-ups, no uploads, and no limits. Every transformation runs locally inside your browser, so your data never leaves your device.
Three Tools in One
- Format: Pretty-prints your JSON with proper indentation and line breaks so nested objects and arrays become instantly readable.
- Minify: Strips all unnecessary whitespace and compresses your JSON to a single compact line, ideal for logs, payloads, and quick transfers.
- Validate: Checks your input against the JSON specification and pinpoints errors with line and column numbers.
Common Uses for a JSON Formatter
- Debug API Responses: Paste raw JSON from curl, Postman, or a web inspector and format it to spot structure problems fast.
- Read Config Files: Pretty-print settings such as package.json, .eslintrc, docker-compose.yml, or tsconfig.json before editing them by hand.
- Validate Data for Import: Confirm that an export is valid JSON before importing it into databases, CRMs, or analytics pipelines.
- Shrink Payloads: Minify JSON before storing it in cache keys, query strings, or log entries to save space.
How to Format JSON in 3 Steps
- Paste Your JSON: Copy raw JSON from any source (API, file, or database export) into the input box above.
- Choose Your Action: Click Format for a readable, indented layout, Minify for a single compact line, or Validate to check its correctness.
- Copy the Result: Click the Copy button in the result section and paste the output wherever you need it.
100% Client-Side Privacy & Security
Your JSON never leaves your browser. Convert-Text.net parses, formats, and minifies everything locally with plain JavaScript. Nothing you paste is uploaded, logged, or stored, so this tool is completely safe for API keys, private configurations, and confidential business documents.
Frequently Asked Questions
What does formatting JSON mean?
Formatting JSON means rebuilding a snippet with indentation and line breaks so nested objects become easy to scan by eye. The content itself is unchanged, only the whitespace is prettified.
What is the difference between formatting and minifying JSON?
Formatting adds whitespace for readability; minifying removes all whitespace for compactness. Use Format when you are reading or editing data, and Minify when you want the smallest possible payload.
Is my JSON stored on your servers?
No. Convert-Text.net does not send your text to any server. All formatting and validation runs inside your browser, and your input is gone the moment you close or refresh the tab.
What happens if my JSON is invalid?
The tool shows a clear error message with the line and column where the problem occurred, and produces no output. Fix the reported spot in your data and try again.
Is the JSON Formatter free to use?
Yes. Convert-Text.net is 100% free with no registration, no usage caps, and no artificial size limits because the work happens on your machine.