JSON Formatter & Validator
Paste your JSON to instantly format, validate, or minify it — all in your browser. No uploads, no sign-up.
Why Use PixConvert JSON Formatter
The fastest, most private JSON tool on the web — no accounts, no data collection, no latency.
Instant Validation
Real-time syntax checking highlights errors as you type. Pinpoints the exact line and column of the problem.
100% Private
Your JSON never leaves your device. No server, no logs, no telemetry. Safe for API keys, tokens, and sensitive configs.
Shareable Links
JSON is encoded into the URL hash. Share a formatted snippet with a single click — teammates open the same data instantly.
Format & Minify
One click to pretty-print with 2-space indentation, or minify to the smallest valid JSON for production APIs.
Monaco Editor
Powered by the same editor as VS Code. Full syntax highlighting, bracket matching, and keyboard shortcuts.
No File Size Limits
Format JSON of any size. Your browser handles it locally — no server timeouts or file upload caps.
Who Uses This JSON Formatter
Every developer who works with APIs, configs, or data pipelines.
API Development
Inspect and debug API responses from REST or GraphQL endpoints instantly.
- Format raw API responses
- Validate JSON before sending requests
- Share formatted payloads with teammates
Config Files
Clean up messy JSON config files — package.json, tsconfig, AWS CloudFormation, and more.
- Fix trailing commas and syntax errors
- Standardize indentation across the team
- Minify config before bundling
Data Engineering
Validate large JSON datasets and logs without installing anything.
- Quickly check if a file is valid JSON
- Format log output for readability
- Minify to reduce storage or transfer size
How to Format JSON in 2 Steps
Paste your raw JSON into the editor. The tool validates it in real time and highlights any syntax errors.
Click Format to pretty-print with 2-space indentation, or Minify for compact output. Copy or share via URL.
Use Share Link to send the formatted JSON via URL hash — recipients see the same data without any server round-trip.
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Hash Generator
Generate MD5, SHA-1, SHA-256 hashes
Frequently Asked Questions
Everything about formatting and validating JSON in the browser.
Is my JSON data safe?
Yes. The formatter runs entirely in your browser using JavaScript. Your JSON is never sent to any server, stored, or logged. It's safe to paste API keys, authentication tokens, and private configs.
What's the difference between Format and Minify?
Format (pretty-print) adds indentation and newlines to make JSON human-readable. Minify removes all whitespace to produce the smallest valid JSON string — useful for reducing payload size in production APIs.
Why is my JSON showing as invalid?
Common causes: trailing commas (not valid in JSON, only JSON5), single-quoted strings (JSON requires double quotes), missing quotes around keys, or comments (not supported in standard JSON). The error message pinpoints the exact line and column.
How do shareable links work?
Your JSON is base64-encoded and stored in the URL hash (#data=...). No data is sent to our servers. When someone opens the link, the JSON is decoded from the hash client-side. Links work offline after the page loads.
Is there a file size limit?
No limit is imposed by the tool. Very large JSON (>10 MB) may feel slow depending on your device, as Monaco renders syntax highlighting for every character. For huge files, consider a local editor like VS Code.