JSON Formatter
Beautify JSON from APIs, AI tools, and logs with configurable indentation
Format raw payloads before you debug them
When an API response arrives minified or deeply nested, formatting is the fastest way to make the structure readable. It turns a one-line blob into something you can scan, diff, review, and share without losing the original data.
Use the formatter when you need to
Pretty-print a minified response
Expand compressed JSON so nested arrays, objects, and values are easy to inspect.
Normalize fixtures before code review
Apply consistent indentation and optional key sorting so diffs stay clean and predictable.
Prepare payloads for docs or tickets
Share readable request and response examples without manually editing whitespace.
How to format JSON quickly
- 1
Paste the JSON payload or upload a file.
- 2
Choose 2 spaces, 4 spaces, or tabs and enable key sorting if needed.
- 3
Click Format, then copy the cleaned result or download it for reuse.
Keep going
Validate after formatting
Check syntax and get exact line and column errors if the payload is still invalid.
Repair broken JSON
Auto-fix trailing commas, comments, unquoted keys, and other common issues.
Learn formatting workflows
Compare browser, CLI, and in-code formatting methods for different use cases.
Use a sample API response
Test your formatting workflow with a realistic nested payload example.
Common formatter workflows
Format it first so the bad field, missing quote, or odd nesting becomes obvious.
Readable payloads reduce back-and-forth when you need help debugging an integration.
Stable formatting makes structural changes easier to spot during reviews and deployments.
Related Tools
Frequently Asked Questions
Paste your JSON into the editor and click Format. You can choose 2-space, 4-space, or tab indentation. The tool runs entirely in your browser — nothing is sent to a server.
Make sure your JSON is valid first. Common issues include missing closing brackets, trailing commas, unquoted keys, or single quotes instead of double quotes. Try our JSON Repair tool to auto-fix these problems.
Yes. After formatting, use the Sort Keys option to alphabetically order all keys throughout the entire JSON document, including nested objects.
Completely safe. JSONTech processes everything in your browser using JavaScript. No data is ever transmitted to any server. You can verify this in your browser's Network tab.
They're the same thing. JSON Formatter, JSON Beautifier, and JSON Pretty Printer all describe the process of adding indentation and line breaks to make minified JSON readable.