JSON Formatter
Free online JSON Formatter and Minifier. Beautify messy JSON data for readability or minify it to reduce file size for production. Validate and debug JSON instantly.
About the JSON Formatter & Beautifier
The JSON Formatter by Coders Kit is a developer's best friend for debugging and data formatting. JSON (JavaScript Object Notation) often comes as a minified, unreadable string from APIs. Our tool instantly formats, indents, and beautifies raw JSON data into a readable, tree-like structure. It also validates your JSON, alerting you to syntax errors immediately.
Features for Developers
Beautify (Pretty Print)
Converts messy, one-line JSON strings into a structured, multi-line format with standard 2-space or 4-space indentation.
Minify JSON
Removes all unnecessary whitespace, newlines, and comments to create the smallest valid JSON string possible for production use.
Error Validation
If your JSON has a missing comma or a stray bracket, our tool acts as a linter, catching the error and failing gracefully so you know what to fix.
Frequently Asked Questions (FAQ)
- Is my JSON data private?
- Yes, absolutely. This tool runs 100% client-side. Your API keys, user data, or config files are never transmitted over the network.
- Why is my JSON invalid?
- Common errors include trailing commas (not allowed in standard JSON), using single quotes instead of double quotes for keys, or missing closing braces.
- Can it handle large files?
- Yes, our optimized React text engine handles large JSON payloads (megabytes in size) without freezing your browser.