JSON Formatter & Prettifier
Paste · Format · Copy
Indent:
Input
Output
Frequently asked questions
- What is jsonDash?
- jsonDash is a free JSON prettifier and formatter. Paste any JSON — compressed, minified, or hard to read — and it instantly formats it with proper indentation so you can read and understand it at a glance.
- How do I use jsonDash?
- Paste your JSON into the left panel. The formatted output appears immediately on the right. Choose your preferred indentation (2 spaces, 4 spaces, or tabs) using the toggle above. Hit "Copy" to copy the result or "Download" to save it as a .json file.
- What if my JSON is invalid?
- jsonDash will highlight the error and tell you exactly what went wrong. Common issues include trailing commas (not allowed in JSON), single quotes instead of double quotes, or unquoted keys. Fix the error in the input and the output updates instantly.
- Can I use jsonDash to minify JSON?
- Yes. Switch to the "Minify" mode to strip all whitespace and produce the most compact representation. This is useful for reducing payload size when sending JSON over a network.
- What does the "Sort keys" option do?
- Sorting keys alphabetically makes large objects easier to scan and compare. It recursively sorts all object keys at every level of nesting. Array order is preserved — only object keys are sorted.
- Is there a size limit for my JSON?
- There is no hard limit. jsonDash runs entirely in your browser using JavaScript's built-in JSON parser, so performance scales with your device. Files up to several megabytes format instantly on modern hardware.
- Can I format JSON inside a string?
- If your input is a JSON string wrapped in quotes (like a stringified JSON value), jsonDash will try to detect and unwrap it automatically before formatting. This handles the common case where JSON has been double-serialized.
- Is my data private?
- Yes. All formatting happens in your browser using JavaScript. Your JSON is never sent to any server — this is a fully client-side tool with no network requests.