Code Tool
JSON Formatter & Validator
Format, validate, minify and sort JSON in one browser workspace. Paste code or upload a file, fix clear parse errors, then copy or download clean JSON without sending it to a server.
JSON input
Paste raw JSON, drop a file or load a sample to get started.
Drop a JSON file
Choose a .json file. It is read locally in your browser.
Primary actions
Secondary actions
StatusReady to start
Paste JSON to format, minify or validate it.
PrivacyYour JSON is processed in your browser and is not uploaded.
Output
Run format or minify to generate output.
No output yet
Paste JSON, then choose Format JSON or Minify.
Input characters0
Output characters0
Input lines0
Output lines0
Size estimate0 B
Top-level typeUnknown
How to Use JSON Formatter & Validator
- Paste JSON into the editor or upload a local JSON file.
- Choose Format, Minify or Validate depending on whether you need readable output, compact output or a syntax check.
- Use sort keys when you want stable object ordering for review or diffs.
- Review any parse error, then copy or download the clean JSON when the output is valid.
FAQ
Can this JSON formatter fix invalid JSON automatically?
It explains JSON syntax errors clearly so you can fix them, but it does not guess or silently change broken data.
Does the JSON formatter upload my data?
No. Pasted JSON and uploaded JSON files are processed locally in your browser.
Can I minify JSON for APIs?
Yes. Use Minify to remove whitespace and create compact JSON for requests, responses or configuration files.
Can I sort JSON keys?
Yes. Enable key sorting before formatting to make object output more consistent for reviews and comparisons.