Local JSON formatter
JSON Formatter Online
Format, validate, minify, search, and inspect API JSON payloads without uploading data to a server.
Tree
Search key, value, path, or type
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Click Format to inspect valid JSON.
Select a tree node to inspect it.
Common JSON formatting tasks
- Beautify compact JSON responses with 2 spaces, 4 spaces, or tabs.
- Validate pasted JSON before using it in API clients, tests, or documentation.
- Search keys, values, object paths, and value types in a parsed JSON tree.
- Copy formatted JSON, minified JSON, object paths, or JSON Pointer values.
FAQ
Does this JSON formatter upload my data?
No. Formatting, validation, minifying, tree building, and search run in your browser.
Can it handle large JSON files?
Large payloads stay editable, and the tree preview is capped to keep the page responsive.
What is the difference between format and minify?
Format adds indentation for reading. Minify removes extra whitespace for compact storage or transfer.