Available tool
CSV to JSON Converter
Convert CSV, TSV, or delimited text to JSON locally in your browser for API mocks, imports, fixtures, and documentation.
Open toolDeveloper Tools
JSON Formatter
Format, validate, minify, and copy JSON locally in your browser without sending input to a server.
Runs locally in your browser
JSON Formatter
Paste JSON, format it for readability, minify it for transport, or copy the result.
How to use it
Use this JSON Formatter when you need to inspect an API response, clean up configuration, paste a payload into documentation, or minify JSON before sharing it.
The formatter uses the browser’s native JSON parser. If the input is invalid, the tool shows a parsing error so you can fix the original data.
For review workflows, convert tabular data with the CSV to JSON Converter, format payloads first, resolve exact paths with the JSON Pointer Resolver, inspect nested values with the JSONPath Tester, generate starter validation drafts with the JSON Schema Generator, compare changes with the Text Diff Checker, or draft API types with the JSON to TypeScript Types Generator.
Related tools
Keep the workflow moving
These local-first tools often pair well with JSON Formatter.
Available tool
JSON Pointer Resolver
Resolve RFC 6901 JSON Pointers against JSON locally in your browser for OpenAPI, JSON Schema, JSON Patch, and API debugging.
Open toolAvailable tool
JSON Schema Generator
Generate a starter JSON Schema from example JSON locally in your browser for API contracts, validation, tests, and documentation.
Open toolFAQ
JSON Formatter questions
Does this JSON Formatter upload my data?
No. Formatting and minifying run in your browser. The tool does not send your JSON to the server.
Can this tool fix invalid JSON automatically?
It reports parsing errors clearly, but it does not guess how to repair invalid JSON because that can change the meaning of your data.
What is the difference between format and minify?
Format adds indentation and line breaks for readability. Minify removes unnecessary whitespace to make the JSON smaller.