🧩 Format JSON • 🔄 JSON ↔ CSV • 🔒 Runs locally in your browser

JSON Formatter & JSON ↔ CSV Converter

Format, validate, and minify JSON instantly. Convert JSON to CSV and CSV to JSON directly in your browser. Fast, private, and mobile friendly.

JSON tools

Ready

Formatter, validator, minifier, and converter.

Input length

Characters in the input box.

Output length

Characters in the main output.

Format mode

Standard

JSON or CSV conversion workflow.

Input & Actions

Paste JSON or CSV, drag a .csv/.tsv file here, then format, validate, minify, or convert.

Ready

Input

Formatted / Minified Output

Auto-format

Status

Paste JSON or CSV, then use the tools below.

Best for JSON arrays of objects. Nested objects can be flattened into dot-keys or stored as JSON strings.

Flatten keys Delimiter

CSV Output

Paste CSV with headers in the first row. The converter returns a JSON array of objects.

Trim cells Infer types

CSV to JSON Output

Formatting and conversions run locally in your browser. Your JSON and CSV data is not intentionally uploaded to InstantQR servers.

CSV parsing supports quoted fields, commas inside quotes, and multiline values. Drag and drop .csv or .tsv files directly into the panel.

Related Developer Tools

Is this JSON formatter free to use?

Yes. The JSON formatter and JSON/CSV conversion tools are free to use.

Does this tool validate JSON?

Yes. You can validate JSON, format it, minify it, and copy or download the result.

Can I convert JSON to CSV and CSV to JSON?

Yes. The tool supports JSON to CSV conversion and CSV to JSON conversion directly in your browser.

Does InstantQR upload my JSON or CSV data?

No. Formatting and conversions run locally in your browser and your data is not intentionally uploaded.