How do I open or convert a JSON file?

Use the free Sada Files JSON Formatter & Validator, JSON to CSV, Excel to JSON, Convert Data File tools — most run privately in your browser with no sign-up.

File Format

JSON .json

MIME: application/json
Type: data

What is a JSON file?

JavaScript Object Notation — structured data for APIs and configs.

Strengths

Typed, nested

Trade-offs

No comments

Open & convert JSON files

Free Sada Files tools that work with JSON — most run privately in your browser.

JSON Formatter & ValidatorPretty-print, minify, validate and sort keys.
JSON to CSVFlatten JSON objects into CSV columns.
Excel to JSONRows as JSON objects keyed by the header row.
Convert Data FileConvert between CSV, TSV, JSON, NDJSON, YAML, XML, TOML and Excel — nested data kept.