JSON.how
Free JSON formatter, validator and converter in your browser
See JSON.how in action
About
JSON.how is a set of free JSON tools that run entirely in your browser, so your data never leaves your device. Format and validate JSON, repair broken JSON, and convert between JSON and YAML, XML, TOML, CSV and JSON Schema. It can also generate types from a JSON sample for TypeScript, Java, Go, Python, C#, Rust, Kotlin, Dart and Swift. Each tool explains…
Read full description
JSON.how is a set of free JSON tools that run entirely in your browser, so your data never leaves your device. Format and validate JSON, repair broken JSON, and convert between JSON and YAML, XML, TOML, CSV and JSON Schema. It can also generate types from a JSON sample for TypeScript, Java, Go, Python, C#, Rust, Kotlin, Dart and Swift. Each tool explains the common mistakes behind a failed validation, like single quotes or bare keys.
- Category
- Engineering & Development
- Available on
- web
- Launched
- October 19, 2026
Reviews
No reviews yet. Be the first to share a useful, honest impression.
Sign in to review this app.
Opt in to release updates in your Rocket inbox. Unfollow here or in Notifications to stop future updates.