{ } JSON & Data Tools

Format, validate, and convert JSON and structured data. Everything runs locally in your browser.

JSON has become the universal language of data exchange on the web. Every REST API, configuration file, and NoSQL database speaks it. But raw JSON from an API response or a minified production build is often an unreadable wall of text. BoltQuickTools gives you a complete toolkit for working with JSON and related data formats, all running client-side so your payloads stay private.

Formatting and Validation

The JSON Formatter is the starting point for most workflows. Paste in a blob of minified JSON and get clean, indented output in a single click. It validates the structure as it formats, catching missing brackets, trailing commas, and misquoted strings with precise error messages. For projects that use JSON Schema, the Schema Validator checks your data against a Draft 7 schema definition and reports every violation with the exact path to the problem field.

Code Generation

Writing TypeScript interfaces by hand for every API response is tedious and error-prone. The JSON to TypeScript converter analyzes your JSON and produces properly typed interfaces, handling nested objects, arrays, and optional fields automatically. If you work with JSON Schema definitions, the Schema to Code tool goes further, generating typed models in TypeScript, Python, Go, Rust, Java, and C#. Both tools save hours of manual typing and reduce the chance of type mismatches between your API and your application code.

Format Conversion

Not every system speaks JSON. The conversion tools let you move data seamlessly between JSON and CSV for spreadsheet workflows, JSON and XML for legacy systems or SOAP services, JSON and YAML for Kubernetes and Docker configurations, and JSON and TOML for Rust toolchains and modern config files. Each converter handles edge cases like nested objects, arrays, custom delimiters, and multiline strings, producing clean output in both directions.

All of these tools process your data entirely within your browser tab. Nothing is sent to any server. This makes them safe for sensitive payloads like authentication tokens, internal API responses, and production database exports.

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