CodePrettify
Local JSON formatter, inspector, converter and typed-code generator for Chrome & Windows
Free - Free to use locally; no account or uploads required
About CodePrettify
CodePrettify is a local-first JSON formatter and developer toolkit for Chrome/Edge and Windows. Format, inspect, query, validate, repair, compare, convert, visualize as diagrams, and generate typed models or JSON Schema from samples — all without uploading data or creating an account. Generate nested, safe identifiers and exact JSON field mappings for 11 language targets (TypeScript, Zod, C#, Java, Kotlin, Python/Pydantic, Go, Rust, Swift, Dart, JSON Schema). Copy, export, or open results as documents.
Key Features
- Local-only JSON formatting, inspection, validation, repair and comparison (Chrome/Edge extension + Windows app)
- Generate typed models or JSON Schema from samples for 11 targets (TS, Zod, C#, Java, Kotlin, Python/Pydantic, Go, Rust, Swift, Dart)
- Uses every record in arrays to infer required/optional/nullable fields and creates nested models with safe identifiers
- Convert between formats, visualize JSON as diagrams, query with filters, and export or open generated code as documents
- No account or external uploads — all processing happens locally
Who is this for?
Developers working with JSON who need local formatting, validation, visualization, conversion, and typed-model generation
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FreeFree to use locally; no account or uploads required
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