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JSON tools

Format, inspect, and convert JSON, validate it against a schema, and turn it into code without uploading it. Everything is computed in your browser.

12 tools

- JSON formatter

Pretty-print or minify, sort keys, and validate.
 (/json/formatter)
- JSON validator

Check strict JSON or JSONC, then explore it as a tree.
 (/json/validator)
- JSON sort

Sort object keys, top level or every level.
 (/json/sort)
- JSON string escape

Escape raw text into a JSON string body, and back.
 (/json/escape)
- JSON query

Pull values out with JSON Pointer or a JSONPath subset.
 (/json/query)
- JSON diff

Semantic and text comparison of two documents, with an RFC 6902 patch export.
 (/json/diff)
- JSON converter

Convert JSON to and from JSON5, HJSON, plist (XML or binary), YAML, TOML, CSV, XML, NDJSON, query strings, .env, MessagePack, CBOR, and BSON.
 (/json/convert)
- JSON to code

Turn JSON into typed models in 27 languages, including TypeScript, Go, Rust, Python, Swift, and Kotlin.
 (/json/codegen)
- JSON schema validator

Validate JSON against a JSON Schema (2020-12, 2019-09, or draft-07) with every rule stated up front.
 (/json/schema)
- JSONL / NDJSON

Validate line by line, infer columns, convert JSONL to CSV/TSV/Markdown/JSON.
 (/json/jsonl)
- Flatten JSON

Nested objects to dot keys and back. Collisions are caught and ambiguity is refused.
 (/json/flatten)
- JSON schema generator

Instance to schema: required threshold, nullability, tuples, re-validated.
 (/json/schema-generator)

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Canonical HTML: https://nutter.tools/json/
Markdown version: https://nutter.tools/json/index.md
Plain-text version: https://nutter.tools/json/index.txt
Agent index: https://nutter.tools/llms.txt