Tool guides & FAQ

JSON Formatter

Readable JSON makes API responses, configuration files and debug logs easier to inspect. Formatting changes whitespace without rewriting string values or numeric tokens, including large integers. The output stays separate from your source so you can review it before copying or downloading.

  1. Paste JSON or open a local file.
  2. Choose the indentation and select Format.
  3. Inspect the output, then copy or download the JSON.

Example input

{"project":"KearAI","ready":true,"tools":["format","validate"]}
Open JSON Formatter

JSON Validator

Valid JSON uses double-quoted keys, allows no trailing commas and supports objects, arrays, strings, numbers, booleans and null. This validator highlights syntax errors and separately warns about duplicate keys and numbers that JavaScript may round. A valid document may still have data-quality warnings.

  1. Paste the document into the input editor.
  2. Select Validate to find an error or confirm the syntax.
  3. Use the highlighted location to fix the source and validate again.

Example input

{"status":"ok","count":3,"items":[1,2,3]}
Open JSON Validator

JSON Minifier

Minification removes indentation and line breaks outside strings. It is useful for compact fixtures, embedded configuration and transferring JSON. This tool preserves the spelling of numbers instead of parsing and reserializing them through JavaScript, so large IDs are not silently rounded.

  1. Paste a valid JSON document.
  2. Select Minify to produce a compact version.
  3. Copy the result or download a .json file.

Example input

{
  "name": "Compact JSON",
  "enabled": true
}
Open JSON Minifier

JSON to CSV Converter

CSV works best with an array of objects representing rows. The converter uses object keys as column names and escapes commas, quotes and newlines in cells. Nested values are serialized as JSON text. When opening untrusted CSV in spreadsheet software, import cells as text to avoid interpreting formulas.

  1. Paste an array of JSON records.
  2. Select Convert, then JSON → CSV.
  3. Review the columns and download the CSV output.

Example input

[{"name":"Ada","role":"Engineer"},{"name":"Lin","role":"Designer"}]
Open JSON to CSV Converter

JSON to YAML Converter

YAML is often used for configuration files where readability matters. The converter handles nested mappings, sequences and multiline text. In the reverse direction, duplicate mapping keys and unsafe numbers are rejected, and alias expansion is limited. YAML-specific values that JSON cannot represent are reported as errors.

  1. Paste valid JSON or a YAML document.
  2. Choose the matching conversion from the Convert menu.
  3. Review the output before replacing your configuration.

Example input

{"service":"api","replicas":2,"environment":{"LOG_LEVEL":"info"}}
Open JSON to YAML Converter

JSON to TypeScript

Generate a Root type directly from sample JSON. Array records are examined together so missing properties become optional and mixed values produce union types. Types are inferred from the supplied samples, so review them against your API contract before using them in production.

  1. Paste representative JSON samples.
  2. Choose Convert, then JSON → TypeScript.
  3. Copy the inferred Root type into your project and review optional fields.

Example input

{"users":[{"id":1,"name":"Ada"},{"id":2,"name":"Lin","active":true}]}
Open JSON to TypeScript

JSON Compare & Diff

Compare structured JSON values rather than indentation. Object key order does not create a difference, while array positions remain significant. The result identifies the paths of changed values. Precision-sensitive numbers and duplicate keys should be resolved before comparing parsed values.

  1. Paste the first document into the input editor.
  2. Open Compare and paste the second document.
  3. Select Compare to inspect the changes in the output panel.

Example input

{"version":1,"features":{"search":true,"export":false}}
Open JSON Compare & Diff

JSON Lines Converter

JSON Lines stores one complete JSON value per line and is commonly used for logs and data exports. Blank lines are ignored on import, while malformed records report their line number. Import preserves original number tokens; export blocks values that would lose numeric precision.

  1. Paste one JSON value per line.
  2. Choose Convert, then JSONL → JSON.
  3. Use JSON → JSONL for the reverse conversion of an array.

Example input

{"id":1,"event":"start"}
{"id":2,"event":"complete"}
Open JSON Lines Converter

Frequently asked questions

O que é um formatador JSON?

Um formatador JSON é uma ferramenta online que reformata dados JSON brutos com indentação adequada, facilitando a leitura, depuração e compreensão da estrutura de objetos e arrays JSON.

Como validar JSON online?

Cole seu JSON no editor de entrada e nossa ferramenta vai validá-lo em tempo real. A barra de status mostra se seu JSON é válido, e os erros de sintaxe são destacados com mensagens detalhadas.

Posso converter JSON para CSV, XML ou YAML?

Sim! Use o menu Converter para transformar JSON em formatos CSV, XML ou YAML, ou importe dados desses formatos para JSON. Todas as conversões são instantâneas no seu navegador.

Como funciona o assistente IA JSON?

Nosso assistente IA analisa seus dados JSON e pode explicar sua estrutura, corrigir erros, gerar interfaces TypeScript, criar JSON Schema, otimizar a estrutura e responder qualquer pergunta relacionada a JSON.

Esta ferramenta JSON é gratuita?

Sim, todas as ferramentas de formatação, validação, conversão e utilitários JSON são totalmente gratuitas. O assistente IA também é gratuito sem necessidade de cadastro.

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