Tool Kumar tools

JSON tools for everyday developer work

Format, validate, compare and convert JSON in your browser. These tools share the same local editor, so your documents stay on your device.

JSON viewer and formatter

JSON formatter

Format, validate, repair, minify and explore JSON in the main Tool Kumar editor.

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Validation and error view

JSON validator

Validate JSON online in your browser. Find syntax errors, trailing commas and repairable issues without uploading sensitive data.

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Minified JSON view

JSON minifier

Minify JSON online and copy a compact payload. Tool Kumar keeps key order and large numeric values while processing the file locally.

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Compare view

JSON diff

Compare two JSON documents side by side. Tool Kumar highlights changed values and keeps both inputs local in your browser.

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TypeScript output

JSON to TypeScript

Convert JSON to TypeScript interfaces or types online. Paste an example and get code with inferred nested shapes in your browser.

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Zod schema output

JSON to Zod

Generate a Zod schema from JSON online. Tool Kumar infers nested objects and arrays locally and lets you copy the TypeScript result.

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JSON Schema output

JSON Schema generator

Generate JSON Schema from a JSON example. Tool Kumar infers properties, arrays and primitive types in your browser with no upload.

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Go output

JSON to Go

Convert JSON to Go structs with nested types and JSON tags. Tool Kumar runs the conversion in your browser and keeps the input local.

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Python output

JSON to Python

Convert JSON to Python Pydantic models. Tool Kumar infers nested fields and keeps your sample data in the browser while generating code.

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YAML output

JSON to YAML

Convert JSON to YAML online with a local, lossless parser. Paste an object or array and copy clean YAML for configuration and docs.

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YAML import to JSON

YAML to JSON

Convert YAML to formatted JSON online. Tool Kumar parses plain YAML locally, reports errors and keeps the converted document on your device.

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CSV output

JSON to CSV

Convert an array of JSON records to CSV online. Tool Kumar flattens nested fields into dotted columns and keeps the export local.

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CSV import to JSON

CSV to JSON

Convert CSV to JSON online. Tool Kumar detects columns, parses numbers and booleans, and keeps the imported result in your browser.

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XML output

JSON to XML

Convert JSON to XML online. Tool Kumar maps objects and arrays to readable XML in your browser and keeps the source document private.

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XML import to JSON

XML to JSON

Convert XML to formatted JSON online. Tool Kumar parses elements and attributes locally and shows the result without uploading the source file.

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Excel export

JSON to Excel

Export JSON records to an Excel XLSX file online. Tool Kumar builds the workbook in your browser and never uploads your data.

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Decoded JWT JSON

JWT decoder

Decode a JWT online without sending the token to a server. Tool Kumar shows the header, payload, signature text and readable time claims.

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