JSON · Data processing

JSON Toolkit

Format, validate, query, compare, and convert JSON. All core processing happens in your current browser.

What would you like to do?

Choose a task and get started.

Organize API responses

Format minified JSON, locate syntax errors, and copy field paths.

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Convert Data Format

Convert between JSON, CSV, YAML and TypeScript.

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Secure sharing example

Desensitize tokens, emails, and phones first, then share data with colleagues.

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JSON Toolkit

See what each tool does and how it handles your data.

Browse all tools

JSON Formatter WorkbenchFormat, validate, query, compare, and convert JSON dataBrowser local processing

CSV to JSONCSV Table and JSON Array ConvertBrowser local processing

YAML ConverterYAML/JSON Data ConverterBrowser local processing

Code FormatterBeautify JS, TS, CSS, HTML, JSON codeBrowser local processing

Text CompareCompare Two Texts Line by LineBrowser local processing

Before you start

Is JSON data uploaded?

The JSON workbench and CSV/YAML converters run in your browser. UsefulShelf does not save your input.

Can format errors be located?

Yes. The JSON workbench displays error line and column numbers, and provides fix previews for common issues like missing commas, quotes, and brackets.

Supports large files?

The JSON workbench supports files up to 10 MB and runs large tasks in stages with a cancel option.