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JSONFlow — Free Online JSON Viewer, Formatter & Beautifier

Format, validate, query, and convert JSON, XML, YAML, TOML, and CSV instantly online with high-performance browser-side parsing.

Advanced Multi-Format Developer Workbench

JSONFlow is a powerful, high-speed, 100% client-side web application designed for software engineers, data analysts, and API developers. With JSONFlow, you can validate minified JSON API payloads, convert XML to JSON, execute JSONPath or XPath queries, inspect data structures in an interactive tree view or spreadsheet grid, and compare diffs between structured documents.

Key Features & Capabilities

  • JSON Formatter & Beautifier: Instant syntax highlighting, clean indentation, and error detection for unformatted or minified JSON strings.
  • Interactive Tree View: Expand, collapse, search, and pin nested nodes within complex JSON and XML hierarchies.
  • Grid & Spreadsheet View: Render flat and nested JSON arrays into tabular columns for easy viewing and CSV export.
  • Multi-Format Converter: Bi-directional conversion between JSON, XML, YAML, TOML, CSV, and GraphQL schemas.
  • JSONPath & XPath Query Engine: Query and extract specific values or subsets of data using standard expression syntax.
  • 100% Privacy & Security: All parsing and formatting happens inside your browser memory. Your confidential API keys, customer logs, and credentials never leave your device.

Frequently Asked Questions (FAQ)

What is a JSON Beautifier?

A JSON Beautifier (or JSON Formatter) is a developer tool that adds indentation, line breaks, and color coding to raw or minified JSON strings, making them easy for human developers to read and debug.

Is my data secure on JSONFlow?

Yes. JSONFlow operates entirely on client-side JavaScript. No payload data is ever uploaded to any external server or stored in any database.

What formats are supported?

JSONFlow supports JSON, XML, YAML, TOML, CSV, and GraphQL format parsing, validation, and bi-directional conversion.