JSON Workspace – Format, Extract & Transform Complex JSON
Single workspace with formatting, JSONPath extraction, flatten/unflatten, and validation so you can complete JSON workflows without switching tabs.
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› About this tool · FAQ
Complete JSON toolkit in one unified workspace. Format and beautify JSON, extract specific values with JSONPath queries, flatten nested structures, and transform data - all without switching tools. Perfect for developers working with complex JSON data.
What makes this different from a regular JSON formatter?
This is a complete JSON workspace that combines formatting, validation, path extraction, and flattening in one tool. Instead of switching between multiple tools, you can work with JSON in different ways using side-by-side panels. Format your JSON, then immediately extract specific values or flatten the structure without copying data between tools.
How do I extract specific values from JSON?
Use the Path Extractor panel (click the panel toggle) and enter a JSONPath expression like $.users[*].name to extract all user names, or $.products[?(@.price>100)] to filter by condition. The results appear instantly as you type.
What is JSONPath and how do I use it?
JSONPath is a query language for JSON similar to XPath for XML. Use $ for root, . for properties ($.user.name), [*] for all array elements, [n] for specific index, [?(@.prop>value)] for filters, and .. for recursive search. The tool provides quick examples and auto-completion.
Can I flatten and unflatten JSON in the same workspace?
Yes! The Flattener panel lets you switch between flatten and unflatten operations. Flatten converts {"a":{"b":1}} to {"a.b":1}, and unflatten does the reverse. You can customize the delimiter (dot, underscore, etc.) and array handling options.
What is JSONC and how does it differ from JSON?
JSONC (JSON with Comments) allows // comments, /* block comments */, trailing commas, and single quotes. Our formatter automatically strips these to produce valid JSON, making it easy to work with configuration files from editors like VS Code.
How do I work with multiple JSON operations at once?
Open side panels for Path Extractor or Flattener while keeping your formatted JSON visible. This lets you format JSON in the main view, then extract specific values or flatten the structure in the side panel - all working from the same input data.
Can I use this to validate large JSON files?
Yes, the tool handles JSON files up to 10MB efficiently. It validates syntax in real-time, shows detailed error messages with line numbers, and detects common issues like duplicate keys, missing quotes, and trailing commas. The tree view helps navigate large structures.
What does the tree view show?
Tree view displays JSON as an interactive, collapsible tree structure. You can expand/collapse nodes, search for specific values, copy individual values, and see the full path to any property. It's much easier than reading long JSON text, especially for deeply nested data.
How do I filter arrays with JSONPath?
Use the filter syntax [?(@.property operator value)]. Examples: [?(@.price>100)] for items over $100, [?(@.status=="active")] for active items, [?(@.name)] to find items with a name property. Supports ==, !=, <, >, and existence checks.
Can I save my workspace preferences?
Yes, all your preferences (indent size, sort options, panel states, etc.) are automatically saved to browser localStorage. Your settings persist across sessions, but your actual JSON data is never saved - it's processed entirely in your browser.
Is my JSON data secure?
Absolutely. All processing happens locally in your browser with zero server uploads. No data is transmitted, logged, or stored anywhere. You can even use the tool offline after the initial page load. Your API keys, credentials, and sensitive data remain completely private.
How do I export results from different tools?
Each panel (main formatter, path extractor, flattener) has its own copy and download buttons. You can export formatted JSON from the main view, extracted values from the path extractor, and flattened data from the flattener - all with one click.
What array indexing options are available for flattening?
When flattening, you can choose between dot notation (array.0.property), bracket notation (array[0].property), or numeric delimiter (array.0.property with custom delimiter). This affects how array indices appear in flattened keys.
Can I minify JSON while keeping certain formatting?
The minify mode removes all whitespace for the smallest file size. For selective formatting, use the format mode with custom indent size (2-8 spaces or tabs) and enable options like "inline short arrays" to keep simple arrays on one line while formatting complex structures.
How do I handle JSON with duplicate keys?
The workspace automatically detects duplicate keys and shows warnings. While JavaScript parsers accept duplicates (last value wins), they often indicate errors. The duplicate detection feature highlights these issues so you can fix them before using the JSON.