JSON Extractor Online - Dot Notation Field Extraction
Extract specific fields from JSON using path queries. Access nested objects, arrays, and properties quickly.
What Problem Does JSON Extract Solve?
Large JSON API responses often contain hundreds of fields, but you only need one or two values buried deep inside. Without this tool, you'd have to write a script, use the browser console, or manually scroll through nested braces. The JSON Extractor lets you pull out exactly what you need using a simple dot-notation path — no code required.
Who Uses This Tool?
Extract specific fields from a huge API response to inspect values without scrolling through thousands of lines.
Pull targeted columns from nested JSON datasets — extract just the fields needed for a report or visualization.
Quickly test JSONPath expressions before hardcoding them into application logic or ETL scripts.
Probe third-party API responses to locate the exact data fields needed for integration mappings.
Input / Output Example
Enter your JSON and a dot-notation path. The tool returns exactly the value at that path.
{
"store": {
"name": "TechMart",
"location": {
"city": "San Jose",
"zip": "95134"
},
"products": [
{"sku": "A100", "price": 29.99},
{"sku": "B200", "price": 49.99}
]
}
}
store.name |
"TechMart" |
store.location.city |
"San Jose" |
store.products[0].sku |
"A100" |
store.products[1].price |
49.99 |
Common Errors & How to Fix Them
| Problem | Why It Happens | Fix |
|---|---|---|
| Result is blank / empty | The path doesn't match any key in the JSON. Common causes: wrong case, typo in key name, or path doesn't reflect the actual structure. | Double-check the key names (JSON is case-sensitive). Use the JSON Formatter to see the structure clearly. |
| "Cannot read property of undefined" | You're trying to access a nested property, but the parent doesn't exist or is null. | Start with a shallower path to verify each level exists, then go deeper step by step. |
| Array index out of bounds | The array index you specified (e.g. [5]) exceeds the actual array length. | Remember arrays are 0-indexed. An array of 3 items has indices [0], [1], [2]. |
| Output is [object Object] | The path resolved to a nested object rather than a scalar value. | Extend the path to point to a specific leaf value (e.g. add .name, .id, etc.). |
Next Step After Extracting
Your JSON input and extraction path are processed entirely in your browser. No data is transmitted to any server. You can safely extract values from sensitive JSON payloads — API responses with authentication data, internal configuration files, or datasets containing personally identifiable information — without any data ever leaving your machine.
Path Syntax Guide - How to Extract JSON Data
Basic Syntax
$.key
Extract specific key from object
Nested Access
$.parent.child
Access nested objects
Array Index
$.array[0]
Access array element
Skip $ Prefix
key.subkey
Can omit leading $
Examples
$.name→ "John"$.address.city→ "New York"$.skills[0]→ "JavaScript"$.projects[1].name→ "Project B"
FAQ
What is the difference between JSONPath and XPath?
JSONPath is the JSON version of XPath concept. XPath is for XML documents, JSONPath is for JSON documents.
Main difference: JSONPath uses $ for root (like XPath's /) and . for property access (like XPath's /).
Why is the extraction result empty?
Common reasons:
- JSONPath spelling error
- Key doesn't exist or case mismatch
- Array index out of range
- Input JSON format error
Please verify the JSON structure first, then check if the path is correct.
Can I extract multiple elements from an array?
Yes. Common array operations:
$.items[0]- First element$.items[-1]- Last element$.items[0:3]- First 3 elements (slice)
Common Use Cases
Extract nested data
Pull out values from deep JSON structures
Get array items
Access specific elements by index
Query JSON paths
Use JSONPath for complex data extraction