JSON Path Finder — JSONPath Expression Evaluator
Evaluate JSONPath expressions against JSON to find matching values. Supports dot notation, recursive descent, wildcards, array slicing, union, and filter expressions. Shows each match with its full resolved path. 100% client-side and free.
How to Use JSON Path Finder — JSONPath Expression Evaluator
How to Use the JSON Path Finder
Step 1: Paste Your JSON
Paste any valid JSON into the left input panel. The tool accepts JSON objects, arrays, and nested structures of any depth. Use one of the built-in examples to get started quickly — each example loads both the JSON and a matching expression.
Step 2: Enter a JSONPath Expression
Type your JSONPath expression in the input field on the right. All expressions start with $ (the root). The tool evaluates your expression in real time as you type — no button click required.
Step 3: Read the Results
Each matching value is displayed in its own card showing:
- The resolved path (e.g.,
$.users[0].name) — the exact location of the value in the JSON tree - The value type (string, number, boolean, object, array, null)
- The value itself, formatted as JSON
Step 4: Copy Individual Results
Each result card has two copy buttons:
- path — copies the resolved JSONPath string (useful for use in code)
- value — copies the matched value as a JSON string
Step 5: Copy All Results
Click Copy All to copy all matches as a JSON array of { path, value } objects. This is useful for documentation or passing results to another tool.
Step 6: Load Examples
Click any example button below the expression input to load a pre-built JSON + expression pair:
- User Names — extract all names from a users array with
$.users[*].name - Recursive Hosts — find all host values anywhere in a nested config with
$..host - Array Slice — extract a range of products with
$.products[1:3].name - Filter Expression — filter orders by status with
$.orders[?(@.status == "shipped")].id
Common Use Cases:
- API development: Verify response structure by querying sample payloads
- Data extraction: Pull specific fields from large JSON blobs
- Configuration inspection: Find all values for a specific key across a deeply nested config
- Debugging: Explore unfamiliar JSON structures by querying paths incrementally
- Documentation: Discover and document the exact paths to values in an API response
- Test fixture writing: Find the paths you need to assert in test code
Tips and Best Practices:
- Start with
$— all valid JSONPath expressions begin with the dollar sign (root) - Use
$..key(double dot) for recursive search across all nesting levels - Use
[*]to iterate all elements of an array or all values of an object - Combine segments:
$.users[*].address.citydrills into nested objects within an array - Filter expressions support
==,!=,>,<,>=,<=operators - Use
[-1]to select the last element of an array - Array slices use Python-style notation:
[1:4]returns elements at indices 1, 2, 3 - Click the resolved path in any result to understand exactly where the value lives
- The syntax reference card at the bottom is always visible as a quick reminder
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