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JSONPath Evaluator & Expression Tester

Developer Utilities

Comprehensive client-side JSONPath query engine and evaluator. Test JSONPath syntax (RFC 9535) against arbitrary JSON payloads, filter arrays with script expressions (`?(@.price < 10)`), recursively extract keys (`$..author`), and extract matched subsets in real-time without network requests.

100% Client-Side
0 Matches Found
Presets:
Input JSON Document:
Extracted Matches (0):

Zero-Knowledge Privacy Guarantee

This JSONPath Evaluator & Expression Tester executes 100% locally in your browser’s JavaScript memory using client-side Web APIs. No inputs, keys, tokens, files, or outputs are ever uploaded to any server or logged in any database.

Key Features & Capabilities

  • Real-time JSONPath evaluation engine (RFC 9535 compliant)
  • Supports recursive descent ($..), wildcards (*), slices ([0:2]), and filter queries ([?(@.key > val)])
  • Built-in quick templates (Find all items, Recursive search, Filter by condition, Array slicing)
  • Match count and matched nodes inspector
  • 1-click formatted JSON output copy and export

How to Use This Tool

  1. 1Paste your JSON payload into the input editor or load a sample dataset.
  2. 2Enter a JSONPath query (e.g. $.store.book[*].author or $..price).
  3. 3Inspect the extracted results and matching count in real-time.
  4. 4Copy the extracted JSON subset to your clipboard.

Frequently Asked Questions (FAQ)

JSONPath is an expression language for querying and navigating JSON documents, similar to what XPath is for XML.

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