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JSONPath Tester & Query Expression Evaluator

Evaluate, test, and debug JSONPath queries ($, .., @, [?()], filters) against complex JSON structures in real-time with instant matching nodes extraction.

Sample Queries:
Target JSON Document939 bytes
Extracted JSONPath Results
[
  "Nigel Rees",
  "Evelyn Waugh",
  "Herman Melville",
  "J. R. R. Tolkien"
]
Matched Nodes4
JSON Payload Size939 B
Query StatusValid
Query DepthDirect

Zero Cloud Leakage

Your sensitive production JSON documents and API payloads are parsed and evaluated completely inside your local browser runtime.

Full Expression Grammar

Supports root `$`, recursive descent `..`, wildcards `*`, bracket slices `[start:end]`, and boolean filters `[?(@.price < 10)]`.

High-Throughput Node Extraction

Instantly matches and flattens node targets with zero server latency or network round-trips.

Technical Reference & Architecture Guide

JSONPath Query Expression Technical Guide — Reference Guide

Master JSONPath query syntax, filter operators, recursive descent selectors, and slice notation for querying nested JSON trees client-side.

Key Parameters & Controls

querystring

JSONPath query expression (e.g. $.store.book[?(@.price < 10)]).

jsonInputstring | object

Target JSON document parsed into an abstract object tree.

resultFormatenum ('values' | 'paths')

Return extracted values or their absolute JSONPath addressing strings.

safeModeboolean

Prevent evaluation errors by handling missing properties gracefully.

Pro Tips & Best Practices

Use the recursive descent selector (..) to search for attributes across any nesting depth, e.g. $..author.

Leverage filter predicates [?(@.property == value)] to query arrays by internal item properties.

Use array slice notation [0:5] to select ranges or negative indices [-1] for tail items.

Common Gotchas & Troubleshooting

Ensure array bracket notation [*] is used when targeting collections rather than dot notation.

Remember that @ refers to the current node being evaluated inside the predicate [?(...)]

Frequently Asked Questions

Is my JSON payload sent to a cloud endpoint?▼

No. The entire JSONPath evaluation engine runs in browser memory with zero network calls.

Does this support standard JSONPath syntax?▼

Yes, including $, .., @, wildcard *, array slices, and logical filter operators (==, !=, <, >, &&, ||).

Can I query deeply nested objects?▼

Yes, recursive descent (..) seamlessly traverses arbitrary depths.

How large can the JSON document be?▼

It easily parses and queries megabyte-sized JSON payloads in real time.

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