Free Online JSON Query Tool

Query JSON with dot notation, wildcards, recursive descent, array slicing, and bracket notation. Like jq, but in your browser.

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Need more features? The full editor has tree view, TypeScript generation, URL sharing, and more.

What is JSON Querying?

JSON querying is the process of extracting specific data from JSON documents using a query language. Instead of manually parsing the entire JSON structure, you can use powerful syntax to target exactly the data you need.

JSON querying is similar to how CSS selectors work for HTML or how XPath works for XML. It allows you to navigate complex, nested JSON structures with minimal effort.

Whether you're debugging APIs, transforming configuration files, or exploring datasets, JSON querying makes it fast and intuitive to find the data you're looking for—all in your browser, with zero dependencies and no privacy concerns.

Query Syntax Reference

Syntax Description Example
data.name Dot notation to access a property company returns "Acme Corp"
users[0] Array index to access an element employees[0] returns the first employee
users[*] Wildcard to select all array elements or object values employees[*].name returns all names
users[0:3] Array slice (start inclusive, end exclusive) employees[0:2] returns first two employees
..key Recursive descent to find all matching keys ..city finds all cities at any depth
data["key-name"] Bracket notation for keys with special characters offices["hq"] accesses the hq property

Features

⚡
Instant Results
Queries execute instantly in your browser. No API calls, no waiting—results are computed in milliseconds.
🔒
Zero Privacy Concerns
Your data never leaves your computer. All processing happens locally in your browser.
✓
No Installation
Use it immediately in any modern browser. No command-line setup, no configuration files, no dependencies.
🔍
Rich Query Syntax
Dot notation, wildcards, recursive descent, array slicing, bracket notation—everything you need in one tool.
🌐
Shareable Queries
Compress your JSON and queries into URLs for easy sharing and collaboration with teammates.
0️⃣
Zero Dependencies
Lightweight, fast, and reliable. No frameworks, no plugins, just pure JavaScript.

json.express vs jq vs JSONPath

Feature json.express jq JSONPath
Browser-based ✓ ✗ ✓
No installation ✓ ✗ ✓
Dot notation ✓ ✓ ✗
Wildcards ✓ ✓ ✓
Recursive descent ✓ ✓ ✓
Array slicing ✓ ✓ ✓
Bracket notation ✓ ✓ ✓
Private (no servers) ✓ ✓ ✗

Use Cases

  1. API Debugging:

    Query API responses to extract specific fields and debug integration issues.

  2. Configuration Management:

    Navigate large config files and quickly locate settings without manual parsing.

  3. Data Extraction:

    Extract specific subsets of JSON data for reporting, analysis, or data migration.

  4. Testing & QA:

    Verify API response structures and validate data in test suites.

  5. Log Analysis:

    Parse and query JSON-formatted logs to find errors or specific events.

  6. Data Transformation:

    Prepare data for downstream processing by extracting and filtering JSON at scale.

Related Tools
JSON Formatter JSON Validator JSON Viewer JSON Minifier