JQ Playground

Write jq-like expressions to filter, transform, and query JSON data in real-time. Runs entirely in your browser.

Examples:
 
Click "Run" or press Ctrl+Enter to execute the query.

About JQ Playground

jq is the de facto standard for querying and transforming JSON on the command line. This playground lets you experiment with jq expressions right in your browser without installing anything. Paste any JSON, write a query, and see results instantly.

Supported Operations

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Frequently Asked Questions

What is jq and what is it used for?▼
jq is a lightweight command-line JSON processor. It allows you to filter, transform, and extract data from JSON using a powerful query language. It's commonly used for parsing API responses, processing log files, and transforming data formats in shell scripts and CI/CD pipelines.
Does this JQ Playground work exactly like the real jq command?▼
This playground implements the most commonly used jq operations in pure JavaScript, including dot notation, pipes, array slicing, select, map, sort_by, group_by, unique, keys, values, length, type, has, and recursive descent. Some advanced jq features like custom functions (def), try-catch, and string interpolation are not supported.
Is my JSON data safe in this tool?▼
Yes. This JQ Playground runs entirely in your browser using JavaScript. Your JSON data never leaves your computer and nothing is sent to any server. All query processing happens client-side.
What are the most useful jq expressions to learn first?▼
Start with dot notation (.key) to access fields, pipes (|) to chain operations, array iteration (.[]) to process arrays, and select() to filter items. These four operations cover most real-world jq use cases. Then learn map(), sort_by(), and object construction ({key: .value}).
Can I use this tool to learn jq before installing it?▼
Absolutely. This playground is ideal for learning jq. Use the preset examples to see how different expressions work, modify queries in real-time, and experiment with your own JSON data. The instant feedback makes it much faster than learning on the command line.
Keyboard Shortcuts
Ctrl+Enter Run query
Ctrl+Shift+C Copy output
Ctrl+L Clear