Which JSONPath features are supported?

It supports the root $, dot and bracket member access, quoted keys like ["title"], numeric array indices including negative ones, and the * wildcard for all array elements or object values. Recursive descent and filter expressions are not included.

How do I select every item in an array?

Use the wildcard: $.books[*] returns every element, and $.books[*].title returns the title of each. The wildcard also matches every value of an object.

How do negative array indices work?

A negative index counts from the end, so $.books[-1] is the last element and $.books[-2] is the second to last — the same convention as Python slicing.

How do I access a key with a space or special character?

Use bracket notation with quotes, for example $["full name"] or $.store["book title"]. This works for any key that is awkward to write with a dot.

Are filters and recursive descent supported?

No. This tester covers the root, member access, array indices and the wildcard. Filter expressions like [?(@.price < 10)] and recursive descent (..) are intentionally not included.

Is my JSON sent to a server?

No. Parsing and evaluation happen entirely in your browser using JavaScript — your data never leaves the page.

Why do I get no matches?

Check that the path matches the structure exactly. Keys are case-sensitive, and a wildcard or index only matches arrays or objects of the right shape. The tool returns an empty list rather than an error when nothing matches.

JSONPath Tester — Gera Tools

Q: Is my JSON sent to a server?

No. Parsing and evaluation happen entirely in your browser using JavaScript — your data never leaves the page.

Q: Why do I get no matches?

Check that the path matches the structure exactly. Keys are case-sensitive, and a wildcard or index only matches arrays or objects of the right shape. The tool returns an empty list rather than an error when nothing matches.

Test JSONPath without leaving your browser

JSONPath is a query language for pulling specific values out of a JSON document — the JSON equivalent of XPath for XML. Paste a document, type an expression, and instantly see which values it selects. It is useful for building API integrations, debugging config files, or learning how JSONPath traversal works.

How it works

The expression is evaluated left to right against your parsed JSON, starting from the root $. Each segment narrows the set of matches, and the final values are shown as a JSON array that updates as you type.

Syntax	Meaning
`$`	the root document
`.key` / `["key"]`	a member by name
`[0]`	an array element by index
`[-1]`	last element (negative counts from the end)
`[*]`	every element of an array or value of an object

Recursive descent (..) and filter expressions are not included.

Example

Given this JSON:

{ "store": { "books": [
  { "title": "A", "price": 5 },
  { "title": "B", "price": 8 }
] } }

the expression $.store.books[*].title matches both titles and returns:

["A", "B"]

$.store.books[-1].price returns [8]. All evaluation runs client-side — your JSON is never uploaded anywhere.