JSONPath Tester

Evaluate JSONPath queries against JSON in your browser with LocalKit. Probe payloads locally—documents stay on-device with nothing uploaded for computation.

Interactive controls load with JavaScript. Processing stays in your browser—nothing is uploaded.

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How to use

  1. Open the tool — Open this LocalKit page and wait for the interactive controls to load.
  2. Provide input — Paste or type your content (or set options). Data stays in the browser.
  3. Run the action — Use the primary button or live controls to generate the result.
  4. Copy the result — Copy the output into your editor, terminal, or documents.

Limits

Requires JavaScript. Extremely large inputs may slow the browser tab. Results depend on your browser APIs; there is no server-side processing quota because nothing is uploaded.

When to use

When you want a quick, free utility without creating an account or sending content to an online converter.

When not to use

When you need server-side integration, batch automation at scale, or certified compliance tooling.

Privacy note

Tool inputs are processed in your browser only. Theme, language and favorites may use localStorage; hosting may keep standard access logs (IP, UA, URL) without tool payloads.

FAQ（5）

Which JSONPath dialect?

Uses JSONPath Plus (self-hosted). Paths like $.store.book[*].author are supported.

Empty result?

Check spelling, brackets, and that the root matches your document.

Uploaded?

No—the query runs locally against the pasted JSON.

Filter expressions?

Many Plus filters work; unsupported syntax shows a clear error.

Offline?

Yes after the vendor script is cached.