About Us

JSONPathHub does exactly one job: runs JSONPath queries against a JSON document with live autocomplete and syntax error detection. That is the whole of the site. No account, no newsletter, and no wall between you and the number you came for.

Why JSONPathHub exists

Plenty of developer pages already exist. Most of them make you dismiss a banner, ignore a modal and scroll past filler before the tool appears. JSONPathHub inverts that: the tool is the page, it runs JSONPath queries against a JSON document with live autocomplete and syntax error detection, and everything else is explanation you can read or skip.

How the maths is done

The calculation happens in your browser, not on a server. Specifically, it evaluates the path expression against the document tree and returns the matching nodes, reporting the point where a malformed expression breaks rather than failing silently. The method is documented rather than concealed, so you can reproduce a result by hand and see exactly where any difference comes from.

Privacy, by design

This is a local tool by construction. The document and query you paste never leave your device; there is no endpoint to receive them and no log to read them back from. Disconnecting from the internet after the page loads changes nothing about how it behaves.

Who this is for

• programmers tidying up a payload or a schema.
• engineers debugging something at short notice.
• anyone who would rather not paste a token into a server.

Who pays for this

Advertising pays for the running of JSONPathHub; nothing here is subscription-based. No advertiser is given the values you enter, and an advert appearing beside a tool is never a recommendation of it.

Reaching us

Found an error, or want a feature we do not have yet? Write to us through the contact page — feedback from people who actually use the JSONPath tester is how it gets better.