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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JSONPath Tester & Evaluator — filters, slices, recursive descent | JSON Studio</title>
<meta name="description" content="Test JSONPath expressions against your own JSON and see matches update as you type. Supports wildcards, array slices, recursive descent and filter expressions. Free, client-side, and filters are parsed rather than eval()-ed.">
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<meta property="og:title" content="JSONPath Tester & Evaluator — filters, slices, recursive descent">
<meta property="og:description" content="Test JSONPath expressions against your own JSON and see matches update as you type. Supports wildcards, array slices, recursive descent and filter expressions. Free, client-side, and filters are parsed rather than eval()-ed.">
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<meta name="twitter:description" content="Test JSONPath expressions against your own JSON and see matches update as you type. Supports wildcards, array slices, recursive descent and filter expressions. Free, client-side, and filters are parsed rather than eval()-ed.">
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<script type="application/ld+json">
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"description": "Test JSONPath expressions against your JSON and see matches instantly, with filters, wildcards, slices and recursive descent. Free, client-side."
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{ "@type": "Question", "name": "Which JSONPath syntax is supported?", "acceptedAnswer": { "@type": "Answer", "text": "Root ($), child access (.key and ['key']), array indices including negatives, wildcards ([*] and .*), slices ([1:5]), unions ([0,2]), recursive descent (..), and filters with ==, !=, <, <=, >, >=, =~ combined with && and ||." } },
{ "@type": "Question", "name": "Is it safe to paste a filter expression?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Most JSONPath libraries implement filters by calling eval() or new Function(); this one parses the comparison itself, so no part of your expression is executed as code." } },
{ "@type": "Question", "name": "Why does my path return nothing?", "acceptedAnswer": { "@type": "Answer", "text": "The status line says \"No matches\" rather than failing, which usually means a key name is misspelled or you are filtering on a value type that does not match — for example comparing a string to a number." } }
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{ "@type": "HowToStep", "position": 1, "text": "Paste your JSON on the left." },
{ "@type": "HowToStep", "position": 2, "text": "Type a path in the Path box — start with $ and build up, for example $.store.book[?(@.price < 10)].title." },
{ "@type": "HowToStep", "position": 3, "text": "Read the matches on the right; tick \"Show match paths\" to see where each one came from." }
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</head>
<body>
<div id="site-header"></div>
<span id="top"></span>
<main class="convert-shell">
<div class="convert-head">
<div class="container tool-topbar">
<h1>JSONPath tester</h1>
<p class="tt-sub">Write a path and watch the matches update as you type.</p>
<a class="tt-about" href="#about">About & FAQ ↓</a>
</div>
<div class="container">
<div class="opt-bar">
<div class="opt" style="flex:1;min-width:280px;">
<label for="opt-path">Path</label>
<input type="text" id="opt-path" value="$..*" style="flex:1;font-family:'JetBrains Mono',monospace;">
</div>
<div class="opt">
<input type="checkbox" id="opt-paths">
<label for="opt-paths" style="cursor:pointer;">Show match paths</label>
</div>
<div class="opt">
<input type="checkbox" id="opt-first">
<label for="opt-first" style="cursor:pointer;">First match only</label>
</div>
</div>
</div>
</div>
<div class="convert-grid">
<section class="pane">
<div class="pane-head">
<div class="pane-title">JSON input</div>
<button id="btn-sample">Load sample</button>
<button id="btn-upload">Upload</button>
<button id="btn-clear">Clear</button>
<input type="file" id="file-input" accept=".json,application/json" style="display:none;">
</div>
<div class="pane-body">
<textarea id="input" class="code-area" spellcheck="false" placeholder="{"store": {"book": []}}"></textarea>
</div>
<div class="pane-status" id="in-status">Waiting for input.</div>
</section>
<section class="pane">
<div class="pane-head">
<div class="pane-title">Matches</div>
<button class="primary" id="btn-run">Run</button>
<button id="btn-copy">Copy</button>
<button id="btn-download">Download</button>
</div>
<div class="pane-body">
<textarea id="output" class="code-area" spellcheck="false" readonly placeholder="Matches appear here."></textarea>
<p class="note">Supports <code>$</code> <code>.key</code> <code>['key']</code> <code>[0]</code> <code>[*]</code> <code>[1:5]</code> <code>..</code> and filters like <code>[?(@.price < 10 && @.inStock)]</code>.</p>
</div>
<div class="pane-status" id="out-status"></div>
</section>
</div>
</main>
<section class="tool-home" id="about">
<div class="container">
<div class="th-more">Reference</div>
<header class="th-head">
<div class="kicker">JSONPath tester</div>
<h2>About the JSONPath tester</h2>
<p>JSONPath is to JSON what XPath is to XML: a compact way to reach into a document and pull out the parts you want. This tester evaluates an expression against your payload as you type, so you can build a path incrementally instead of guessing. Notably, filter expressions are parsed rather than handed to eval() — a pasted expression can never execute code in your browser.</p>
<div class="cta-row">
<a class="btn-primary" href="#top">Use the tool ↑</a>
<a class="btn-secondary btn-present" href="presentation.html"><svg class="nav-ico" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.7" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><rect x="3" y="4" width="18" height="13" rx="2"/><path d="M12 17v3M9.5 20h5"/><path d="m10.6 8.8 4 2.7-4 2.7z" fill="currentColor" stroke="none"/></svg> Present it</a>
</div>
</header>
<div class="th-features">
<div class="th-feature">
<div class="fi">01</div>
<h3>Live results</h3>
<p>Matches update as you type, so a path can be built up piece by piece instead of guessed.</p>
</div>
<div class="th-feature">
<div class="fi">02</div>
<h3>Full expression support</h3>
<p>Wildcards, slices, unions, recursive descent and filters with comparisons and boolean operators.</p>
</div>
<div class="th-feature">
<div class="fi">03</div>
<h3>No eval, ever</h3>
<p>Filter expressions are parsed rather than executed — pasting one can never run code in your browser.</p>
</div>
<div class="th-feature">
<div class="fi">04</div>
<h3>Match paths</h3>
<p>Optionally return the path to each match, not just the value, so you can see where it came from.</p>
</div>
</div>
<div class="seo-grid">
<div class="seo-main">
<h3 id="how">How to use it</h3>
<ol class="seo-steps">
<li>Paste your JSON on the left.</li>
<li>Type a path in the Path box — start with $ and build up, for example $.store.book[?(@.price < 10)].title.</li>
<li>Read the matches on the right; tick "Show match paths" to see where each one came from.</li>
</ol>
<h3 id="faq">Questions</h3>
<div class="faq">
<details>
<summary>Which JSONPath syntax is supported?</summary>
<div class="faq-body"><p>Root ($), child access (.key and ['key']), array indices including negatives, wildcards ([*] and .*), slices ([1:5]), unions ([0,2]), recursive descent (..), and filters with ==, !=, <, <=, >, >=, =~ combined with && and ||.</p></div>
</details>
<details>
<summary>Is it safe to paste a filter expression?</summary>
<div class="faq-body"><p>Yes. Most JSONPath libraries implement filters by calling eval() or new Function(); this one parses the comparison itself, so no part of your expression is executed as code.</p></div>
</details>
<details>
<summary>Why does my path return nothing?</summary>
<div class="faq-body"><p>The status line says "No matches" rather than failing, which usually means a key name is misspelled or you are filtering on a value type that does not match — for example comparing a string to a number.</p></div>
</details>
</div>
</div>
<aside class="seo-side">
<div class="seo-card" id="share">
<h3>Share this tool</h3>
<p>Send it to a colleague — the link only, never anything you have pasted in.</p>
<div data-share data-share-title="JSONPath tester — JSON Studio"></div>
</div>
<div class="seo-card">
<h3 class="with-ico"><svg class="nav-ico" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.7" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><rect x="3" y="4" width="18" height="13" rx="2"/><path d="M12 17v3M9.5 20h5"/><path d="m10.6 8.8 4 2.7-4 2.7z" fill="currentColor" stroke="none"/></svg> Present this tool</h3>
<p>Demoing to a client or a class? Press <kbd>Shift</kbd><kbd>P</kbd> for full-screen presentation mode — chrome hidden, type scaled up, laser pointer included.</p>
<a class="seo-link" href="presentation.html">How presentation mode works →</a>
</div>
<div class="seo-card">
<h3>Related tools</h3>
<ul class="seo-related">
<li><a href="tool.html"><span class="ri">{ }</span>JSON to diagram</a></li>
<li><a href="format.html"><span class="ri">⌗</span>Formatter & validator</a></li>
<li><a href="jsonl.html"><span class="ri">≡</span>JSONL ⇄ JSON</a></li>
</ul>
<a class="seo-link" href="tools.html">All 14 tools →</a>
</div>
<div class="seo-card quiet">
<h3>Private by construction</h3>
<p>No backend exists. Everything on this page runs in your browser, so nothing you paste is uploaded, logged or retained.</p>
<a class="seo-link" href="privacy.html">Read the privacy policy →</a>
</div>
</aside>
</div>
</div>
</section>
<div id="site-footer"></div>
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