pick-cli 0.1.25

Extract, filter, and transform values from JSON, YAML, TOML, .env, HTTP headers, logfmt, CSV, and more
Documentation
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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>pick — Extract, filter, and transform values from anything</title>
  <meta name="description" content="A universal CLI tool to extract, filter, and transform values from JSON, YAML, TOML, .env, HTTP headers, logfmt, CSV, and more. Pipes, filters, mutations, output conversion, and JSONL streaming.">
  <meta property="og:title" content="pick — Extract, filter, and transform values from anything">
  <meta property="og:description" content="One tool to replace jq, yq, grep, awk, and cut. Auto-detects format, pipes, filters, mutations, output conversion, and streaming.">
  <meta property="og:type" content="website">
  <meta property="og:url" content="https://pick-cli.pages.dev">
  <link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>%E2%9E%9C</text></svg>">
  <style>
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      --fg: #e4e4e7;
      --muted: #71717a;
      --accent: #3b82f6;
      --green: #22c55e;
      --surface: #18181b;
      --border: #27272a;
      --code-bg: #111113;
      --radius: 8px;
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    * { margin: 0; padding: 0; box-sizing: border-box; }

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    .container {
      max-width: 720px;
      margin: 0 auto;
      padding: 0 24px;
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    /* Nav */
    nav {
      padding: 20px 0;
      border-bottom: 1px solid var(--border);
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    nav .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    nav .logo {
      font-size: 18px;
      font-weight: 700;
      color: var(--fg);
      text-decoration: none;
      font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    }
    nav .links {
      display: flex;
      gap: 24px;
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    nav .links a {
      color: var(--muted);
      text-decoration: none;
      font-size: 14px;
      transition: color 0.15s;
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    nav .links a:hover { color: var(--fg); }
    nav .links .sponsor-link {
      color: #db61a2;
      border: 1px solid #db61a2;
      border-radius: var(--radius);
      padding: 4px 12px;
      font-weight: 500;
      transition: all 0.15s;
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    nav .links .sponsor-link:hover {
      background: #db61a2;
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    /* Hero */
    .hero {
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    .hero h1 {
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      font-weight: 800;
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      line-height: 1.1;
      margin-bottom: 16px;
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    .hero h1 span { color: var(--accent); }
    .hero p {
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      font-size: 18px;
      max-width: 540px;
      margin: 0 auto 32px;
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    /* Install box */
    .install {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      margin-bottom: 12px;
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    .install code {
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    /* Demo */
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      border: 1px solid var(--border);
      border-radius: 12px;
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    .terminal-bar {
      display: flex;
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      border: none;
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      cursor: pointer;
      transition: color 0.15s;
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      display: flex;
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    .terminal-bar .copy-term svg { width: 16px; height: 16px; }
    .terminal-bar .copy-term.copied svg.icon-copy { display: none; }
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    .terminal-body .line { display: block; }
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    .terminal-body .cmd { color: var(--fg); cursor: pointer; border-radius: 3px; transition: background 0.15s; }
    .terminal-body .cmd:hover { background: rgba(255,255,255,0.06); }
    .terminal-body .comment { color: var(--muted); }
    .terminal-body .output { color: #a1a1aa; }
    .copied-toast {
      position: fixed;
      bottom: 24px;
      right: 24px;
      background: var(--green);
      color: #000;
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      border-radius: var(--radius);
      font-size: 13px;
      font-weight: 600;
      opacity: 0;
      transform: translateY(8px);
      transition: all 0.2s;
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    .copied-toast.show {
      opacity: 1;
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    /* Sections */
    section {
      padding: 60px 0;
      border-top: 1px solid var(--border);
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    section h2 {
      font-size: 28px;
      font-weight: 700;
      letter-spacing: -0.5px;
      margin-bottom: 32px;
    }
    section h3.section-sub {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 16px;
      margin-top: 32px;
    }

    /* Format grid */
    .formats {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 12px;
    }
    .format-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 16px;
    }
    .format-card h3 {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 4px;
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    .format-card p {
      color: var(--muted);
      font-size: 13px;
    }

    /* Selectors */
    .selector-table {
      width: 100%;
      border-collapse: collapse;
    }
    .selector-table td {
      padding: 10px 0;
      border-bottom: 1px solid var(--border);
      font-size: 15px;
    }
    .selector-table td:first-child {
      font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
      color: var(--accent);
      width: 280px;
      font-size: 14px;
    }
    .selector-table td:last-child {
      color: var(--muted);
    }

    /* Operator table */
    .op-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 12px;
    }
    .op-table td {
      padding: 8px 0;
      border-bottom: 1px solid var(--border);
      font-size: 14px;
    }
    .op-table td:first-child {
      font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
      color: var(--accent);
      width: 200px;
      font-size: 13px;
    }
    .op-table td:last-child {
      color: var(--muted);
    }

    /* Flags */
    .flag-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
    }
    .flag {
      padding: 12px 16px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
    }
    .flag code {
      font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
      font-size: 13px;
      color: var(--accent);
    }
    .flag p {
      color: var(--muted);
      font-size: 13px;
      margin-top: 4px;
    }

    /* Example blocks */
    .example-block {
      background: var(--code-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 16px 20px;
      font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
      font-size: 13px;
      line-height: 1.8;
      overflow-x: auto;
      margin-top: 12px;
      margin-bottom: 16px;
    }
    .example-block .prompt { color: var(--green); }
    .example-block .comment { color: var(--muted); }
    .example-block .output { color: #a1a1aa; }

    /* Install grid */
    .install-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .install-method {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 16px;
    }
    .install-method h3 {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 2px;
    }
    .install-method p {
      color: var(--muted);
      font-size: 12px;
      margin-bottom: 8px;
    }
    .install-method code {
      font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
      font-size: 12px;
      color: var(--green);
      cursor: pointer;
      border-radius: 3px;
      transition: background 0.15s;
    }
    .install-method code:hover { background: rgba(255,255,255,0.06); }

    /* Footer */
    footer {
      padding: 40px 0;
      border-top: 1px solid var(--border);
      text-align: center;
      color: var(--muted);
      font-size: 13px;
    }
    footer a {
      color: var(--muted);
      text-decoration: none;
    }
    footer a:hover { color: var(--fg); }

    /* Responsive */
    @media (max-width: 600px) {
      .hero h1 { font-size: 32px; }
      .hero p { font-size: 16px; }
      .flag-grid { grid-template-columns: 1fr; }
      .install-grid { grid-template-columns: 1fr; }
      .install code { font-size: 13px; padding: 10px 14px; }
      .terminal-body { font-size: 12px; padding: 16px; }
      .selector-table td:first-child { width: 160px; }
      .op-table td:first-child { width: 140px; }
      .example-block { font-size: 11px; padding: 12px 14px; }
    }
  </style>
</head>
<body>

<nav>
  <div class="container">
    <a href="/" class="logo">pick</a>
    <div class="links">
      <a href="https://github.com/aryanbhosale/pick">GitHub</a>
      <a href="https://crates.io/crates/pick-cli">crates.io</a>
      <a href="https://www.npmjs.com/package/@aryanbhosale/pick">npm</a>
      <a href="https://github.com/sponsors/aryanbhosale" class="sponsor-link">Sponsor</a>
    </div>
  </div>
</nav>

<div class="container">

  <div class="hero">
    <h1>Extract, filter, and transform <span>anything</span></h1>
    <p>One tool to replace jq, yq, grep, awk, and cut. Pipes, filters, mutations, output conversion, and JSONL streaming.</p>
    <div class="install">
      <code id="install-cmd">cargo install pick-cli</code>
      <button onclick="copy()" id="copy-btn" title="Copy to clipboard">Copy</button>
    </div>
    <div class="sub">macOS, Linux, Windows &middot; MIT License &middot; <a href="#install-section" style="color:var(--accent);text-decoration:none">all install methods</a></div>
  </div>

  <div class="demo">
    <div class="terminal">
      <div class="terminal-bar">
        <div class="terminal-dot"></div>
        <div class="terminal-dot"></div>
        <div class="terminal-dot"></div>
        <span>Terminal</span>
        <button class="copy-term" onclick="copyBlock(this)"><svg class="icon-copy" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><rect x="9" y="9" width="13" height="13" rx="2" ry="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg><svg class="icon-check" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7"/></svg></button>
      </div>
      <div class="terminal-body">
<span class="line"><span class="comment"># Extract from JSON</span></span>
<span class="line"><span class="prompt">$</span> <span class="cmd">curl -s api.github.com/users/octocat | pick login</span></span>
<span class="line"><span class="output">octocat</span></span>

<span class="line gap"><span class="comment"># Pipe through filters</span></span>
<span class="line"><span class="prompt">$</span> <span class="cmd">cat data.json | pick 'users | select(age > 21) | name'</span></span>
<span class="line"><span class="output">Alice</span></span>
<span class="line"><span class="output">Charlie</span></span>

<span class="line gap"><span class="comment"># Array slicing</span></span>
<span class="line"><span class="prompt">$</span> <span class="cmd">cat items.json | pick 'items[0:3] | name'</span></span>
<span class="line"><span class="output">first</span></span>
<span class="line"><span class="output">second</span></span>
<span class="line"><span class="output">third</span></span>

<span class="line gap"><span class="comment"># Mutate and convert output format</span></span>
<span class="line"><span class="prompt">$</span> <span class="cmd">cat config.json | pick 'set(env, "prod")' -o yaml</span></span>
<span class="line"><span class="output">env: prod</span></span>
<span class="line"><span class="output">port: 8080</span></span>

<span class="line gap"><span class="comment"># Stream JSONL logs</span></span>
<span class="line"><span class="prompt">$</span> <span class="cmd">cat events.jsonl | pick --stream 'select(level == "error") | message'</span></span>
<span class="line"><span class="output">connection timeout</span></span>
<span class="line"><span class="output">disk full</span></span>

<span class="line gap"><span class="comment"># Recursive descent</span></span>
<span class="line"><span class="prompt">$</span> <span class="cmd">cat package.json | pick '..name'</span></span>
<span class="line"><span class="output">my-app</span></span>
<span class="line"><span class="output">lodash</span></span>
<span class="line"><span class="output">express</span></span>
      </div>
    </div>
  </div>

  <section>
    <h2>8 formats, zero config</h2>
    <div class="formats">
      <div class="format-card">
        <h3>JSON</h3>
        <p>Objects, arrays, nested structures</p>
      </div>
      <div class="format-card">
        <h3>YAML</h3>
        <p>Config files, Kubernetes manifests</p>
      </div>
      <div class="format-card">
        <h3>TOML</h3>
        <p>Cargo.toml, pyproject.toml</p>
      </div>
      <div class="format-card">
        <h3>.env</h3>
        <p>Environment variable files</p>
      </div>
      <div class="format-card">
        <h3>HTTP Headers</h3>
        <p>curl -I output, response headers</p>
      </div>
      <div class="format-card">
        <h3>logfmt</h3>
        <p>Structured log lines</p>
      </div>
      <div class="format-card">
        <h3>CSV / TSV</h3>
        <p>Tabular data with headers</p>
      </div>
      <div class="format-card">
        <h3>Plain text</h3>
        <p>Key-value fallback and substring search</p>
      </div>
    </div>
  </section>

  <section>
    <h2>Selector syntax</h2>
    <table class="selector-table">
      <tr><td>foo</td><td>Top-level key</td></tr>
      <tr><td>foo.bar</td><td>Nested key</td></tr>
      <tr><td>foo[0]</td><td>Array index</td></tr>
      <tr><td>foo[-1]</td><td>Last element</td></tr>
      <tr><td>foo[1:3]</td><td>Array slice (elements 1, 2)</td></tr>
      <tr><td>foo[:2]</td><td>First two elements</td></tr>
      <tr><td>foo[-2:]</td><td>Last two elements</td></tr>
      <tr><td>foo[*].name</td><td>Pluck field from all elements</td></tr>
      <tr><td>..key</td><td>Recursive descent &mdash; find key anywhere</td></tr>
      <tr><td>name, age</td><td>Multiple selectors (union)</td></tr>
      <tr><td>[0]</td><td>Index into root array</td></tr>
      <tr><td>"dotted.key".sub</td><td>Quoted key for dots in names</td></tr>
    </table>
  </section>

  <section>
    <h2>Pipes &amp; Filters</h2>
    <p style="color:var(--muted);margin-bottom:24px;">Chain operations with the pipe operator. Filter arrays with <code style="color:var(--accent);font-family:'SF Mono','Fira Code','Consolas',monospace;font-size:14px;">select()</code> using comparison operators, regex, and boolean logic.</p>

    <div class="example-block">
<span class="comment"># Chain operations with pipes</span>
<span class="prompt">$</span> echo '{"users":[{"name":"Alice","age":30},{"name":"Bob","age":17}]}' \
  | pick 'users | select(age >= 18) | name'
<span class="output">Alice</span>

<span class="comment"># Regex matching</span>
<span class="prompt">$</span> echo '{"items":[{"id":"abc-123"},{"id":"def-456"},{"id":"abc-789"}]}' \
  | pick 'items | select(id ~ "^abc") | id'
<span class="output">abc-123</span>
<span class="output">abc-789</span>

<span class="comment"># Boolean logic</span>
<span class="prompt">$</span> echo '{"users":[{"name":"Alice","active":true,"role":"admin"}]}' \
  | pick 'users | select(active == true and role == "admin") | name'
<span class="output">Alice</span>
    </div>

    <h3 class="section-sub">Filter operators</h3>
    <table class="op-table">
      <tr><td>==, !=</td><td>Equality / inequality</td></tr>
      <tr><td>&gt;, &lt;, &gt;=, &lt;=</td><td>Numeric comparisons</td></tr>
      <tr><td>~</td><td>Regex match</td></tr>
      <tr><td>and, or, not</td><td>Boolean combinators</td></tr>
    </table>
  </section>

  <section>
    <h2>Builtins</h2>
    <p style="color:var(--muted);margin-bottom:24px;">Built-in functions for introspection and aggregation, usable anywhere in a pipeline.</p>

    <table class="op-table">
      <tr><td>keys()</td><td>Object keys as array</td></tr>
      <tr><td>values()</td><td>Object values as array</td></tr>
      <tr><td>length()</td><td>Length of array, object, or string</td></tr>
    </table>

    <div class="example-block" style="margin-top:16px;">
<span class="prompt">$</span> echo '{"a":1,"b":2,"c":3}' | pick 'keys()'
<span class="output">a</span>
<span class="output">b</span>
<span class="output">c</span>

<span class="prompt">$</span> echo '{"a":1,"b":2,"c":3}' | pick 'keys() | length()'
<span class="output">3</span>
    </div>
  </section>

  <section>
    <h2>Mutation</h2>
    <p style="color:var(--muted);margin-bottom:24px;">Immutable tree operations &mdash; <code style="color:var(--accent);font-family:'SF Mono','Fira Code','Consolas',monospace;font-size:14px;">set()</code> adds or replaces keys, <code style="color:var(--accent);font-family:'SF Mono','Fira Code','Consolas',monospace;font-size:14px;">del()</code> removes them. Both return the full modified document.</p>

    <div class="example-block">
<span class="comment"># Set a value</span>
<span class="prompt">$</span> echo '{"name":"Alice"}' | pick 'set(role, "admin")' --json
<span class="output">{"name":"Alice","role":"admin"}</span>

<span class="comment"># Delete a key</span>
<span class="prompt">$</span> echo '{"name":"Alice","tmp":true}' | pick 'del(tmp)' --json
<span class="output">{"name":"Alice"}</span>

<span class="comment"># Chain mutations in a pipeline</span>
<span class="prompt">$</span> echo '{"a":1}' | pick 'set(b, 2) | del(a)' --json
<span class="output">{"b":2}</span>
    </div>
  </section>

  <section>
    <h2>Output formats</h2>
    <p style="color:var(--muted);margin-bottom:24px;">Convert between formats on the fly with <code style="color:var(--accent);font-family:'SF Mono','Fira Code','Consolas',monospace;font-size:14px;">-o / --output</code>. Input format is auto-detected; output format is your choice.</p>

    <div class="example-block">
<span class="comment"># JSON to YAML</span>
<span class="prompt">$</span> echo '{"name":"Alice","age":30}' | pick -o yaml
<span class="output">age: 30</span>
<span class="output">name: Alice</span>

<span class="comment"># YAML to TOML</span>
<span class="prompt">$</span> cat config.yaml | pick server -o toml
<span class="output">host = "localhost"</span>
<span class="output">port = 8080</span>

<span class="comment"># Any format to JSON</span>
<span class="prompt">$</span> cat .env | pick -o json
<span class="output">{"DATABASE_URL":"postgres://...","PORT":"3000"}</span>
    </div>
  </section>

  <section>
    <h2>JSONL streaming</h2>
    <p style="color:var(--muted);margin-bottom:24px;">Process newline-delimited JSON line by line with <code style="color:var(--accent);font-family:'SF Mono','Fira Code','Consolas',monospace;font-size:14px;">--stream</code>. Each line is parsed and queried independently &mdash; perfect for log files and event streams.</p>

    <div class="example-block">
<span class="prompt">$</span> cat events.jsonl | pick --stream 'select(status >= 400) | url'
<span class="output">/api/broken-endpoint</span>
<span class="output">/api/timeout</span>

<span class="prompt">$</span> cat metrics.jsonl | pick --stream 'select(cpu > 90) | host'
<span class="output">server-3</span>
<span class="output">server-7</span>
    </div>
  </section>

  <section>
    <h2>Flags</h2>
    <div class="flag-grid">
      <div class="flag">
        <code>-i, --input &lt;format&gt;</code>
        <p>Force input format</p>
      </div>
      <div class="flag">
        <code>-o, --output &lt;format&gt;</code>
        <p>Output as json, yaml, or toml</p>
      </div>
      <div class="flag">
        <code>-f, --file &lt;path&gt;</code>
        <p>Read from file instead of stdin</p>
      </div>
      <div class="flag">
        <code>--stream</code>
        <p>JSONL line-by-line mode</p>
      </div>
      <div class="flag">
        <code>--json</code>
        <p>Output as JSON</p>
      </div>
      <div class="flag">
        <code>--lines</code>
        <p>One element per line</p>
      </div>
      <div class="flag">
        <code>-1, --first</code>
        <p>Only first result</p>
      </div>
      <div class="flag">
        <code>-d, --default &lt;val&gt;</code>
        <p>Fallback value</p>
      </div>
      <div class="flag">
        <code>-e, --exists</code>
        <p>Exit code only (0/1)</p>
      </div>
      <div class="flag">
        <code>-c, --count</code>
        <p>Count matches</p>
      </div>
      <div class="flag">
        <code>-r, --raw</code>
        <p>No quotes on strings</p>
      </div>
      <div class="flag">
        <code>-q, --quiet</code>
        <p>Suppress errors</p>
      </div>
    </div>
  </section>

  <section id="install-section">
    <h2>Install</h2>
    <div class="install-grid">
      <div class="install-method">
        <h3>Cargo</h3>
        <p>Rust ecosystem</p>
        <code class="cmd">cargo install pick-cli</code>
      </div>
      <div class="install-method">
        <h3>Homebrew</h3>
        <p>macOS &amp; Linux</p>
        <code class="cmd">brew install aryanbhosale/pick/pick</code>
      </div>
      <div class="install-method">
        <h3>npm</h3>
        <p>Node.js ecosystem</p>
        <code class="cmd">npm install -g @aryanbhosale/pick</code>
      </div>
      <div class="install-method">
        <h3>Snap</h3>
        <p>Linux</p>
        <code class="cmd">snap install pick-cli</code>
      </div>
      <div class="install-method">
        <h3>Chocolatey</h3>
        <p>Windows</p>
        <code class="cmd">choco install pick</code>
      </div>
      <div class="install-method">
        <h3>WinGet</h3>
        <p>Windows</p>
        <code class="cmd">winget install aryanbhosale.pick</code>
      </div>
      <div class="install-method">
        <h3>Docker</h3>
        <p>Any platform</p>
        <code class="cmd">docker run -i ghcr.io/aryanbhosale/pick</code>
      </div>
      <div class="install-method">
        <h3>GitHub Releases</h3>
        <p>Pre-built binaries</p>
        <a href="https://github.com/aryanbhosale/pick/releases" style="color:var(--accent);font-size:13px;font-family:'SF Mono','Fira Code','Consolas',monospace">Download &rarr;</a>
      </div>
    </div>
  </section>

</div>

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