Password Generator Chrome extension

{
  "manifest_version": 3,
  "name": "Password Generator",
  "version": "1.0.0",
  "description": "Generate strong, configurable passwords and copy them to the clipboard without leaving the tab.",
  "icons": {
    "16": "icons/icon.svg",
    "48": "icons/icon.svg",
    "128": "icons/icon.svg"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Password Generator",
    "default_icon": {
      "128": "icons/icon.svg"
    }
  }
}

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Password Generator</title>
<link rel="stylesheet" href="popup.css" />
</head>
<body>
<header><h1>Password Generator</h1><p class="sub">Built with ManifestGo</p></header>
<main>
<div class="big" id="out">••••••••</div>
  <label class="muted">Length <span id="len">16</span></label>
  <input id="length" type="range" min="8" max="48" value="16" />
  <div class="row"><button id="sym">Symbols: on</button><button id="num">Numbers: on</button></div>
  <button class="primary" id="gen">Generate & copy</button>
</main>
<script src="popup.js"></script>
</body>
</html>

:root { color-scheme: dark; }
* { box-sizing: border-box; }
body {
  margin: 0;
  width: 320px;
  font-family: Inter, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #1b1b1b;
  color: #f2efe9;
}
header { padding: 14px 16px 8px; }
h1 { margin: 0; font-size: 14px; font-weight: 600; letter-spacing: -0.01em; }
p.sub { margin: 4px 0 0; font-size: 11px; color: #9a958d; }
main { padding: 10px 16px 16px; display: grid; gap: 10px; }
button {
  font: inherit; font-size: 12px; font-weight: 600; cursor: pointer;
  border: 1px solid #ffffff1f; background: #ffffff0d; color: #f2efe9;
  border-radius: 10px; padding: 9px 12px; transition: background .15s ease;
}
button:hover { background: #ffffff17; }
button.primary { background: #34d399; border-color: #34d399; color: #101010; }
button.primary:hover { filter: brightness(1.08); }
input, select, textarea {
  font: inherit; font-size: 12px; width: 100%; padding: 9px 10px; border-radius: 10px;
  border: 1px solid #ffffff1f; background: #ffffff08; color: #f2efe9; outline: none;
}
input:focus, textarea:focus { border-color: #34d399; }
ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; max-height: 260px; overflow: auto; }
li { display: flex; align-items: center; gap: 8px; font-size: 12px; padding: 8px 10px; border-radius: 10px; background: #ffffff08; }
li span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row { display: flex; gap: 8px; }
.row > * { flex: 1; }
.big { font-size: 34px; font-weight: 700; text-align: center; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.muted { font-size: 11px; color: #9a958d; }

const out = document.getElementById("out");
const length = document.getElementById("length");
const lenLabel = document.getElementById("len");
const symBtn = document.getElementById("sym");
const numBtn = document.getElementById("num");
let symbols = true, numbers = true;

length.addEventListener("input", () => { lenLabel.textContent = length.value; });
symBtn.addEventListener("click", () => { symbols = !symbols; symBtn.textContent = "Symbols: " + (symbols ? "on" : "off"); });
numBtn.addEventListener("click", () => { numbers = !numbers; numBtn.textContent = "Numbers: " + (numbers ? "on" : "off"); });

document.getElementById("gen").addEventListener("click", async () => {
  let set = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ";
  if (numbers) set += "23456789";
  if (symbols) set += "!@#$%^&*()-_=+[]{}";
  const bytes = crypto.getRandomValues(new Uint32Array(Number(length.value)));
  const pwd = Array.from(bytes, (b) => set[b % set.length]).join("");
  out.textContent = pwd;
  out.style.fontSize = pwd.length > 24 ? "16px" : "22px";
  await navigator.clipboard.writeText(pwd);
});

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" width="128" height="128"><rect width="128" height="128" rx="26" fill="#34d399"/><text x="64" y="90" font-family="Inter, Arial, sans-serif" font-size="66" font-weight="700" text-anchor="middle" fill="#ffffff">K</text></svg>

# Password Generator

Generate strong, configurable passwords and copy them to the clipboard without leaving the tab.

## Install (unpacked)
1. Open `chrome://extensions`.
2. Enable **Developer mode**.
3. Click **Load unpacked** and select this folder.

## Files
- `manifest.json` — Manifest V3 configuration
- `popup.html` / `popup.css` / `popup.js` — toolbar popup UI and logic
- `icons/icon.svg` — source icon (rasterized to PNG on download)