flaxyaw.github.io/reverse.html at main · flaxyaw/flaxyaw.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>github email getter (minimal)</title>


  <style>
    body {
      background: #0d1117;
      color: #c9d1d9;
      font-family: monospace;
      padding: 20px;
    }

    h1 {
      margin-bottom: 10px;
    }

    input, button {
      background: #161b22;
      color: #c9d1d9;
      border: 1px solid #30363d;
      padding: 10px;
      font-family: monospace;
    }

    button {
      cursor: pointer;
    }

    button:disabled {
      opacity: 0.5;
      cursor: not-allowed;
    }

    .section {
      margin-top: 30px;
      padding-top: 20px;
      border-top: 1px solid #30363d;
    }

    .output {
      margin-top: 15px;
      white-space: pre-wrap;
      background: #161b22;
      padding: 15px;
      border: 1px solid #30363d;
    }

    .error {
      color: #ff7b72;
    }

    .success {
      color: #3fb950;
    }
  </style>
</head>
<body>

<h1>github email getter</h1>
<p>minimal · dark · public github osint</p>


<div class="section">
  <h2>username → email</h2>

  <form id="forwardForm">
    <input id="usernameInput" placeholder="github username or profile url" />
    <button type="submit">search</button>
  </form>

  <div id="forwardOutput" class="output">waiting…</div>
</div>


<div class="section">
  <h2>email → accounts</h2>

  <form id="reverseForm">
    <input id="emailInput" placeholder="email address" />
    <button type="submit">search</button>
  </form>

  <div id="reverseOutput" class="output">waiting…</div>
</div>

<script>


const GITHUB_API = "https://api.github.com";
const RESULTS_PER_PAGE = 100;

function isEmail(value) {
  return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(value);
}


function isNoReply(email) {
  return email.endsWith("@users.noreply.github.com");
}

function extractUsername(input) {
  if (input.includes("github.com")) {
    return input.split("github.com/")[1].split("/")[0];
  }
  return input;
}


function setOutput(el, text, type = "") {
  el.className = "output " + type;
  el.textContent = text;
}


document.getElementById("forwardForm").addEventListener("submit", async e => {
  e.preventDefault();

  const output = document.getElementById("forwardOutput");
  const rawInput = document.getElementById("usernameInput").value.trim();

  if (!rawInput) {
    return setOutput(output, "missing username", "error");
  }

  const username = extractUsername(rawInput);
  setOutput(output, "searching…");

  try {
    /* ---- Fetch user profile ---- */
    const userRes = await fetch(`${GITHUB_API}/users/${username}`);
    if (!userRes.ok) throw userRes;

    const user = await userRes.json();

    if (user.email && isEmail(user.email) && !isNoReply(user.email)) {
      return setOutput(
        output,
        `email found (profile):\n${user.email}`,
        "success"
      );
    }

    const repoRes = await fetch(
      `${GITHUB_API}/users/${username}/repos?per_page=${RESULTS_PER_PAGE}`
    );

    if (!repoRes.ok) throw repoRes;

    const repos = await repoRes.json();

    for (const repo of repos) {
      const commitsUrl = repo.commits_url.replace("{/sha}", "") + "?per_page=10";
      const commitsRes = await fetch(commitsUrl);
      if (!commitsRes.ok) continue;

      const commits = await commitsRes.json();

      for (const c of commits) {
        const email = c.commit?.author?.email;
        const author = c.author?.login;

        if (
          author?.toLowerCase() === username.toLowerCase() &&
          isEmail(email) &&
          !isNoReply(email)
        ) {
          return setOutput(
            output,
            `email found (commit):\n${email}\nrepo: ${repo.name}`,
            "success"
          );
        }
      }
    }

    setOutput(output, "no public email found", "error");

  } catch (err) {
    if (err.status === 404) {
      setOutput(output, "user not found", "error");
    } else if (err.status === 403) {
      setOutput(output, "github rate limit exceeded", "error");
    } else {
      setOutput(output, "unexpected error", "error");
    }
  }
});


document.getElementById("reverseForm").addEventListener("submit", async e => {
  e.preventDefault();

  const output = document.getElementById("reverseOutput");
  const email = document.getElementById("emailInput").value.trim().toLowerCase();

  if (!isEmail(email)) {
    return setOutput(output, "invalid email", "error");
  }

  if (isNoReply(email)) {
    return setOutput(output, "noreply emails cannot be traced", "error");
  }

  setOutput(output, "searching…");

  try {
    const res = await fetch(
      `${GITHUB_API}/search/commits?q=author-email:${encodeURIComponent(email)}`
    );

    if (!res.ok) throw res;

    const data = await res.json();
    const users = new Set();

    data.items?.forEach(item => {
      if (item.author?.login) {
        users.add(item.author.login);
      }
    });

    if (users.size === 0) {
      return setOutput(output, "no accounts found", "error");
    }

    setOutput(
      output,
      `accounts found:\n\n${[...users].join("\n")}`,
      "success"
    );

  } catch (err) {
    if (err.status === 403) {
      setOutput(output, "github rate limit exceeded", "error");
    } else {
      setOutput(output, "unexpected error", "error");
    }
  }
});
</script>

</body>
</html>