Tools:
      <br /> <a href="/ip">ip</a>
      <br /> <a href="/qr">QR-code</a> <code>echo hello,world|curl -T- https://t.est.im/qr</code> <br />
      <br /> <a href="/speculate">speculationrules demo</a>
      <br /> <a href="/paste">paste (富文本粘贴)</a>
      <br /> <a href="/visitors/">visitor counter</a>