title: What are the current cookie limits in modern browsers?
body: <p>What are the generic cookie limits for modern browsers, as of 2011? I'm particularly interested in:</p>
  
  <ul>
  <li>Max size of a single cookie</li>
  <li>Max number of cookies per host/domain name + path</li>
  <li>Max number of cookies per host/domain name</li>
  <li>Max number / max total size of all cookies in a given browser</li>
  </ul>
  
  <p>I'm aware of <a href="http://www.ietf.org/rfc/rfc2109.txt" rel="noreferrer">RFC 2109</a> that specifies:</p>
  
  <ul>
  <li>at least 300 cookies</li>
  <li>at least 4096 bytes per cookie (as measured by the size of the characters that comprise the cookie non-terminal in the syntax description of the Set-Cookie header)</li>
  <li>at least 20 cookies per unique host or domain name</li>
  </ul>
  
  <p>but what are real-world specs?</p>