I've been coding for a while and it's just struck me, what's better to use in terms of SEO:



  • Valid question, but people who worry about this level of minutia should have the rest of their site absolutely perfect. Jun 7, 2011 at 22:17

2 Answers 2


According to Matt Cutts are treated exactly the same. FYI, <i> and <em> are also treated the same.

Video where Matt Cutts says they have the same weight

  • I would never think to even question this! Too busy trying to write good quality content to go in between the tags.... Jun 7, 2011 at 15:51
  • Sweet source for the answer, direct from the horse's mouth.
    – Kzqai
    Jun 7, 2011 at 19:16
  • @Tchalvak - that's always the best way with SEO. Unfortunately we don't get too many chances to do that.
    – John Conde
    Jun 7, 2011 at 19:22

John is right, but <b> denotes the way it should look like instead of the meaning like <strong>. The same with <i>, you are saying that text should be in italics but, with <em> you are making emphasis on that text.

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