4 ms·

Instead of serving all fonts to all browsers, which would be slow, you can serve different styles based on the user-agent.

• steveax 13y ago
  User agent sniffing is unreliable and evil.
  • bigiain 13y ago
    While you're right - in this case it might be perfectly acceptable to decide "I'll use unreliable user-agent sniffing to handle 80%/90%/99%/99.999% of my traffic, and accept some small cases where a slower option occasionally needs to be used, or possibly accept minor font differences on odd-ball browsers".
  • coldtea 13y ago
    Old wives tale. Not to mention there are more ways to tell apart browsers than user agent sniffing.