%s may refer to:

C string

  • <code>%s</code>, in printf format string
  • <code>%s</code>, in scanf format string

System time

  • <code>%s</code>, seconds in the strftime format string
  • <code>%s</code>, used to check the Unix timestamp

Web browsers and websites

  • %s as a smart bookmark marker showing where to insert an argument string
  • %s in a quick searchbox is used for customisation for web browsers such as Opera, Chromium and Firefox, After the URL of the (empty) target site searchbox add %s so that the term in the browser searchbox is transferred into the site searchbox