The CSS reference

"speech-rate" - css property (v. css 2)

  • To specify the speed of the speaking
  • Initial value: medium
  • The property is inherited
  • HTML usage: all elements
  • Browsers that support the speech-rate - property :
    Internet Explorer Mozilla Firefox Opera Google Chrome Apple Safari
Typical usage:
h1 { speech-rate: slow }

Possible speech-rate values:

Values Comments CSS
[number] Specifies the speaking rate in words per minute, a quantity that varies somewhat by language but is nevertheless widely supported by speech synthesizers. 2
x-slow Same as 80 words per minute. 2
slow Same as 120 words per minute. 2
medium Same as 180 - 200 words per minute. 2
fast Same as 300 words per minute. 2
x-fast Same as 500 words per minute. 2
faster Adds 40 words per minute to the current speech rate. 2
slower Subtracts 40 words per minutes from the current speech rate. 2
inherit Will inherit the value from parent specification. 2
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