Editing Browser engine (section)

===Development timelines===
<small>This figure shows for various browser engines the duration of its active [[software development|development]], the period when relevant new [[web standards]] continue to be added to it.</small>

<timeline>
# header
ImageSize = width:750 height:170
PlotArea  = left:80 right:5 bottom:20 top:5
AlignBars = justify
DateFormat = dd/mm/yyyy
Period     = from:01/01/1997  till:31/05/2022
TimeAxis   = orientation:horizontal   format:yyyy

Colors =
  id:microsoft     value:rgb(0.3, 0.5, 1)
  id:gecko       value:rgb(1, 0, 0)
  id:khtml       value:rgb(0.3,0.3,0.3)
  id:webkit      value:rgb(0.3, 0.36, 0.36)
  id:blink       value:rgb(0.3, 0.39, 0.39)
  id:mgray       value:rgb(0.5, 0.5, 0.5)
  id:lgray       value:rgb(0.75, 0.75, 0.75)

ScaleMajor = gridcolor:mgray unit:year  increment:1   start:01/01/1997
ScaleMinor = unit:month increment:3   start:01/01/1997
BackgroundColors = bars:lgray

BarData =
  bar:Gecko           text:Gecko
  bar:Trident          text:Trident
  bar:EdgeHTML        text:EdgeHTML
  bar:KHTML           text:KHTML
  bar:WebKit          text:WebKit
  bar:Blink           text:Blink

PlotData=
  align:center textcolor:black fontsize:8 mark:(line,black) width:15 shift:(0,-4)

  bar:Gecko
  from: 01/05/1997  till: 31/05/2022    color:gecko mark:(line,white)

  bar:Trident
  from: 01/10/1997  till: 15/07/2015    color:microsoft mark:(line,white)

  bar:EdgeHTML
  from: 12/11/2014  till: 15/12/2018    color:microsoft mark:(line,white)

  bar:KHTML
  from: 04/11/1998  till: 15/10/2016    color:khtml mark:(line,white)

  bar:WebKit
  from: 25/06/2001  till: 31/05/2022    color:webkit mark:(line,white)

  bar:Blink
  from: 03/04/2013  till: 31/05/2022    color:blink mark:(line,white)

</timeline>