Can I use "pinch & zoom" in a web viewer ?

Yes you can, if you use the following tag in your code:

<meta name="viewport" content="width=320; initial-scale=1.0; maximum-scale=2.0; user-scalable=1;"/>

Where:

  • width is the width of your web viewer
  • initial-scale: the initial view size - usually this will be "1" for 100%
  • maximum-scale: maximum zoom level - "2" = 200%
  • user-scalable: 1 = yes