QR in Lay mans terms

[L]

Okay, I have read about what Google has to say about how to use the
chart api to create qr codes. I am a bit slow evidently so can someone
in very simple terms explain how to create QR codes easily. I would
like to create not only urls but also VCards. Thanks!

[duniyadnd]

To create a QRCode, create an image tag

<img src="">

Inside the src attribute start with this:

https://chart.googleapis.com/chart?cht=qr&chs=

Now figure out how big you want the image - let's try 150x150

https://chart.googleapis.com/chart?cht=qr&chs=150x150

Add an & after that to get the next piece of information

https://chart.googleapis.com/chart?cht=qr&chs=150x150&

and add "chl=" which will contain the information you need:

https://chart.googleapis.com/chart?cht=qr&chs=150x150&chl=

Enter in the information you want it to contain:

https://chart.googleapis.com/chart?cht=qr&chs=150x150&chl=Hello%20World

Don't forget to URLEncode your string before you put it after chl. You can do that at: http://meyerweb.com/eric/tools/dencoder/

For a vcard, refer to this: http://fisherwebdev.com/wordpress/2010/05/21/vcards-as-qr-codes-with-google-image-chart-api/