<p>
QR codes in the Google Chart API is just another type of chart.  It uses the same root URL as the other charts. 
</p>
<p>
The table below shows the required request parameters to the Chart API for QR codes.  This is taken directly from Google Chart documentation.  See the <a href="http://code.google.com/apis/chart/infographics/docs/qr_codes.html" target="_blank" class="news_link" title="Google Chart"><b> Google Chart site</b></a>  to see the full request parameters.
</p>

<br/>

<table cellpadding="10" cellspacing="5" rules="all" style="font-size:1rem;">

<tr style="font-weight:bold;">

<td>
Parameter
</td>

<td>
Required or optional
</td>
<td>
Description
</td>
</tr>


<tr>
<td>
<b>cht=qr</b>
</td>
<td>
Required
</td>
<td>
Chart type, specifies a QR code.
</td>
</tr>

<tr>
<td>
<b>chs=&lt;width>x&lt;height></b>
</td>
<td>
Required
</td>
<td>
Image size
</td>
</tr>

<tr>
<td>
<b>chl=&lt;data></b>
</td>
<td>
Required
</td>
<td>
The data to encode. Data can be digits (0-9), alphanumeric characters, binary bytes of data, or Kanji. You cannot mix data types within a QR code. The 

data must be UTF-8 URL-encoded. Note that URLs have a 2K maximum length, so if you want to encode more than 2K bytes (minus the other URL characters), 

you will have to send your data using POST.
</td>
</tr>

</table>
<br/>

<p>
Here is the root URL for Google Chart API.
</p>

<h3>
https://chart.googleapis.com/chart?
</h3>


<h3>
The Code
</h3>

<p>
Suppose you want to create a QR code with a size of 200x200 pixels and data is <b><i>https://kahimyang.com</i></b>.  The URL for your QR graphic should look like below:
</p>

<p>
<pre class="brush:  plain">
https://chart.googleapis.com/chart?cht=qr&
chs=200x200&chl=https://kahimyang.com
</pre>
</p>

<p>
<img loading="lazy" src="https://chart.googleapis.com/chart?cht=qr&chs=200x200&chl=https://kahimyang.com" />
</p>

<h3>
Test your QR code
</h3>

<p>
There is a Google project called Zebra Crossing or zxing.  It includes a ready to use barcode scanner for Android.  If you have an Android you may want to <a href="http://code.google.com/p/zxing/downloads/list" target="_blank" class="news_link" title="zxing download"><b>download this scanner </b></a> and install it into your device.  
</p>
<p>
Just point the camera of your phone to the QR code to scan.
</p>


<p>
That's it.  Good luck.  
</p>




Generate your own QR code