Google Chart Images Replacement

Question

The Google Chart Images API is currently deprecated and scheduled for retirement on 20th April 2015.

Is there any other free service that can replace it and allow generating chart images just by providing parameters in the URL?

Here's an example for a URL used to generate a PNG image, it can be used as an HTML img source and is useful especially in e-mails:

http://chart.apis.google.com/chart?chxl=1:|Apr+04|Apr+05|Apr+06|Apr+07|Apr+08|Apr+09&chxp=1,0,20,40,60,80,100&chxr=0,0,45&chxs=1,676767,11.5,0,lt,676767&chxt=y,x&chs=550x198&cht=ls&chco=3366CC,FF9900&chds=0,45,0,45&chd=t:7,12,11,9,13,7|11,26,45,24,22,27&chdl=Visits++++|Page+Views&chdlp=t&&chdls=333333,16&chg=100,20,0,0&chls=4|2

This will produce the following image that can be added easily via an <img> tag and is supported across all browser and email clients.

Answer 1

Following this announcement, we made a drop-in-replacement for Google Image Charts 👍 and added gif animation on top of it 🚀(chart animations in emails are awesome!!).

It's called Image-charts. No more server-side chart rendering pain, no scaling issues, it's blazing fast, 1 URL = 1 image chart.

... and QR Code as well:

https://image-charts.com/chart?
&chs=150x150
&cht=qr
&chl=Hello world
&choe=UTF-8