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anthum-sparkline

This app generates a PNG sprite with sparkline graphs. In certain situations, a server-side sprite will outperform browser-generated sparklines that use SVG or canvas.

Examples using random data are below, and you would implement your own sparklines by interfacing with SparklineGenerator.createPNG() and passing your data and options to it.

Total Sparklines*

https://demo.anthum.com/sparkline.png?bg=cccccc&total=10
https://demo.anthum.com/sparkline.png?bg=cccccc&total=11
https://demo.anthum.com/sparkline.png?bg=cccccc&total=100

* Background color specified because it's transparent otherwise (barely visible in latest Chrome)

Line Color

https://demo.anthum.com/sparkline.png?color=aa0000

Background Color

https://demo.anthum.com/sparkline.png?color=333333&bg=eaeaea

Fill Color

Fill is experimental and is not pixel perfect. You'll see overflows over boundaries, but feel free to play with it

https://demo.anthum.com/sparkline.png?color=333333&bg=eaeaea&fill=aaaaaa
https://demo.anthum.com/sparkline.png?color=ff0000&bg=000000&fill=666666

Predictible Randomness

Add id parameter to use consistent/predictible randomness when testing color options.

https://demo.anthum.com/sparkline.png?id=1&color=333333
https://demo.anthum.com/sparkline.png?id=1&color=aaaaaa