Your opinion is so important for me! Do you dream of another fancy feature which would spice up your work routine? Even if you have found a bug, don't hesitate to drop me a line. I will do my best to implement your feedback and improve this tool.

I am able to read/answer in German/English.


That's me

Christoph Erdmann
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Hi! I’m Christoph, working as a programmer/developer in Bielefeld/Germany.

Since I was building an advertising tool, I had to learn a lot about image file formats and compression.

This tool is some kind of a by-product and turned out to be my sweet little baby. So have fun using it! I hope it will help you as much as it does for me.

Many thanks to the MINISTRY Group for hosting COD.


Smashing Magazine
Smashing Magazine
 Freiburg, Germany

A closer look at how to load different preview images from progressive JPEGs with the help of Ajax and HTTP range requests. Also, @McSodbrenner introduces the Embedded Image Preview (EIP) technique ​↬ Faster Image Loading With Embedded Image Previews…

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