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Comment by schappim | Hacker News Reader

If you want a DIY version of this, try ImageMagick's compare command:

compare bag_frame1.gif bag_frame2.gif compare.gif

Documentation: http://www.imagemagick.org/Usage/compare/

Interesting. And to render the html you can use cutycapt. Which is in the Debian repos too. I just tried it, and this rendered a nice diff of two pages for me:

  cutycapt --url=http://www.xyz.com/1 --out=1.png
  cutycapt --url=http://www.xyz.com/2 --out=2.png
  compare 1.png 2.png diff.png

This is why I love HN. Someone launches a web service with a flashy site, lots of marketing blurb and monthly plans from $10 to $200. And in the HN comments thread, two random people reimplement the functionality in three lines.

Now make it a webservice and charge $200/month!

> Now make it a webservice and charge $200/month!

I don't actually see the problem here. They provide a real service, so they can demand real money. There are multi billion dollar companies that do less for their users.

First part already done:

http://archive.is/

apt-get install the services and use them on my server ;-)

Very interesting approach.

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