File size comparison?

[Porco-Rosso]

It might be useful to calculate some file size comparisons, or perhaps any uses of this.

I can already see it as a great tool to fight "saving" images on fickr etc. (better then an ugly watermark)

[e00dan]

For me image was originally ~30kb and resulting code was 4 462 430b which is 4.46243 megabytes.