Most of the crappy screenshot services are expensive or filled with spammy ads because the bandwidth and processing power to serve the screenshots is not cheap. Wont the same thing happen with your service too if it becomes popular? TANSTAAFL

With the rise of responsive websites, you may want to accept viewport parameters or at least identify which viewport you're screenshotting at.

That's interesting, I will add it to my features list.

Why when I write a link to try out Shotsrv an image appears that says "No images, deal with it!" ???

oh wow, i guess i forgot to remove my dev images from testing :) i apologize for that.