Pixlr Grabber
Grabber 0.5 for Chrome
The Chrome extension lets you capture the whole or parts of the browser content (Print screen), edit, share or save direct in the browser.
Grabber 2.0.3 for Firefox
Grabber for Firefox let you right click on any image in a webpage and load it into pixlr for editing. The firefox add-on also lets you capture the whole or parts of the browser content (Print screen)