This extension captures your visible tab automaticaly when the tab has changed
This extension takes snapshots in a visible tab automatically if its url is contained in the option page.
And the captured images save to your local storage automatically.
(Caution!! Don't use this in sites which are reloaded in hight frequency)
In defaults, http://localhost is set.
This extension can be run in Chrome DevChannel or higher.
[Update]
[Privacy policy]
This extension collects an usage information by Google Analytics, but it never send a personal information, Web sites information and etc. to Google Analytics. And, a cookie will be used for tracking.