Take Instant Screenshots, Annotate And Edit In Google Chrome [Extension]

When you click the extension’s icon in your browser’s navigation bar, you get the option to either capture the visible area of the screen, capture a selected area or grab the whole page. Selecting one of these options will take you to the edit mode, where you can modify your image to your liking.
Once you editing is done, then hit the ‘Done’ button. You can either download the image to your local machine, or upload it to get a shareable link for others. You can also revisit the image to do some more editing if you feel something was left amiss. Screenshots can be saved in lossless PNG format and supports shortcuts (can be changed from extension options).

