In the next version of Android will appear the ability to quickly edit screenshots — native editor appeared in the first Developer Preview for the Pixel, the Pixel XL, Pixel 2, Pixel 2 XL.
A screenshot of the blinds from the Android Developer Preview P
The app is called Google Markup and craftsmen it has been ported.
To access it you need to make a screenshot and click the Share button at the curtain, then choose Markup. Editor. Interestingly, you can edit not only screenshots, but also any other photos.
Download apk-file on the forum XDA-developers. Supported Android versions 4.0 and above.