
How to add a background to a screenshot on a Mac
Step by step: capture a screenshot on your Mac, put it on a background with padding, rounded corners and a shadow, and copy the PNG. Works offline.

How to make screenshots look clean in GitHub pull requests
Capture a region, give it even margins and a quiet background, keep text sharp at Auto size, and paste it into a GitHub pull request.
Guides
Short how-tos.
Step-by-step guides for styling screenshots on a Mac, with real TinkerShot screenshots.