Shottr is a small, fast screenshot app for Mac aimed at designers, front-end engineers and anyone who cares about pixels. Beyond capturing, it helps you measure, annotate and inspect what's on screen.

Key features:

Capture scrolling screenshots of long web pages or chats in any app.
Annotate with text, arrows, freehand drawing, highlights, spotlights and a magnifier.
Pixelate or remove sensitive information from a screenshot.
Recognize text with OCR and read QR codes, copying the result to the clipboard.
Measure sizes and distances with the arrow keys, and copy the color under the cursor with Tab.
Pin screenshots as floating, always-on-top windows.
Add gradient backgrounds, shadows and rounded corners, or upload to any S3-compatible storage.

Shottr is a native app optimized for Apple silicon and runs on macOS 10.15 Catalina and later. You can use it for free with most features available, and it will occasionally ask you to buy a license.