A clearer way to show it
Annotate screenshots
on your Mac.
An arrow for the detail. A highlight for the sentence. A note for what comes next. SnapApp brings them together in a native screenshot editor.
macOS 14 Sonoma or later · Apple silicon & Intel · Currently free · No account
A little context changes everything.
Make the next step obvious.
A screenshot shows the page.
A thoughtful annotation shows the point.
One note. Right where it helps.
Choose the mark that makes the point.
Point to the exact detail
Draw an arrow or frame an area with a shape. Hold Shift to snap an arrow to a straight or diagonal direction.
For bug reports and design feedback
Give the image a voice
Add a short text note or numbered steps. Keep the explanation next to the part of the screenshot it describes.
For instructions and support replies
Highlight what matters
Use Smart text highlights on recognized words, a freehand Marker, or an Area highlight. Highlighting keeps the content visible.
For a sentence worth noticing
The note doesn’t have to cover the screenshot.
Draw beyond an edge and the canvas grows. Use that extra space for a label or an arrow while leaving the original detail visible.
Switch between clean Formal marks and hand-drawn Doodle styling. Move and resize annotations in the editor, and undo a change when the first attempt needs another pass.
From capture to a useful explanation.
- 01 / CAPTURE
Start with the right area.
With SnapApp running, press its default shortcut and drag a region. The screen freezes before selection, preserving the moment you want to explain. You can change the shortcut in Settings.
- 02 / ANNOTATE
Add just enough context.
Choose an arrow, shape, text note, highlight or numbered step. Keep one main point per image. For sensitive content, use opaque Redact blocks rather than a translucent highlight. When to blur and when to redact. Framing exactly the right region with a shape is also the core skill of image annotation, paid remote work that teaches AI models to detect objects, and AITraining.jobs' guide to data labeling, from the makers of this site, shows how to start.
- 03 / SHARE
Copy it into the conversation.
Captures and edits save locally as PNG files. Copy the image to paste into a message, issue or document, or open the saved file in Finder. Check the final image before sending.
Before your next screenshot.
Can I annotate a screenshot on Mac without another app?
Yes. Take a screenshot with the built-in macOS shortcut, then click the floating thumbnail to open its editing controls. Markup provides tools for text, shapes and drawing. You can also open an image in Preview and use Markup.
Can I put a note outside the screenshot?
Yes. In SnapApp, drawing past an image edge expands the canvas with a neutral background. Your original screenshot stays intact, and the added area gives arrows and notes their own space.
Does highlighting hide private information?
No. Highlighting is designed to leave content readable. Use the Redact tool when you need an opaque cover over words or an area, then inspect the exported PNG before sharing it.
Are my screenshots uploaded?
SnapApp captures, annotates and recognizes screenshot text locally on your Mac. It does not automatically upload your screenshots. You choose where to paste or share the exported image.
What do I need to use the app?
The current release runs on macOS 14 Sonoma or later, on Apple silicon and Intel Macs. The download is currently free and requires no account. Grant Screen Recording permission to capture your screen.
