Scribbble's free Mac screenshot annotation tool lets you mark up images directly in your browser — no install, no signup, no upload to a server. Beyond the standard pen, arrow, text, rectangle, blur and numbered-step tools, it includes two effects almost no other free screenshot annotator offers: 3D tilt (rotate the screenshot in 3D space with arrow keys, perfect for hero images and social posts) and depth of field (a cinematic focus-blur effect that highlights one part of the image while softly blurring the rest).
macOS Preview includes basic Markup, but it's missing everything that actually makes a screenshot look great when you share it: numbered step markers for walkthroughs, a real blur tool for redacting credentials, gradient and image backgrounds, depth of field for focusing on one UI element, and 3D tilt for hero shots. Most free screenshot annotators online don't have tilt or depth-of-field either — this one does, in your browser, with nothing to install.
Take a screenshot on Mac with Cmd+Shift+4, paste it into this tool with Cmd+V, then use the floating toolbar to draw, add arrows, rectangles, text, numbered steps, or blur sensitive areas. Press Cmd+C to copy the result back to your clipboard.
For free, in-browser annotation with no install, this Scribbble Screenshot Annotator covers pen, arrow, text, rectangle, blur, numbered markers and backgrounds — plus 3D tilt and depth of field, two effects most other free screenshot tools don't have. For drawing on the live Mac screen during presentations or recordings, install the Scribbble Mac app.
Yes — both. Switch on the Tilt tool and use the arrow keys to rotate the screenshot in 3D space, perfect for hero images and social-media posts. The Depth of Field tool blurs everything except a focused band of the image with adjustable intensity and focus position — a cinematic effect for highlighting one UI element. Most free screenshot annotators don't include either of these.
No. Everything happens in your browser — your screenshot never leaves your device.
Yes. Pick the Blur tool and drag a rectangle over any region you want to redact — useful for hiding emails, tokens, names, or other private data before sharing a Mac screenshot.
Yes. The Background tool lets you place your screenshot on a solid color, gradient or image background — useful for blog headers, social posts and product shots.
Try the Scribbble Mac app — a Mac-native screen annotation app that draws on top of any application on your screen in real time. Perfect for live Zoom presentations, OBS streams and recorded tutorials.