Free Online Screenshot Annotator

Scribbble's free screenshot annotator lets you mark up images directly in your browser. Paste from your clipboard or upload a screenshot, then draw with the freehand pen, add arrows, rectangles, text labels, numbered step markers, or blur out sensitive information. When you're done, copy the annotated screenshot back to your clipboard with a single keyboard shortcut. No signup, no upload to a server, no watermark.

Tools included

• Freehand pen for drawing and highlighting
• Arrow tool to point at things
• Rectangle tool for outlining UI elements
• Text tool to add labels and captions
• Blur / pixelate tool to redact sensitive areas
• Numbered step markers (1, 2, 3…) for tutorials
• Backgrounds — solid, gradient, and image
• Depth of field for cinematic focus

Frequently asked questions

How do I annotate a screenshot online for free?

Paste a screenshot from your clipboard or upload an image, then use the floating toolbar to draw, add arrows, rectangles, text, numbered steps, or blur sensitive areas. Press the copy shortcut to copy the result back to your clipboard.

Is my screenshot uploaded to a server?

No. Everything happens in your browser — your screenshot never leaves your device.

Can I blur or pixelate sensitive information?

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.

Want to annotate live on your Mac screen instead?

Try the Scribbble Mac app — draw and annotate over anything on your screen in real time.