image · free tool
Screenshot annotation tool
Add numbered markers, arrows, shapes, highlights, and text manually. Nothing is generated or uploaded.
Private by default Immediate preview No signup for local exports
Drop a screenshot into Screen edit
Paste from your clipboard or upload an image. Crop, annotations, redaction, and export stay local.
Processed locally in this browser
How this tool works
A useful result, with clear limits
Adds manually placed numbered markers, arrows, shapes, highlights, and text to a screenshot for a clear visual explanation.
How to use it
- Paste or upload the screenshot.
- Choose an annotation tool and place it on the canvas.
- Export the annotated image as PNG or WebP.
Inputs and output
- Inputs
- One local screenshot and the annotation geometry, colors, and labels you choose.
- Output
- A flattened screenshot with annotations rendered into the exported image.
Privacy
Annotations and image export run locally. No AI-generated labels or uploads are involved.
Related tools
Straightforward by design
What to expect
One focused workflow, clear constraints, and no hidden result gate.
Does Screenshot annotation tool upload my input?
The utility processes your input in this browser. ArcDemo only receives content when you explicitly choose a hosted save or product creation flow.