Screenshot Annotator
Privacy First: Your files are processed securely. Whenever possible, processing happens in your browser and files are never stored on our servers.
Upload any image and annotate it entirely in the browser - images never leave your device. 9 tools: Arrow (filled arrowhead), Rectangle, Circle/Ellipse, Line, Freehand Pen, Text (click to place), Step Numbers (auto-incrementing circles), Highlight (semi-transparent overlay), Blur/Censor (pixelate regions). 9 preset colors plus custom color picker. Adjustable stroke width (1–12px) and font size (12–64px). Undo removes last annotation; Clear all resets. Download as PNG at full canvas resolution. Works offline after page load.
How to Use
- 1Upload a screenshot or image by clicking the upload area or dragging it in
- 2Select a tool from the toolbar (Arrow, Rectangle, Circle, Text, Step, Blur, etc.)
- 3Pick a color from the color swatches and set stroke width
- 4Click and drag on the canvas to draw shapes; click for text/step placement
- 5Use Undo to remove the last annotation or Clear All to start fresh
- 6Click Download to save the annotated image as PNG
Features
- 9 annotation tools: Arrow, Rectangle, Circle, Line, Freehand, Text, Step Numbers, Highlight, Blur/Censor
- 9 preset colors plus full custom color picker
- Adjustable stroke width 1–12px and font size 12–64px
- Auto-incrementing step numbers (click to place, reset button)
- Pixelate/blur tool to censor sensitive regions
- Undo (removes last annotation) and Clear All
- Download annotated image as PNG at canvas resolution
- Supports PNG, JPG, WebP, GIF image uploads
- Drag-and-drop or click-to-upload interface
- 100% client-side - images never leave your device
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