Image Annotator
An annotation tool for drawing arrows, boxes, numbers, and highlights on screenshots, then saving them
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
An annotation tool that lets you draw arrows, boxes, numbered badges, and highlighter marks directly onto screenshots or photos to add explanations. Whether you're giving work feedback, capturing a manual, or filing a bug report, it's perfect for anyone who needs to point out 'look here' — right in the browser, with no extra software.
How to use
- Drag and drop or click to load the screenshot/image you want to annotate.
- Pick a tool — arrow, box, highlighter, or number — and set the color and thickness.
- Drag across the image to draw a shape; with the number tool, each click drops a ①②③ badge where you tap.
- Use 'Undo' to remove your last annotation, or click 'Download PNG' to save when you're done.
FAQ
- Are my files or inputs sent to a server?
- No. Loading images, drawing annotations, and saving all happen entirely inside your browser. No image is ever uploaded to or stored on a server.
- How are the number badges assigned?
- After selecting the 'Number' tool, each click on the image drops a circular badge that automatically increments 1, 2, 3… in order. It's handy for explaining steps in sequence.
- Can I erase annotations I've drawn?
- Yes. Use the 'Undo' button to cancel your most recent annotations one at a time, or 'Clear all' to remove every annotation at once. The original image stays untouched.