Screenshot Cropper & Annotator - Online Markup Tool

Click the Upload button to select an image from your device, or use the Paste button to paste an image directly from your clipboard (e.g., after taking a screenshot). You can also simply press Ctrl+V while the tool is focused.

Select the Crop tool from the toolbar. Click and drag on the image to define a cropping rectangle. Once selected, you can adjust it by dragging the edges or moving the entire box. Click the green checkmark () to apply the crop, or the red cross to cancel. After cropping, the canvas will resize to the cropped area, and you can continue annotating.

You have four annotation tools: Pen (freehand drawing), Rectangle, Arrow, and Text. After selecting a tool, adjust color and line size using the controls. Click and drag to draw shapes; for text, click where you want to place it and type in the prompt.

Yes, the tool supports multiple undo steps (up to 20). Click the Undo button () to revert the last annotation or crop action. This allows you to experiment freely.

Simply click the Download button (). The image will be saved as a PNG file containing all annotations and any applied cropping. No data is ever sent to a server – all processing is done locally in your browser.

Absolutely. This tool runs entirely on your device. Images are loaded into the browser canvas and never uploaded anywhere. You can confidently work with sensitive screenshots or documents.

Common formats like PNG, JPEG, GIF, BMP, and WebP can be uploaded. The final download always produces a high-quality PNG for best clarity.