Draw boxes, arrows, circles, numbered steps and notes on a screenshot or photo. Undo anything, keep the picture underneath untouched, and download the marked-up copy.
Gives you a small set of marking tools that draw on a layer above the picture: rectangles and ellipses (optionally tinted), arrows and straight lines, a pen and a translucent marker for freehand, numbered step badges and short text labels. Because the marks live on their own layer, the eraser removes only what you drew and never rubs out the photo. Line width and text size are percentages of the picture’s shorter side, so the same settings look right on a phone screenshot and a 4K capture. Undo and redo cover every action.
A 2560 × 1440 screenshot of a settings screen for a bug report: a red box around the wrong toggle (line width 1.2 %, about 17 px), an arrow from the box to the empty space on the right, and a text label “should be on by default” at 3 %. Then three numbered badges on the steps to reproduce. Downloaded as PNG the file is around 600 KB and nothing in the interface is blurred by compression. For a photo of a rental car, a yellow marker stroke over the scratch and a circle around the dent, saved as JPEG.
Use it for bug reports, tutorials, feedback on a design, marking damage on a photo, pointing out a person in a crowd or explaining a screenshot to someone. If you need to hide something rather than point at it, Censor Photo pixelates or blacks out a region. For a caption or a title in a chosen font, Add Text has more typography. Cropping the screenshot first with Crop Image makes the marks bigger and the file smaller.
Box and Ellipse drag from corner to corner; turn on Fill for a light tint inside. Arrow drags from the tail to the tip and gets a head sized to the line. Number drops a badge that counts up on each click. Text places whatever is in the text field where you click; Marker is a wide, see-through highlighter. Line width and Text size are relative to the picture, and the eight swatches cover the colours that read best on screenshots.
Can I move a mark after drawing it? Not yet. Undo it with Ctrl+Z and draw it again; the tool and colour stay selected so it takes a second.
Does the eraser damage the photo? No. Marks are drawn on a separate layer and the eraser only clears that layer. The original pixels are always kept.
Which format should I download? PNG for screenshots and anything with text, because JPEG blurs sharp edges. JPEG or WebP for photos, where the smaller file matters more.
Is the screenshot uploaded? No. Everything, including the drawing and the export, runs in your browser.