Tool
Upload a screenshot, draw boxes, arrows, and text. Perfect for bug reports and tutorials.
Drop a screenshot here, or click to select a file
QA needs to circle the bug on the screenshot. The PM needs to mark which UI element should change. Tutorial writers need arrows pointing at "click this button." All of these require quick markup on a screenshot — not worth opening Photoshop for. Upload your image, draw a few shapes, and download the annotated version.
Engineers dread getting an unmarked full-screen screenshot with "it's broken" as the only context. A good bug report screenshot has: a red box around the problem area, an arrow pointing at the specific element, and a short text note explaining expected vs actual behavior. The engineer sees the issue instantly without playing 20 questions. The 30 seconds you spend annotating saves way more time than the back-and-forth of "which part do you mean?"
QA testers marking bug locations during test runs. Customer support annotating user-submitted screenshots before forwarding to the dev team. Technical writers using arrows and text labels to guide readers step by step. Designers reviewing UI — circling spacing issues, color mismatches, alignment problems right on the screenshot. Presenters highlighting key areas on screenshots so the audience knows exactly where to look.
This tool uses HTML5 Canvas to process images directly in your browser. All annotation work happens on your machine — screenshots are never uploaded to any server, and the annotated output downloads straight from the browser. So even if your screenshots contain internal dashboards, customer data, or proprietary system interfaces, there's zero risk of exposure.