Marks become an ordered issue list
Every annotation is a numbered item. Redline generates the list from what you drew and pairs it with the image, so a coding agent, or a colleague, gets an unambiguous, ordered brief.
Redline ยท In developmentPoint at the screen.
Point at the screen.
Skip the prompt.
A macOS capture and annotation tool where the annotations are the brief. Mark up a screenshot with arrows, numbered steps, and redactions, then hand a coding agent the image and a generated, ordered issue list.
Why it's different
A screenshot that explains itself.
Most capture tools stop at a nice image. Redline treats the markup as the instructions, so the picture you send is already the brief.
- The annotations are the briefCapture a screen, mark it up, and the marks become the instructions. Pointing at exactly what you mean replaces writing a long paragraph describing it.
- Built to hand off to a coding agentRedline turns your arrows, boxes, and notes into a generated, ordered issue list, then hands over the marked image and that list together. The agent gets a brief, not a vague ask.
- Real annotation, not a scribble layerBendable arrows, numbered steps, comments, redactions, and measurements. The tools you need to say precisely what should change and where.
- Lives in the menu barCommand Shift 4 to capture, a shelf to stash what you grabbed, and Command Shift V to paste it back. It is there when you need it and invisible when you do not.
Features
What it actually does.
Capture, annotate, redact, and hand off. Each piece is aimed at the same goal: turning a screen into an instruction someone, or something, can act on.
Redact before it leaves your screen
Black out tokens, names, and anything else that should not travel with the screenshot. The redaction is baked into the image, not a layer someone can peel back.
Bendable arrows
Curve an arrow around the UI so it points at the thing, not through it.
Numbered steps
Drop numbered markers that stay in order as the brief and the list.
Measurements
Pixel distances and sizes, right on the capture, for spacing and redlines.
The shelf
Captures wait on a shelf until you need them, then paste straight back out.
From Command Shift 4 to done
A fast region capture, an annotation canvas that opens where your eyes already are, and a paste-ready result a keystroke later. Redline is a menu-bar app for macOS 14 and later, built native so capture and markup keep pace with you.
Ship briefs, not paragraphs.
Redline is in active development. If pointing at the screen beats describing it for your workflow, come try it early.