How to Use the Pen Tool in Illustrator (P)

Pressing P activates the Pen tool, Illustrator's precision drawing tool for building custom vector paths anchor point by anchor point, the foundation of essentially all professional icon, logo, and illustration work in the application. **The two click types**: a plain click places a corner anchor point with no curve handles, producing a sharp angle to the next point. A click-and-drag instead places a smooth anchor point and simultaneously drags out symmetric curve handles, letting you shape a flowing curve as you drag before releasing. Mixing both click types within the same path is normal and expected — most real shapes combine sharp corners and smooth curves. **Closing a path**: hovering the Pen tool back over the very first anchor point you placed shows a small circle next to the cursor, indicating that clicking will close the path into a continuous loop rather than leaving it open. Closing a path is necessary for it to be properly filled with a solid color rather than just showing a stroke outline. **Adjusting handles after placing a point**: holding Alt (Option on Mac) immediately after placing a smooth point lets you independently reposition just one of its two curve handles rather than both moving symmetrically together, useful for creating an asymmetric curve transition at that point. **Editing after the fact**: once a path exists, switching to the Direct Selection tool (A) lets you click individual points to reposition them or drag their curve handles to reshape the curve, without needing to redraw from scratch. Hovering the Pen tool itself over an existing path (rather than starting a new one) shows contextual plus/minus cursors for adding or removing points directly. **A common beginner mistake**: starting a new path by clicking near, but not exactly on, an existing path's endpoint creates a brand new disconnected path rather than continuing the existing one. Illustrator shows a small slash next to the cursor when you're positioned to continue an existing open path correctly — watching for that visual cue avoids accidentally fragmenting a shape into multiple separate paths. **Related shortcuts**: A (Direct Selection) for adjusting points after placement, Shift+C for converting a point's smooth/corner type, and Ctrl+J (Cmd+J) for joining two separate open path endpoints together. **Constraining angles while placing points**: holding Shift while clicking or dragging constrains the new point or curve handle to 45-degree increments relative to the previous point, useful for drawing perfectly horizontal, vertical, or diagonal segments without needing pixel-perfect mouse precision. **Rubber-banding preview**: Illustrator shows a live preview line from the last placed point to your current cursor position before you click, letting you see exactly where the next segment will land before committing to it, which is especially useful when working at a zoomed-in level where small cursor movements have an outsized visual effect on the resulting curve. **Switching between corner and smooth points mid-path**: rather than finishing a path and going back to convert points afterward, holding Alt/Option while clicking to place a new point creates a corner point with only one active handle even if you're otherwise building a smooth curved path, letting you mix sharp corners and smooth curves within the same continuous drawing action rather than needing a separate conversion step afterward.