The draw tools are the PDF Editor's sketch layer: ink for freehand strokes, plus rectangle, ellipse and arrow for precise marks, all taking the shared markup color palette. Drawing sits between annotation and editing — you are marking the page, not changing its content — which makes it the right tool for sketching a diagram idea over a draft, circling the flaw in a layout, or gesturing emphasis during a review.
Draw freehand with ink
- Open the PDF and select the ink tool.
- Pick a markup color — the same palette the annotation tools use.
- Draw directly on the page with pointer, pen or finger; strokes render as you go.
- Each stroke is an individual annotation, so a mistaken line deletes on its own.
- Ctrl+S writes the ink into the file as standard PDF ink annotations.
Freehand ink is the fastest thought-to-page path in the editor: sketch the org chart you are proposing over the current one, trace the route on the map exhibit, scribble the correction arrow that no shape quite says.
Structured shapes when precision matters
| Tool | Best at |
|---|---|
| Rectangle | Boxing regions — a form field, a chart area, a paragraph to rewrite |
| Ellipse | Circling — a data point, a signature line, a bulge in a plot |
| Arrow | Direction — from a note to its subject, from old position to new |
| Ink | Everything organic — sketches, checkmarks, crossings-out |
Shapes are click-drag-click: choose the tool, drag the shape's extent, done. Combined with a comment note, a boxed region plus "expand this margin by 5mm" is feedback a print shop can act on without a call.
Colors with a system
Markup colors are shared across annotation and drawing tools, which invites a system:
- One color per reviewer on multi-person reviews.
- One color per topic — red for content, blue for layout, yellow for questions.
- Red reserved for blocking issues in formal review cycles.
The system costs nothing and saves the meeting where everyone re-reads the document to decode the colors.
Drawing and the rest of the toolkit
Drawing pairs with its neighbors naturally:
- Annotations — a drawn rectangle is markup like a highlight; the comment-attaching workflow is identical.
- Signatures — a drawn signature is a special case of ink with legal intent; the signatures guide handles placement, resizing and the type/upload paths.
- Stamps — when the same drawn mark repeats on every page, a stamp is the systematic version.
When drawing is the wrong tool
Drawing communicates; it does not change the document. A sketched replacement for a broken chart is a proposal, not a fix — follow through with image editing (insert the real chart) or text editing (fix the caption), or hand the markup to the AI assistant and ask it to make the change. Keep the sketch layer for thinking and pointing, and the document stays honest about what is content and what is commentary.
What to explore next
- Annotations for the text-markup layer around your drawings.
- Signatures for ink with legal standing.
- Page operations when the sketch says the page itself must change.