The Polyline tool draws a segmented line. Polylines can be configured so that their start and end points touch or overlap, but they are still considered open lines; for closed shapes, use the Polygon Tool.
For a similar markup with measurements, see the Polylength Measurement Tool.
- Select the Polyline tool using one of the following methods:
- Go to Tools > Markup > Polyline.
- Click on the
- Press SHIFT+N.
- Click on the PDF to define the first point of the segmented line.
- Click again to define the next point. A line segment is drawn between this point and the previous one. Repeat as needed.
- To complete the line, double-click when placing the last point
or press ENTER after placing the last point.
- To close the line path and connect the last point to the first point, place the last point over the top of the first point
or press C on the keyboard after placing the last point.
Note: A Polyline is an open line, even if the first and last points touch. Use the Polygon tool to create a closed shape.
- Hold down SHIFT to draw lines that are at horizontal, vertical, or 45° angles.
A control point defines where two line segments meet in multi-segment markups. Control points can be added or removed from these markups.
Further, the line segments of these markups can be converted to curves or arcs at their control points, allowing them to conform to nearly any shape.
You can attach a note to nearly any markup that does not have a text box of its own. Simply double-click the markup to open the Note pop-up window. Notes attached to markups are functionally similar to the Note Tool.
You can add an action to nearly any markup. Simply right-click the markup and select Edit Action to open the Action dialog box.
Markups might present with one or more of several indicator icons alerting users of certain conditions or attachments. These icon indicators appear below the markup to the right (or, in the case of grouped markups, below and to the right of the group) and include:
Action: Indicates that an action has been defined for this markup. Clicking this icon triggers the action.
Capture: Indicates that the markup has an embedded media, typically an image or video. Clicking this icon opens a preview window showing the embedded media (or first piece of media, if multiple are embedded) and provides easy access to several useful tools.
Reply: Indicates the existence of one or more replies to the markup in the Markups list. Hovering over the icon previews the replies and clicking it opens the Markups list (if it's not already open) and jumps directly to the markup's entry there. Users can turn off the ability to see reply indicators in the View menu.
Select a markup to reveal its control handles. Each handle controls a different aspect of the markup's size and orientation.
To rotate the markup, click and drag the orange handle outside the markup (when the markup is first placed, it will be at the top). By default, the markup is rotated in increments of 15°; to rotate in increments of 1°, hold down SHIFT while dragging.
The rotation can also be entered in the Rotation field found in the Layout section of the Properties panel.
To resize a segment or change its angle, click and drag the appropriate yellow handle.
- Hold down
CTRLwhile dragging a yellow control handle to curve the lines attached to it. See Working with Curved Markups for more information.
To scale the markup up or down, click and drag the appropriate purple handle.
See Editing Markups for more information.
The appearance of the Polyline markup is configurable, including its color, thickness, pattern, ends, and opacity.
To change the appearance of a Polyline markup, select it and click the Properties panel.
Color: Sets the line color.
Fill Color: Controls the fill color of the endpoints.
Highlight: Makes the fill color and line transparent so underlying content shows through.
Opacity: Sets opacity level of the line and endpoints, from 0 (invisible) to 100 (opaque).
Line Width: Sets the line thickness in points. A setting of 0 effectively renders the line invisible.
Style: Determines the line pattern.
Start and End: Controls the appearance of the endpoints for each side of the line. The diagram below shows samples of each type of endpoint.
Each endpoint has an associated Scale that determines the size of the endpoint in relation to the Line Width. By default, it is set to Auto and will automatically adjust as the Line Width is changed.