Illustrator: How to Round Corners on Shapes and Paths
To round corners in Adobe Illustrator, select a shape or path and drag one of its circular Live Corner widgets inward; for a precise result, enter a corner radius in the Properties or Transform panel. You can round all corners together or adjust individual corners, depending on the object and your selection.
Find and use Live Corner widgets
- Choose the Direct Selection tool (the white arrow, shortcut A) and click the shape’s path. For a rectangle, you can also select it with the Selection tool, then switch to Direct Selection.
- Look for small circular widgets near the corners. Drag a widget toward the center of the shape to make the corner round; drag outward to reduce the rounding.
- To change every corner at once, select the relevant corner points or use the corner controls shown in the Properties panel. When the linked-corners control is enabled, changing one radius applies it to all selected corners.
The widget appears only when Illustrator can identify a corner on the selected path. If you do not see one, zoom in, check that the path is selected with Direct Selection, and make sure the object has not been converted into a shape that no longer has editable corner information.
Set an exact corner radius
Dragging is convenient for visual adjustments, but a numeric radius is better when several corners need to match. Select one or more corner points with the Direct Selection tool, then find the corner-radius field in the Properties panel or the Transform panel. Enter a value and press Enter or Return. The field uses the document’s current measurement units, so a radius entered in points, millimeters, or inches may look different depending on the document setup.
Illustrator’s corner controls can also offer a corner style, such as rounded, inverted round, or chamfered, depending on the selected object and version. The radius describes the size of the corner treatment; it is not the width of the overall shape. A radius cannot exceed the available space at a corner. If you enter a value too large for the geometry, Illustrator constrains it so neighboring corners do not overlap.
For example, to soften a 120-by-60-pixel rectangle, select its four corners and enter a modest radius such as 8 pixels. The result is a consistent rounded rectangle. If you want only the top two corners rounded, select those two corner points before entering the value, rather than unlinking and changing the entire shape.
Round only selected corners
Use Direct Selection to select individual anchor points. Click one corner point, or Shift-click additional corner points, then adjust the widget or radius field. This is useful for interface cards, labels, icons, and panels where the top edge is rounded but the bottom edge remains square.
Take care when selecting points: clicking the path with the black Selection tool selects the whole object, while the white Direct Selection tool lets you target anchors and segments. If multiple objects are selected, corner controls can apply to all compatible selected corners, so inspect the selection before entering a shared value.
Round corners with the Rectangle tool
For a new rounded rectangle, choose the Rectangle tool, draw the shape, and adjust its corner widgets. You can also enter dimensions and corner settings in the rectangle’s options when creating it, where available. A rectangle created this way generally retains editable corner controls, making later changes easier than manually drawing a rounded outline.
For an existing rectangle, select it and adjust the Live Corner widgets. This is usually preferable to applying a separate effect because the corners remain directly editable. If you want a standard capsule or pill shape, increase the radius until the short sides become semicircular; the maximum practical rounding is limited by half the shorter side.
Live Corners, effects, and expanded paths
Live Corners change the geometry of selected path corners while preserving editable anchor points. They are not the same as a rounded-corner effect applied through the Effects menu. Effects can be useful when you want an appearance that can be revised later, but they may be governed by effect settings and may not expose the same per-corner controls as Live Corners.
Expanding an object or effect converts its editable appearance into path geometry. This can help when handing artwork to a workflow that needs ordinary paths, but it reduces flexibility: the original radius control may no longer be available, and the rounded section may instead consist of additional anchor points. Keep an editable copy before expanding if you may need to revise the radius.
Rounding is also different from smoothing a path. A corner radius creates a controlled curve where two segments meet; the Smooth tool or anchor-handle editing changes the path’s curvature more freely and may alter adjacent segments. Choose Live Corners for consistent, measurable rounding and manual smoothing for irregular curves.
Common problems and fixes
- No widgets are visible: Select the path with Direct Selection, zoom in, and check whether the selected points form actual corners. Smooth points and some complex or expanded paths may not expose Live Corner widgets.
- The whole object moves instead of rounding: Switch from the black Selection tool to the white Direct Selection tool and drag the circular corner widget, not the path edge or bounding box.
- The radius stops increasing: The shape may have reached the geometric limit imposed by its size or nearby corners. Enlarge the shape, reduce the radius, or adjust the shape’s proportions.
- Every corner changes: You likely selected all corner points or have linked corner values. Select only the desired anchor points and check the corner-link control.
- The shape looks uneven: Confirm that the corners use the same radius, and check for transformed or nonuniformly scaled objects. A circle or rounded corner can appear stretched when its object is scaled differently horizontally and vertically.
Illustrator’s panel layout and the precise location of corner controls can vary by version, workspace, and selection. If a control is missing, open the Properties panel or Transform panel from the Window menu, then select the path again. Avoid judging a tiny radius at a distant zoom level; inspect the artwork at a useful magnification and, when appropriate, in its intended output size.
Frequently Asked Questions
How do I round one corner in Illustrator?
Select the path with the Direct Selection tool, click the corner anchor you want, and drag its Live Corner widget or enter a radius. Leave the other corner points unselected.
Can I type an exact corner radius?
Yes. Select the corner point or points and enter a value in the corner-radius control in Properties or Transform. The value is interpreted using the document’s measurement units.
Why can’t I see the corner widgets?
Make sure a compatible path is selected with Direct Selection and zoom in. The selected point may be smooth rather than a corner, or the shape may have been expanded or otherwise changed.
How do I make every corner the same?
Select the shape’s corner points and use the linked-corners control, or select all four corners before setting the radius. Check the result if the shape has unusual proportions.
Can I undo rounded corners later?
While the path retains editable Live Corner controls, select the corners and reduce the radius, including setting it to zero. If the appearance was expanded into ordinary paths, you may need to edit the resulting anchors or return to an unexpanded copy.
Related
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