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Masks

A mask hides part of an object using the shape of another object — a photo inside a circle, a line drawing revealed by a sweeping rectangle, text that shows a gradient through its letters. The editor offers three variants; all keep both objects editable and animatable.

The Mask and Clip menu open over two stacked shapes, showing Add Mask Effect, Make Mask, Remove Mask and the clip-path commands

VariantWhich object hidesMenuBest for
Maskthe top selected object becomes the mask of the one belowObject › Make Maskclassic SVG masking, including soft edges via opacity
Mask Effectthe lower object controls the visibility of the one above — a live reference, both stay on the canvasObject › Add Mask Effectmasking with an object that also stays visible or animates on its own
Clip Paththe top object’s outline clips the one below (hard edge, the clip shape leaves the canvas)Object › Make Clip Pathcrisp cut-outs, windows, reveals

All three are also in the Mask dropdown of the toolbar (Selection or Transform tool). Each needs exactly two objects selected; a group counts as one object, so group first when several shapes should be masked together.

  1. Place the mask shape above the content in the Object Tree and select both.
  2. Object › Make Mask.

Only the content inside the mask shape stays visible. The mask keeps its own fill and opacity — a semi-transparent or gradient-filled mask fades the content — and it can be moved, reshaped or animated at any time.

  1. Place the masking shape below the content and select both.
  2. Object › Add Mask Effect.

The lower object now defines where the upper one is visible, while remaining an ordinary, independent object — animate it, restyle it, reuse it. Because the link is a reference, removing the effect leaves both objects exactly as they were.

  1. Place the clipping shape above the content and select both.
  2. Object › Make Clip Path.

The top shape’s geometry becomes a clip path (it disappears as a drawable object) and the content below is cut to it — hard-edged, no transparency. A clip made from a single animated path keeps its shape animation; more complex animated clips are frozen at the current frame (a warning tells you).

A rectangle clipped to an ellipse, with the clip shape shown nested under it in the Objects panel

Masks are a favourite animation device: keyframe the mask shape’s position, scale or path and the content is revealed, wiped or spot-lit. A mask that slides across a line drawing, a circle that grows to reveal a photo, a trim-stroke path used as a mask for a “drawing on” effect — all work in every saved format; see SVG ↔ Lottie support for the Lottie limits.

Select the masked object (or the group) and choose Object › Remove Mask or Object › Remove Clip Path — also in the toolbar’s Mask dropdown. For a Mask, the mask shape returns to the canvas as a normal object; for a Mask Effect, the reference is dropped and both objects are unchanged.