b2KIT

Motion Path Animator

Animate elements along custom SVG paths with speed, rotation, and offset keyframe controls.

Tested tool guide Tested browser tools Checked August 16, 2026

What Motion Path Animator does, with a checked example

Motion Path Animator turns SVG path data into a timed movement route for an element. The path supplies the geometry, while speed, rotation, and offset keyframes determine how the element travels and faces along it. Straight lines, curves, and multi-segment paths can therefore produce different motion without changing the animated element. A common surprise is that the element follows the path by its reference point. Its visible edges may appear displaced from the curve, especially when the element is large or asymmetrical.

Worked example

A concrete input and expected output from the current implementation.

Input

SVG path: M 0 0 L 100 0
Offset keyframes: 0%, 50%, 100%
Rotation: fixed at 0 degrees

Expected output

The element's reference point starts at (0, 0), reaches (50, 0) at the 50% offset, and ends at (100, 0). Its orientation remains at 0 degrees.

The path is a horizontal segment with length 100 because sqrt((100 - 0)^2 + (0 - 0)^2) equals 100. Half of that path length places the reference point at x = 50.

How the result is produced

1

Path geometry

The custom route is expressed as SVG path data. M establishes a starting point, while commands such as L, C, and Q add straight or curved segments. Absolute and relative commands can describe the same shape using different coordinates. Offset percentages refer to progress over the resulting path, rather than to the number of commands in the path string.

2

Timing and orientation

Offset keyframes identify selected positions along the path, and the animation moves between those positions over time. Changing their spacing can concentrate more of the movement in one portion of the animation. Speed controls affect how quickly the route is traversed. Rotation controls determine whether the element keeps a chosen angle or changes orientation as it follows the route.

Good uses

  • Test how an arrow, vehicle, or character should travel around a curved route before reproducing the motion in a larger interface.
  • Compare fixed orientation with path-following rotation when an icon must either remain upright or point in its direction of travel.
  • Adjust offset keyframes for a logo reveal, orbiting badge, or decorative object that needs to pause, accelerate, or emphasize particular sections of an SVG curve.

Limits and checks

  • SVG path coordinates belong to a coordinate system. The same numerical path can appear at a different size or position when placed in a viewport with different dimensions or scaling.
  • An offset of 50% means half of the path's measured length. It does not necessarily mean the midpoint between the path's minimum and maximum x or y coordinates.
  • Rotation changes the element's orientation, not the route itself. Sharp corners can create abrupt direction changes, while a circular or visually symmetrical element may make rotation difficult to notice.

Common questions

What does a 50% offset mean on a curved path?

It marks the point halfway through the path's total geometric length. It is not necessarily the visual center of the drawing, the middle path command, or the average of the endpoint coordinates. If one section contains a long loop, the halfway point can fall inside that loop even when it looks off-center.

Will rotation always make the element point forward?

No. It points along the direction of travel only when the selected rotation behavior follows the path tangent. A fixed rotation keeps the same angle throughout the movement. At a sharp corner the tangent changes abruptly, and reversing travel can make a tangent-aligned element face the opposite direction.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.

Related Tools