SPARKFXLAB
SPARKFXLAB
Preview and author VFX, projectiles, and animations directly in the Unreal Editor — no Play Mode required
A production-grade editor tool for VFX artists and technical artists. Position spawn points, attach mesh props, edit Niagara parameters live, trigger effects at precise frames, and export directly to Animation Notifies — all without leaving the editor.
Linear, arc, and ballistic trajectories, visualized live.
Drag VFX spawn points, mesh props, and your character directly in the editor.
Attach additional mesh props with independent animations per slot.
Tweak exposed params in real time, save as new asset or override original.
Character position, VFX offsets, mesh prop transforms, and Niagara overrides.
VFX, audio, projectiles, and camera shakes — all exported directly.
One timeline with full montage support.
Niagara particles show the exact state at any timeline position, forward or backward.
Fan multiple simultaneous projectiles across a cone instead of firing them all in the same direction.
Per-track interval and Play Audio toggle for VFX and Projectile tracks.
Frame-step (single-frame back/forward) transport controls.
Built for VFX artists, technical artists, animators, and designers who need fast, trustworthy visual timing — without waiting on Play Mode. Whether you're prototyping a combat ability, validating cinematic timing, or presenting effects for director review, SparkFXPreviewer gives you a dedicated authoring environment that stays out of your way.
A look at the new two-panel layout and core workflow in SparkFXPreviewer v2.0.0.
Installing SparkFXPreviewer from the Fab Marketplace, start to finish.
Saving and loading complete effect setups for repeatable, shareable iteration.
Adjusting playback from 0.05x to 2x for frame-precise VFX inspection.
Linear, arc, and ballistic trajectory preview, plus rapid fire testing — visualize timing before it ever hits Play Mode.
To avoid this, we recommend a full remove-and-reinstall whenever you update SparkFXPreviewer:
...\Engine\Plugins\Marketplace\) and manually delete any remaining SparkFX... folder.This takes an extra minute but guarantees you're running a clean install every time.