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.
Lay Niagara tracks on a color-coded timeline against the real animation, then scrub both together frame by frame.
See muzzle, travel and impact as one sequence, and tune rate of fire and spread before anything hits gameplay.
Build the moment around your characters, then adjust effects live while it plays.
Judge the whole hit, with sound and camera alongside the visuals.
When the timing is right, it goes into the asset. Nothing is retyped.
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.