GreasePencil Auto Interpolate (Blender 4.3+ Addon)

LAST UPDATED: May 4, 2026

2D Animation Made Effortless

Grease Pencil Auto-Interpolate speeds up your Blender Grease Pencil animation workflow by automatically generating smooth in-between frames while you focus on what matters most—your creative vision.

The Problem

You sketch perfect keyframes, hit play, and...choppy, jarring movement. Now begins the process of going through every layer, opening the interpolation tool, tweaking in-between settings for strokes, and repeating the process dozens of times for multiple strokes. What should take minutes can stretch into hours of tedious micro-management, especially when your drawings have a ton of individual stroke elements that all need their timing perfectly calibrated.

Your New Animation Superpower

Powered by Grease Pencil Geometry Nodes technology, the addon works invisibly in the background, creating buttery-smooth interpolated animation with real-time playback processing. No complex controls to master, no workflow interruptions.

• Lightning-Fast Processing: Geometry Nodes deliver instant results, no waiting for calculations
• 100% Non-Destructive: Your original keyframes remain untouched—iterate endlessly without fear
• Zero Learning Curve: Works automatically the moment you install it
• Realtime Feedback: See automatic real-time interpolation as you draw
• Clean Interface: No UI clutter, no overwhelming options—just pure creative focus

Just draw & Watch it flow.

BONUS FEATURES:

LineArt Import

Turn your raster drawings into Grease Pencil strokes!

Whether scanned drawings, photos of sketches, or digital raster art - Go to File >>> Import >>> [GPAI Line Art (.png, .jpeg) and get them converted directly into editable Grease Pencil strokes!

 Auto-Link (One-Click Matching)

Don’t want to manually pair everything? Hit “Auto-Link” and let the algorithm figure out stroke correspondences for you. 

Manual Link Mode

Select any two strokes across keyframes and pair them exactly how you want.

The matching algorithm doesn’t require you to manually link every stroke - For complex cases, you only need to provide a few manual hints and the algorithm will figure out the rest!

• “Manual” Button - Enter link mode to start pairing strokes
• “Link” Button - Connect your selected stroke pair
•  “Unlink” Button - Remove a pairing you no longer need
•  “Done” Button - Exit link mode when finished
• Orange overlay to show which strokes are paired together