by cosmosmythos·Motion Graphics
Illustrative cover generated by AnyPlugins — no product screenshot available.
Grease Pencil Auto Interpolate earns its place in the superhive library by automating in-between frames for Grease Pencil, a task that otherwise means going through every layer and calibrating stroke timing by hand. The MIT license and support across Blender 4.3 to 5.1 make it straightforward to fold into an existing 2D pipeline.
Grease Pencil Auto Interpolate is a Blender add-on that automatically generates in-between frames for Grease Pencil animation. Built on Grease Pencil Geometry Nodes, it processes interpolation during real-time playback and leaves your original keyframes untouched, so you can iterate without changing the source drawings. It installs as a Blender extension and starts working automatically once added.
For pairing strokes across keyframes, it offers Auto-Link, a one-click option where the algorithm works out stroke correspondences on its own. A Manual Link mode lets you select two strokes and pair them exactly how you want, using dedicated Manual, Link, Unlink, and Done buttons, with an orange overlay marking which strokes are paired. The matching algorithm doesn't require linking every stroke; for complex cases, a few manual hints are enough for it to resolve the rest.
A LineArt Import feature converts raster images in .png and .jpeg formats into editable Grease Pencil strokes through File > Import. The add-on supports Blender 4.3 through 5.1 and is released under the MIT license.
Grease Pencil Auto Interpolate is best for 2D animators working with Grease Pencil in Blender who want in-between frames generated automatically.
Grease Pencil Auto Interpolate is completely free to download and use.
Grease Pencil Auto Interpolate supports Blender versions 4.3 through 5.1 and is marked as Blender Extension compatible, so it installs through Blender's extension system as an add-on. It works with the Blender-Internal and Blender-Game-Engine renderers as well as Cycles, Eevee, and Freestyle. Because the interpolation runs on Grease Pencil Geometry Nodes, you'll want a Blender build within that supported range for it to function as intended.
Grease Pencil Auto Interpolate includes a LineArt Import feature that turns raster art into editable Grease Pencil strokes. Head to File > Import and choose the GPAI Line Art option, which is listed as accepting .png and .jpeg image files. Scanned drawings, photos of sketches, and digital raster images can all be brought in and converted into strokes you can then edit and animate inside Blender.
Grease Pencil Auto Interpolate does not require you to link every stroke by hand. Its Auto-Link option matches stroke correspondences with a single click, letting the algorithm figure out the pairing. For complex cases you can supply a few manual hints and the algorithm resolves the rest. A Manual Link mode is also available, using Manual, Link, Unlink, and Done buttons, with an orange overlay showing which strokes are paired together.
Grease Pencil Auto Interpolate is listed as free in this catalog. Licensing terms can change, so check the developer's page for current details before you rely on it. The add-on itself is distributed under the MIT license, a permissive license, and it's marked as Blender Extension compatible for installation through Blender's extension system across the supported version range. It currently holds a five-star rating from three reviews.
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