Filmstrip generator for plugin UIs

One PNG in.
A flawless animated filmstrip out.

StripKit turns a single transparent image into a frame-perfect sprite sheet for rotary knobs, faders, sliders, and meters — the exact format a JUCE-style LookAndFeel loads, one frame per parameter value.

  • 4control types
  • 32–128frames
  • @2xHiDPI export
The StripKit application window
App preview
Everything in the box

Built for plugin asset production

From a single source image to a shippable, manifest-bound sprite sheet — without leaving the app.

Rotary knobs

Sweep 270°, 300°, 360° or any custom range, rotated about the knob's true centre so it spins clean — no wobble.

Faders & sliders

Vertical faders and horizontal sliders: the cap travels its track with pixel-accurate end margins.

▮▮▮

Meters

Procedural LED segments or layered on/off art, four fill directions, discrete or continuous.

Smart alignment

Auto-detects the spin centre on load; a draggable crosshair lets you nail it by eye on a smooth 1024-step preview.

Filmstrip importer

Drop an existing strip — StripKit detects its frame count and orientation, extracts a frame, or re-stacks it.

Batch processing

Point it at a folder and render a whole set of sources to strips in one off-thread pass, with progress and cancel.

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skin.json manifest

Emit a schema-valid manifest that binds each strip to a parameter id — ready for a JUCE LookAndFeel loader.

Crisp rendering

Supersampling + a Mitchell cubic resampler keep rotated edges sharp; export @2x for HiDPI in one toggle.

Live preview

Scrub, play, or step frame-by-frame and watch the control animate before you ever hit export.

Free download

Get StripKit for Windows

A lightweight installer with an optional desktop shortcut, Start-Menu entry, and a clean uninstaller. Pulls the latest build straight from GitHub Releases.

Download for Windows

Windows 10/11 · x64

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What's new

Recent updates

The three latest releases. See the full changelog →

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