Your character.
Every expression.
Pipeline-ready.
Upload a character reference, generate a full library of consistent expression PNGs, and drop them straight into your AI video pipeline. Built by a developer who needed exactly this.
Free to start. No credit card. 1 character, 10 expressions, 1 scene.
11 curated expressions · transparent PNG · export-ready
The problem
AI video pipelines need character expressions. Getting them is the unsolved part.
Your app can generate voiceovers, stitch clips, and auto-publish. But switching a character from happy to shocked to laughing mid-video means you need a full library of consistent transparent PNGs. There's no good way to get them. Until now.
Generated one at a time
Existing AI tools make you babysit every prompt. That doesn't work when your pipeline needs 20 expressions for a single character.
Inconsistent across renders
"Laughing" and "shocked" from the same generator look like two different characters. Consistency is the hard part.
Not built for pipelines
Consumer art tools weren't designed for programmatic workflows. You get a UI, not a ZIP of named files your code can use.
How it works
Three steps. Full expression library.
Upload your character
Drop in a reference image. One clean illustration is all CharacterKit needs to build a consistent expression library from.
Define your expression set
Type each expression name and prompt — or let AI suggest scene-relevant ones based on your scene descriptions. Queue them all at once.
Features
Built for pipelines, not paint programs.
Batch generation
Queue your full expression set and walk away. Your pipeline needs 20 consistent expressions — generate them all in one batch, not one agonising prompt at a time.
AI expression suggestions
Describe your scenes and get relevant expression ideas instantly. Scene-aware — a classroom scene gets different suggestions than a spaceship cockpit.
Who it's for
If your app generates video, this is for you.
AI video app builders
Building a Shorts generator, explainer tool, or AI voiceover app that needs a character to react and emote as the video plays out.
- YouTube Shorts generators
- AI voiceover video apps
- Explainer video tools
- Automated video pipelines
Pricing
Try it free. Ship when it works.
Free
- 1 scene
- 1 character
- 10 expression generations
- Transparent PNG export
- Scene compositing
Pro
Your app needs a character.
CharacterKit generates one.
Built by a developer who needed this for their own AI video app. Free to try, no card required.
Start building — it's free