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Paper Jamp
BETA 4.2 BROWSER-NATIVE QUADRUPED RIGGING Online

Paper Jamp is a procedural animator for 2D quadruped rigs. Set the proportions, choose a gait, add your artwork — the walk cycle solves itself.

Open the editor Read the docs

Closed beta · invite only Existing testers sign in

RIG
15 BONES
PRESETS
4 ANIMALS
EXPORT
ZIP PROJECT
Features 01

The loop does the work.

You keep the proportions, artwork and timing. Paper Jamp handles the footfall, IK and bounce while the cycle keeps running.

Gait engine

01

Gait, not keyframes.

Set stride, step height, body bounce, counter-bounce and frequency. Choose a default, dog, cat or horse preset — then drag a value and watch the loop re-solve.

Rig viewport

02

A rig you can see.

Fifteen bones and 2-bone IK keep every leg honest. Drag joints to reshape proportions, or switch a bone to Image mode to place its PNG or SVG directly on the canvas.

Auto-Rig

03

Auto-Rig from a sheet.

Drop in a sprite sheet on a solid background. Auto-Rig splits it in a worker, then you tap each piece onto a body zone. The apply lands as one undo step.

Scene stack

04

A scene, not just a rig.

Add image layers above or below the character, build colour, wheel or image backgrounds, then export a ZIP with a .jamproject file and every asset.

Workflow 02

Start with a stance. Leave with a loop.

There is no timeline to scrub. The rig is sampled continuously, so the animation is already moving while you edit.

  1. 01

    Set the rig

    Start from the default quadruped or a dog, cat or horse preset. Drag any joint to make the proportions yours.

  2. 02

    Tune the gait

    Adjust stride, step height, bounce and frequency. The IK and footfall update live in the viewport.

  3. 03

    Add the art

    Upload artwork per bone or Auto-Rig a sheet. Then compose image layers and a background around the rig.

  4. 04

    Export the scene

    Download a ZIP with the project JSON and its images. Import it back any time without rebuilding your setup.

Beta access 03

Ready to run?

Paper Jamp is invite-only while it is in beta. The editor is one click away if you have credentials — and the documentation is open to everyone.

Enter the editor Read the docs

Beta 4.2 · Invite only · Beta login