Stretchy Studio
Stretchy Studio is a free, open-source web tool for rigging and animating see-through anime models.
What Stretchy Studio is
Stretchy Studio is a free, open-source web tool for rigging and animating see-through anime models. It imports see-through PSDs and builds skeletons with DWPose AI detection or heuristic rigging. Bones and vertex skinning drive mesh deformation, and the timeline can keyframe transforms and mesh vertices directly. The editor accepts .stretch projects, PSD files, and PNG files.
Animation tools include automatic eye clipping, limb bending, shape keys, and synced audio tracks. Rigs and animations can be exported in Spine JSON format. The See-Through model was trained on anime and VTuber-style illustrations, so realistic or other non-anime styles may not decompose correctly. Stretchy Studio can be used on the web or self-hosted. Its MIT License permits use as open-source software; the Free plan is free, with no account or subscription required. The project points users to Discord for help, sharing animations, and feature suggestions.
Good
- Free plan requires no account or subscription.
- Imports PSD and PNG files.
- Timeline keyframes transforms and mesh vertices.
- Exports rigs and animations as Spine JSON.
- Available under the MIT License.
Watch out
- Realistic or non-anime styles may not decompose correctly.
- Support and community help are directed to Discord.
Who it suits
Stretchy Studio suits artists working with anime or VTuber-style illustrations who want a free tool for rigging and 2D animation. It may not suit projects based on realistic or other non-anime artwork.
Verdict
Stretchy Studio offers a focused set of rigging and animation tools at no cost, with both web and self-hosted availability. Its stated style limitation makes the intended artwork an important consideration.
Plans and prices
From Stretchy Studio's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Free forever · no account · no subscription |
The facts
Each one read from Stretchy Studio's own pages, with the date it was checked.
What it does
- Animation features
- The README lists automatic eye clipping, limb bending, shape keys, and synced audio tracks.checked 8 Oct 2026
- Export
- The README says rigs and animations can be exported to Spine JSON format.checked 8 Oct 2026
- Intended art style
- The README says the See-Through model is trained on anime and VTuber-style illustrations and that realistic or non-anime styles may not decompose correctly.checked 8 Oct 2026
- License
- The site identifies Stretchy Studio as free and open-source software under the MIT License.checked 8 Oct 2026
- Mesh deformation
- It supports mesh-based deformation driven by bones and vertex skinning.checked 8 Oct 2026
- Project formats
- The README says the editor accepts .stretch projects, PSD files, and PNG files.checked 8 Oct 2026
- PSD auto-rigging
- It imports see-through PSDs and creates a skeleton using DWPose AI detection or heuristic rigging.checked 8 Oct 2026
- Purpose
- Stretchy Studio is a free, open-source 2D animation tool for rigging and animating see-through anime models.checked 8 Oct 2026
- Support
- The project directs users to Discord to get help, share animations, or suggest features.checked 8 Oct 2026
- Timeline
- Its timeline supports direct keyframe animation of transforms and mesh vertices.checked 8 Oct 2026
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