| --- |
| license: other |
| license_name: stabilityai-non-commercial |
| license_link: https://huggingface.co/stabilityai/sd-turbo |
| pipeline_tag: text-to-image |
| base_model: stabilityai/sd-turbo |
| tags: |
| - android |
| - webgpu |
| - on-device |
| - text-to-image |
| - image-to-image |
| - onnxruntime-web |
| - sd-turbo |
| --- |
| |
| # Bonsai Image |
|
|
| On-device AI image generation for Android. A single APK that runs a diffusion |
| model **entirely on your phone's GPU** via WebGPU — no accounts, no servers, no cloud. |
|
|
| This repo hosts the **all-inclusive APK** (~2.5 GB, model bundled inside) because |
| it's over GitHub's 2 GB release-asset limit. |
|
|
| ## Download |
|
|
| **[⬇️ Bonsai-Image.apk](https://huggingface.co/alphastack1/bonsai-image/resolve/main/Bonsai-Image.apk)** (~2.5 GB) |
|
|
| 1. Enable **Install from unknown sources** on your Android device. |
| 2. Download and open the APK. |
| 3. Type a prompt (or attach a photo for image-to-image) and tap **Generate**. |
|
|
| ## Requirements |
|
|
| - **Android 12+** with a recent **Android System WebView / Chrome (121+)** |
| - A **Qualcomm Adreno** or **ARM Mali** GPU (most modern phones) |
| - ~3 GB free storage |
| - WebGPU support in the system WebView — the app reports this in **Settings → Device** |
|
|
| ## How it works |
|
|
| | Layer | Detail | |
| |---|---| |
| | UI | Single-file WebView app, dark theme, on-device history (localStorage) | |
| | Engine | [SD-Turbo](https://huggingface.co/stabilityai/sd-turbo) via `onnxruntime-web` on the **WebGPU** execution provider | |
| | Model | fp16 ONNX (text encoder + UNet + VAE), **bundled in the APK** | |
| | Tokenizer | CLIP, via `@xenova/transformers` | |
|
|
| Generation runs locally. First launch fetches a small (~25 MB) GPU runtime once, |
| then it's fully on-device. |
|
|
| ## Status — experimental |
|
|
| This is an early build. The current engine is **SD-Turbo**, used as a working |
| stand-in. PrismML's **Bonsai 1-bit/ternary image model** (a 1-bit quantization of |
| FLUX.2 Klein) has no Android/WebGPU runtime yet; when one ships, it drops into the |
| same engine slot and the app around it stays identical. |
|
|
| Installs **alongside** the separate [Bonsai LLM](https://github.com/alphastack1/storage/releases) |
| text app — different package, violet icon. |
|
|
| ## License |
|
|
| The bundled SD-Turbo weights are governed by the **Stability AI Non-Commercial |
| Research Community License** (see [SD-Turbo](https://huggingface.co/stabilityai/sd-turbo)). |
| **Non-commercial use only.** |
|
|
