| --- |
| license: bsd-3-clause |
| tags: |
| - super-resolution |
| - real-esrgan |
| - onnx |
| - image-upscaling |
| library_name: onnx |
| --- |
| |
| # Tinier upscale models |
|
|
| ONNX exports of the official [Real-ESRGAN](https://github.com/xinntao/Real-ESRGAN) |
| weights, used by the in-browser AI upscaler at [tinier.app/upscale-image](https://tinier.app/upscale-image) |
| (onnxruntime-web, WebGPU/WASM). |
|
|
| | File | Source weights | Params | Size | |
| |---|---|---|---| |
| | `realesr-general-x4v3.onnx` | realesr-general-x4v3.pth (SRVGGNetCompact) | 1.2M | 4.6 MB | |
| | `realesrgan-x4plus.onnx` | RealESRGAN_x4plus.pth (RRDBNet) | 16.7M | 64 MB | |
| |
| Export details: fp32, opset 17, dynamic H/W axes. |
| Contract: input `float32 [1, 3, h, w]`, RGB in `[0, 1]`, NCHW → output `float32 [1, 3, 4h, 4w]`. |
| |
| Both exports are numerically verified against the PyTorch originals |
| (max abs diff ~1e-6). Conversion script: |
| [`scripts/export-onnx-models.py`](https://github.com/jonathanst29/tinier) in the Tinier repo. |
| |
| License: BSD-3-Clause, inherited from the upstream Real-ESRGAN weights. |
| |
