p2o

A PaddlePaddle New IR (PIR) to ONNX model converter, written in Rust.

Converts PaddlePaddle inference models (inference.json + inference.pdiparams) to the ONNX format.

Installation

Pre-built binaries

Download from GitHub Releases.

From PyPI

pip install p2o

From crates.io

cargo install p2o

Build from source

git clone https://github.com/greatv/p2o.git
cd p2o
cargo build --release

Usage

p2o <model.json> <model.pdiparams> <output.onnx> [--opset 17] [--strict]

Arguments

Argument	Description
model.json	Path to the PaddlePaddle .json model file
model.pdiparams	Path to the PaddlePaddle .pdiparams weight file
output.onnx	Path to the output .onnx model file
--opset <N>	Target ONNX opset version (≥ 10, default: 17)
--strict	Reject lossy conversions (e.g. multinomial → ArgMax)

Example

p2o inference_models/PP-OCRv5_server_det_infer/inference.json \
    inference_models/PP-OCRv5_server_det_infer/inference.pdiparams \
    output.onnx --opset 17