How to use ONNX Viewer
The tool parses protobuf structure only. It does not run inference, fetch external weights, or prove execution in a target runtime.
- Choose an .onnx model.
- Review IR/opset, producer, input/output names, and shapes.
- Search nodes, operator domains, initializers, and dynamic dimensions.
- Export a summary for debugging and test compatibility in the target runtime.
What this tool helps with
- Inspect structure without Python
- Never executes an unknown model
- Processing runs in this browser tab; the file is not uploaded to FreeTool to perform the task.
Compatibility and limitations
- No inference, benchmarking, or numeric correctness testing
- External data and custom operators are shown as references only
- Huge initializers expose metadata rather than every value
Frequently asked questions
Can it prove browser compatibility?
No. Operator coverage, dynamic shapes, and runtime versions require an execution test.
Does it execute model code?
No, it only parses model structure.
Are weights uploaded?
Processing runs in this browser tab; the file is not uploaded to FreeTool to perform the task.