How to use ONNX Model Structure Viewer: practical workflow and checks
Use a real example to prepare input, run ONNX Model Structure Viewer, verify output, understand privacy, and respect current boundaries.
When to use it
Inspect ONNX opsets, inputs, outputs, nodes, tensor shapes, and model metadata read-only. The tool parses protobuf structure only. It does not run inference, fetch external weights, or prove execution in a target runtime.
Practical example
For images: float32[1,3,640,640] with a dynamic detection output, record the opset and custom domains, then actually load it in the target ONNX Runtime release.
Steps
- 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.
Checks after completion
- 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.
Do not rely on a success message alone. Sample counts, fields, dimensions, coordinates, text, or visual output against the source. Production, scientific, business, rights-sensitive, or formal deliverables require validation in the receiving system.
Current boundaries
- 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
Privacy and safety
Local files are processed in the browser tab and are not uploaded to FreeTool to perform the task. IIIF/DZI URLs are requested directly by the browser and remain subject to source logs, CORS, and access policy. Clear downloads, screenshots, and clipboard data after a shared device.
Common 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.