Frequently Asked Questions

How do I file an issue with WebNN?

File issues to following WebNN issue trackers:

• Design or Specification 
• Chromium Implementation (Component: Chromium > Blink > WebML) 
• ONNX Runtime Web or WebNN Execution Provider 
• WebNN Samples 
• WebNN Developer Preview Demo 

If you’re unsure about which issue type to select, feel free to submit your issue here  and we will help categorize and resolve it.

How do I debug issues with WebNN?

The WebNN API uses standard DOM exceptions for error propagation. When an error occurs, the API throws specific exceptions that can be caught and handled in your code.

Show active WebNN contexts, ONNX environment status, available execution providers or LiteRT backend, and WebNN graph dump in about://webnn-internals

Check the GPU information log, these pages contain detailed diagnostic information about GPU-related errors, histograms and performance.

about://webnn-internals
about://gpu
about://histograms/webnn

• Review the W3C WebNN Specification  for complete error handling documentation.
• Feel free to raise your questions here  and we will help analyze and try to resolve them.