Open .onnx Files Online — Free ONNX Viewer
Open ONNX File Online — Free & Instant
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📁 Drag & drop your file here
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What Is a .onnx File?
A .onnx file is a data format known as ONNX. ONNX Neural Network This format is created by ONNX and is widely used by developers, analysts, and data engineers.
ONNX files contain structured data data that requires compatible software to open. With OpenAnyFile, you can parse and transform .onnx files directly in your browser without installing any software.
How to Open .onnx Files Online
- Visit OpenAnyFile ONNX page
- Drag and drop your .onnx file onto the upload area, or click "Browse" to select it
- OpenAnyFile automatically detects the ONNX format using magic byte analysis
- View, analyze, and parse and transform your file contents in the browser
- Optionally convert to CSV, JSON, XML or download
Software That Opens .onnx Files
.onnx files are primarily created by ONNX. In the data space, you may encounter .onnx files from third-party tools, online converters, or export functions. Regardless of the source, OpenAnyFile handles them all.
Open .onnx on Different Platforms
- Windows: Use the original software or upload to OpenAnyFile for instant access
- macOS: Preview may not support .onnx — use OpenAnyFile as a universal viewer
- Linux: Open-source alternatives exist, or use OpenAnyFile in any browser
- Mobile (iPhone/Android): OpenAnyFile works on all mobile browsers
Common .onnx File Problems
Opset version compatibility
Other common issues include: your OS not recognizing the file extension, the file appearing corrupted after download, or lacking the required software. OpenAnyFile bypasses all these issues with universal format detection.
Convert ONNX to Other Formats
ONNX files can be converted to 3 formats including CSV, JSON, XML.
Related Data Formats
If you work with .onnx files, you may also encounter these data formats:
- AGG (.agg) — Open & convert .agg files online
- ALTO (.xml) — Open & convert .xml files online
- ANNDATA (.h5ad) — Open & convert .h5ad files online
- ARROW (.arrow) — Open & convert .arrow files online
- Arrow IPC (arrow) — Open & convert arrow files online
- ARROW_STREAM (.arrows) — Open & convert .arrows files online
- ASDF (.asdf) — Open & convert .asdf files online
- ASN1 (.asn1) — Open & convert .asn1 files online
- ASYNCAPI (.yaml) — Open & convert .yaml files online
- AVRO (.avro) — Open & convert .avro files online
Popular ONNX Conversions
Frequently Asked Questions
What is a .onnx file?
A .onnx file is a data format called ONNX. ONNX Neural Network
How do I open a .onnx file without installing software?
Upload your .onnx file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .onnx files?
.onnx files are typically created by ONNX.
Can I convert .onnx to another format?
Yes. OpenAnyFile converts .onnx to CSV, JSON, XML.
Is it safe to open .onnx files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .onnx on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.