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STDF V4 · .stdf · .std · .stdf.gz
Why engineers trust this
All parsing happens in WebAssembly inside your browser. No file data ever touches a server.
Content Security Policy blocks all third-party connections. No data leaves to external servers.
Parser source available for security review. No obfuscation, no minified blobs.
Subresource integrity hashes ensure the browser rejects any modified scripts.
STDF (Standard Test Data Format) is the semiconductor industry standard binary format for storing ATE results. Binary-encoded records for lots, wafers, devices, parametric tests, and bin classifications.
V4 — covers 90%+ of modern ATE output including Advantest, Teradyne, and Cohu.
Yes. Your files are parsed locally — no data is uploaded. CSP headers block outbound connections. Verify in DevTools.
We output CSV which Excel opens natively. Just double-click.
.stdf.gz supported. Auto-detected and decompressed.
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