STDF Converter

Extract text from STDF files


Drop or upload your .STDF file
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How to extract text from your STDF file

  1. Click the "Select File" button above, and choose your STDF file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert STDF to another file type

To convert your STDF file to another format, you need SmarTest or other Data software.

Convert a file to STDF

To convert other file formats to the "Semiconductor Test Data" file type, you need software like SmarTest or a similar tool.


About STDF files

The .stdf (Standard Test Data Format) is the de facto binary standard for the semiconductor industry, originally designed by Teradyne but now supported by nearly all ATE (Automatic Test Equipment) vendors like Advantest (SmarTest) and Cohu. These files act as a digital flight recorder for chip manufacturing, storing millions of parametric test results, hardware/software binning data, and yield statistics in a compact binary stream.

Because .stdf files are binary, they are completely unreadable to humans and incompatible with standard office software. Engineers often face friction when trying to debug low yield or analyze specific part failures because they cannot simply double-click to open the file in Excel or a text editor. The files can also be massive (gigabytes in size), making them difficult to share or parse without specialized yield management software. To extract actionable insights, users typically convert the binary stream into CSV, JMP, or Excel formats, allowing for analysis in tools like JMP, Spotfire, or Python pandas.

Convert.Guru analyzes your STDF file, detects the exact format, and lets you read the text inside.

Users also converted STD, STD_1, TXT, PDF, CSV, KDT, TFT, FINAL and TEXT files.


FAQ

If you want to convert STDF file to CSV, TEXT, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT or DB, you can use SmarTest or similar software from the "Semiconductor Test Data Logging" category. In the File menu, look for Save As… or Export….

To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to STDF, try SmarTest or another comparable tool in the "Semiconductor Test Data Logging" category.



The STDF Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our STDF converter.