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Also Known as DigiData

Digitize data from a scanned image and use convenient copy/paste data transfer to spreadsheet programs such as Microsoft Excel.

Books and reports often omit the original, raw data used to generate graphs. DigXY helps you capture this data using a scanned image of the graph. DigXY (also called DigiData) was written in 1997 and is no longer supported. It is still used and is now provided as free software. It is compatible with Windows XP, 7, and 8, but it has not been tested on Windows 10+.

A web-based alternate is WebPlotDigitizer

DigXY Screenshot
DigXY Screenshot


DigiData Installer

Use Registration Name: "digxy" and Registration Key: "5B1FE3A0"


  • Easy copy/paste export to spreadsheet applications
  • Supports BMP and TIFF image formats
  • Full scanner support
  • Corrects for rotated axes
  • Supports logarithmic axes
  • Attach attributes such as Z coordinates, labels or elevation values, to each data point collected, or once for a data set

About the Author

Mark James wrote DigXY in 1997, both to explore some programming methods and because he did not like to spend research time extracting data from figures. He completed his doctoral studies in Mechanical Engineering at Kansas State University, took a position as Staff Scientist with the National Institute of Aerospace, located at NASA Langley, working on fatigue and fracture of aerospace materials, and is now at Howmet Aerospace, Cleveland, Ohio, USA.

He has worked extensively with Brian Hardeman and Daniel Swenson at Thunderhead Engineering and has kindly agreed to allow Thunderhead Engineering to provide this program.