Extract text from Group 3 fax files (G3F)
To convert G3F fax files to another format, you need Fax Viewers and Bentley gINT or other Raster Image software.
To convert other file formats to the "Group 3 Fax Image" file type, you need software like Fax Viewers and Bentley gINT or a similar tool.
The .G3F format primarily stores Group 3 Fax images, a legacy 1-bit monochrome standard created by the CCITT for transmitting documents over analog phone lines. Alternatively, .G3F files act as proprietary geotechnical data projects for specialized engineering software.
Fax variants are typically opened using vintage telecommunications tools like Zetafax or versatile image viewers like IrfanView with the correct plugins installed. Geotechnical .G3F files require heavy engineering software like Bentley gINT or Geosoft Oasis montaj.
Users must convert .G3F fax files because they are obsolete, lack modern metadata, and are entirely unsupported by modern web browsers, mobile devices, and standard operating systems. Geotechnical .G3F databases are notoriously closed-source and require expensive software subscriptions just to view the contained data points.
The best target formats for .G3F fax files are PDF for multi-page document archiving or TIFF for lossless image preservation. Converting geotechnical data usually requires exporting to CSV or XLSX directly from the original source software, as raw file conversion often destroys the structured data relationships.
This file format is exceptionally difficult to open or convert blindly. Legacy fax files often lack standard digital file headers, causing decoders to crash, while the geotechnical databases use undocumented proprietary binary structures. Standard online converters fail because they cannot distinguish between the two completely different file types. Just drag and drop your file to identify the format, view it, and convert it when possible. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your G3F file, detects the exact format, and lets you read the text inside.
Users also converted DGR, I3F and 19 files.
If you want to convert G3F file to JPG, PDF, PNG, GIF, BMP, TIFF, TIF, WEBP, ICO, CUR, PSD or PSB, you can use Fax Viewers and Bentley gINT or similar software from the "Fax Image and Geotechnical Data" category. In the File menu, look for Save As… or Export….
To convert RAW, PNG, AI, NEF, PSB, DNG, SVG, GIF, EPS, JPG, ARW or PDF files to G3F, try Fax Viewers and Bentley gINT or another comparable tool in the "Fax Image and Geotechnical Data" category.
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 G3F converter.