Extract text from backup and data files (SPG)
To convert SPG data files to another format, you need TCP Optimizer or other Backup software.
To convert other file formats to the "Configuration Backup File" file type, you need software like TCP Optimizer or a similar tool.
The .spg file extension primarily represents a TCP Optimizer Backup File created by SpeedGuide.net TCP Optimizer. This file stores Windows registry network settings, allowing users to safely restore previous TCP/IP configurations after tweaking their internet speed. Another significant use for .spg files is as a Spectroscopy Group Data File used by scientific applications like Thermo Nicolet OMNIC or GRAMS/32 to store spectral analysis data. Additionally, it is occasionally used as a business process model file by iGrafx, which stores data as a compressed ZIP archive under the hood.
Because these files serve highly specific software ecosystems, they present severe usability disadvantages. They are deeply proprietary and essentially useless outside of their native applications. A TCP Optimizer backup cannot be safely edited in a standard text editor without risking registry corruption. Similarly, spectral data files require specialized, expensive software licenses to view or analyze the embedded scientific graphs. This creates a major bottleneck when sharing configurations or scientific results with colleagues who lack the requisite software.
For iGrafx process models, changing the extension to ZIP allows you to extract the underlying XML and image assets. For configuration files, converting the raw data to readable text formats like TXT or CSV is the most practical solution for auditing, though direct conversion tools are rare.
Because most .spg files rely on closed, proprietary encoding, standard online converters fail to process them. Often, only the original software can properly read or export the data.
Convert.Guru analyzes your SPG file, detects the exact format, and lets you read the text inside.
Users also converted SVG, JPG, PNG, JPEG, PDF, WEBP and JFIF files.
If you want to convert SPG file to BAK, BACKUP, OLD, TMP, TEMP, ARC, ZIP, TAR, GZ, 7Z, RAR or ISO, you can use TCP Optimizer or similar software from the "Network Settings Backup" category. In the File menu, look for Save As… or Export….
To convert SNAPSHOT, OLD, IMG, RESTORE, ISO, COPY, VMDK, TMP, VHD, BAK, ARCHIVE or BACKUP files to SPG, try TCP Optimizer or another comparable tool in the "Network Settings Backup" 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 SPG converter.