.igs File Extension

Initial Graphics Exchange Specification

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What is a .igs file?

The IGES (Initial Graphics Exchange Specification) file format, identified by the .igs extension, is a vendor-neutral file format designed for transferring 2D and 3D geometric data between different CAD (Computer-Aided Design) systems. It was one of the earliest standards developed for this purpose, aiming to overcome the interoperability issues that arose from proprietary CAD file formats. IGES files store information about geometric entities such as points, lines, arcs, splines, surfaces, and solids. They can also contain annotation data like dimensions and text. While IGES has been largely superseded by more modern formats like STEP (.stp), it remains in use, particularly for legacy data and in situations where a widely supported, albeit older, standard is preferred. The format is an ASCII-based format, making it relatively easy to inspect and edit manually, although this also contributes to larger file sizes compared to binary formats. IGES files are often used in industries such as automotive, aerospace, and manufacturing for exchanging design data between different departments or companies using different CAD software packages. The standard is defined by ANSI standard ANSI Y14.26M.

.igs File

Initial Graphics Exchange Specification

Compatible Software Alternatives

Software Compatibility

Windows

  • AutoCAD
  • SolidWorks
  • CATIA
  • NX (Unigraphics)
  • Creo Parametric (Pro/ENGINEER)
  • FreeCAD
  • DraftSight
  • Rhino
  • Open Cascade Technology (OCCT)

macOS

  • AutoCAD
  • SolidWorks (via Boot Camp or Parallels)
  • CATIA (via Boot Camp or Parallels)
  • NX (Unigraphics) (via Boot Camp or Parallels)
  • Creo Parametric (Pro/ENGINEER) (via Boot Camp or Parallels)
  • FreeCAD
  • Rhino
  • Open Cascade Technology (OCCT)

Linux

  • FreeCAD
  • Open Cascade Technology (OCCT)
  • VariCAD
  • BRL-CAD

Mobile

  • Autodesk A360
  • eDrawings

Alternative File Formats

Related Categories

Data Files Archive FilesAudio FilesDocument Files

Frequently Asked Questions About .igs Files

To open a .igs file, you need compatible software. Here are some options:

  • AutoCAD
  • SolidWorks
  • FreeCAD
  • Autodesk A360

Check the "Software Compatibility" section above for a complete list of programs that can open .igs files on different operating systems.

To convert a .igs file to another format, you can:

  1. Use compatible software: Many programs that open .igs files also allow saving or exporting to different formats. For example, you might try using AutoCAD or AutoCAD.
  2. Try online conversion services: Websites like Zamzar, CloudConvert, or Online-Convert can transform files between formats without installing software.
  3. Convert to recommended alternatives: For .igs files, consider converting to .STEP, .STL, .DXF for better compatibility.
  4. Specialized conversion tools: Search for ".igs converter" to find tools specifically designed for this file type.

Note: Converting files may result in some loss of formatting, quality, or functionality depending on the compatibility between formats.

If you're having trouble opening a .igs file, try these troubleshooting steps:

  1. Verify the file extension is correct: Sometimes files may be incorrectly named. Make sure the file truly is a .igs file.
  2. Update your software: Ensure you're using the latest version of your chosen program.
  3. Try alternative software: If one program doesn't work, try another from our compatibility list.
  4. Check for file corruption: The file might be damaged. Try to obtain a new copy if possible.
  5. Look for file converters: Converting to a more common format might help.

Like any file type, .igs files can be safe or potentially risky depending on their source:

  • From trusted sources: Files from reputable websites, colleagues, or friends are generally safe.
  • From unknown sources: Exercise caution with files from unfamiliar websites or emails.

Safety recommendations:

  • Always scan files with antivirus software before opening them
  • Keep your operating system and applications updated
  • Be particularly cautious with executable file types

Common issues with .igs files include:

  • Compatibility problems: Older or newer versions of software may not fully support certain .igs files
  • Missing elements: Fonts, media, or other components may not transfer correctly between systems
  • File corruption: Incomplete downloads or transfer errors can damage files
  • Format variations: Different software may implement the .igs format in slightly different ways

If you're experiencing issues with a specific .igs file, you might need to:

  • Try opening it with alternative software
  • Ask the file creator to save it in a different format
  • Look for specific patches or updates for your software

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