GTM → IGS · Windows

Convert GTM to IGS

Fast GTM to IGS conversion for Windows. reaConverter supports 800+ formats with batch processing and built-in editing tools.

Online converters too slow for your GTM files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure.

DownloadGTM to IGS ConverterConvert
GTM to IGS
Online
.gtm.IGS
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .gtm Files to .igs?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting GTM files in under two minutes.

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Install reaConverter

2. Load your GTM files

Add GTM files to reaConverter. One file or a thousand, the process is the same. Everything runs locally on your machine.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

Load your GTM files into reaConverter

3. Select IGS as output format

Select IGS from the output format list and set your destination folder. You can also adjust quality and compression settings.

Select IGS as output format

4. Start GTM to IGS conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

Start Conversion

When finished, your new .igs files will be waiting in the destination folder.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your GTM files into IGS without GIS software - all files processed on your PC for maximum privacy and speed.

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Map Data Workflow

From map data to a working drawing

Converting GTM to IGS usually means handing GIS data to someone who works in CAD. reaConverter makes that hand-off without a GIS seat on either side, for one layer or a whole delivery.

  • Convert every layer in a folder to IGS with the same settings
  • Go the other way too, from DWG to Shapefile, when the GIS team needs the drawings back
  • Render the same data to PDF for a quick review copy
  • Pick up new data automatically with Watch Folders, or script the job from the command line

Everything runs on your PC, which matters for cadastral, utility and client data that should not pass through an upload form.

GIS data conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 28, 2026
Finally an app that actually opens my weird files! Saves me from format frustration daily.
Kyle Brooks
Kyle Brooks
Happy User
This converter delivers exceptionally quick format conversions with reliable results every time.
Brian White
Brian White
Happy User
Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch.
Marcus White
Marcus White
Healthcare IT
Creating marketing materials for various platforms requires multiple file versions from single sources. reaConverter's workflow automation lets us generate PNG, JPEG, and SVG variants from AI and PSD files simultaneously. The color profile management ensures brand consistency across all outputs, and the processing speed allows for last-minute changes without delaying deadlines.
Rebecca Turner
Rebecca Turner
Marketing Agency CEO
I was drowning in mismatched file formats until I found reaConverter. The one-click conversion and editing tools simplified everything, and the pricing is reasonable for small businesses. Now I spend less time troubleshooting and more time growing my brand!
Emily K.
Emily K.
E-commerce Entrepreneur
This program is incredibly simple and user-friendly, even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!
Kevin Harris
Kevin Harris
Happy User

FAQ

GTM to IGS Conversion

What are GTM files?

GTM is an image and data storage format associated with GPS TrackMaker, an application created by Geo Studio Technologies Ltd. for real-time navigation. The software allows you to create vectorial maps supporting tracklogs, routes and waypoints. GTM files can contain any of these features and connected digitized images.

What are IGS files?

The IGS (Initial Graphics Exchange Specification) file format is a standardized CAD data exchange format used to transfer 2D and 3D model data between different CAD systems. Developed in the 1980s, IGES ensures compatibility across various engineering and design software by storing geometric data, annotations, and structure in a neutral ASCII or binary format.

Can reaConverter convert GTM to IGS?

Yes! reaConverter instantly converts .gtm to .igs with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert GTM files directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a Windows converter for 800+ formats, GIS data among them. For GTM to IGS it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document formats.

Why choose offline conversion with reaConverter?

reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.

Can I convert GTM to IGS online?

If you only need to convert a few GTM files to IGS format, feel free to try our free online free online GTM to IGS converter — perfect for small batches with no installation needed!

How can I turn GTM files into IGS on my computer?

The best way to change GTMs to IGSs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from GTM to IGS.

How can I automate GTM to IGS files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert GTM files to IGS using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line gtm to igs converter for batch processing.

What else can I do with reaConverter?

Convert vector imagesChange image DPIConvert DICOM imagesCrop pictureTrace images to vector

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Beyond format conversion

Batch conversion, editing, and processing across 800+ formats, from RAW and HEIC to DICOM, DWG, and PDF. Everything runs locally, with no cloud and no upload limits.

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