GTI → IGES · Windows

Convert GTI to IGES

GTI to IGES for whole archives of tiles, layers or survey files at once, with nothing uploaded and no account required.

Batch GTI to IGES conversion doesn't have to be complicated. reaConverter processes entire folders with consistent quality settings. Works offline with no internet required, so you can convert anywhere, anytime. Surveyors and planners use it to pass GIS data to colleagues who work in other software.

DownloadGTI to IGES ConverterConvert
GTI to IGES
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.gti.IGES
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .gti Files to .iges?

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

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Install reaConverter

2. Load your GTI files

Open reaConverter and import your .gti files. No file limits, no slowdowns. Add as many as you need.

Drag files into the window, use the Add Files button, or select entire folders.

Load your GTI files into reaConverter

3. Select IGES as output format

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

Select IGES as output format

4. Start GTI to IGES conversion

Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Start Conversion

Conversion complete? Your IGES files are saved to the destination folder, ready to use.

Step by step

How It Works

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

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Technical note

How GTI and IGES differ in practice

GTI holds no pixels of its own. It is an index: a list of other raster files plus instructions for mosaicking, clipping or rescaling them, so it converts only when every file it points to is present at the path it records. A GTI copied to another machine on its own produces nothing usable. Converting to IGES renders the assembled result into one real file, which is often the whole reason to do it. A line in a GTI image is several pixels wide, so tracing it can mean different things and the mode is yours to choose. Centreline returns a single line running down the middle of each stroke, which is what a scanned drawing needs: one entity per line, snappable and dimensionable, rather than a long thin rectangle around it. Outline follows both edges and returns closed shapes, which suits clipart, logos and anything that will be filled or cut. A precision setting controls how closely the traced paths follow the pixel edges. One thing to plan for: vectorised output from this path is black and white, so colour in the GTI does not survive as colour in the IGES.

Map Data Workflow

From map data to a working drawing

Converting GTI to IGES 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 IGES 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 13, 2026
An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time.
Roger Cook
Roger Cook
Happy User
For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results.
Jamal Bailey
Jamal Bailey
Satisfied Customer
Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator
An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!
Logan B.
Logan B.
Satisfied Customer
I use the online converter — it’s quick and hassle-free!
Jian Wong
Jian Wong
Happy Online User
Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!
Helen Evans
Helen Evans
Satisfied Customer

FAQ

GTI to IGES Conversion

What are GTI files?

GTI (Raster Tile Index) is a small file that turns a large collection of map or image tiles into one seamless virtual picture. Instead of storing any pixels, it points to the individual raster files, which may be aerial photographs, satellite scenes, or terrain tiles, and describes where each of them lies on the map. A program that opens the GTI file sees one continuous image and loads only the tiles needed for the visible area, which makes it practical to work with archives of thousands of files without merging them first. The format appeared in 2024 and is stored as a short XML file with the .gti extension, or as a tile index in a GeoPackage or FlatGeobuf file.

What are IGES files?

IGES (Initial Graphics Exchange Specification) is a widely used file format for exchanging 2D and 3D CAD data between different design and engineering software. It supports wireframe, surface, and solid models, making it a common standard in mechanical, aerospace, and automotive industries.

Can reaConverter convert GTI to IGES?

Yes! reaConverter instantly converts .gti to .iges 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 images 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 GTI to IGES 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 GTI to IGES online?

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

How can I turn GTI files into IGES on my computer?

The best way to change GTIs to IGESs 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 GTI to IGES.

How can I automate GTI to IGES 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 GTI files to IGES using the command prompt?

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

What else can I do with reaConverter?

Convert RAW photo formatsConvert Gerber filesConvert picture color spaceConvert vector filesChange image DPI

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