NITF → IGS · Windows

Convert NITF to IGS

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

Batch NITF to IGS 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. Handles whole folders of tiles and layers in one run, with identical settings on every file.

DownloadNITF to IGS ConverterConvert
NITF to IGS
Online
.nitf.IGS
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .nitf Images to .igs?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting NITF files in under two minutes. reaConverter also includes editing tools: resize, crop, rotate, and more.

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Install reaConverter

2. Load your NITF files

Open reaConverter and import your .nitf 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 NITF 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 NITF to IGS conversion

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

Start Conversion

Conversion complete? Your IGS 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 NITF files into IGS without GIS software - all images processed on your PC for maximum privacy and speed.

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Technical note

Before you convert NITF to IGS

Geospatial coordinates are absolute positions on the earth, and they are large: a projected easting runs to six or seven digits, while latitude and longitude are small decimals. IGS expects a drawing laid out near its own origin in millimetres or inches. The geometry itself converts correctly, but it can land tens of kilometres from 0,0, or arrive at a scale where an entire county is forty units across. Zoom to extents first, then measure one known distance before dimensioning anything. A NITF file has a pixel count and a DPI value, and no real-world size at all. IGS is a drawing where one unit means one millimetre or one inch, so the conversion has to assign a scale. Set the DPI before the run rather than resizing afterwards, then measure one feature of known length in the output and scale the drawing once to match it. Everything downstream, from dimensioning to cutting, rests on that single check.

Map Data Workflow

From map data to a working drawing

Converting NITF 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
An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness.
Elena Anderson
Elena Anderson
Happy User
Enable shell integration for lightning-fast file conversions directly from Windows Explorer.
R. Lewis
R. Lewis
Happy User
After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need.
Walter Morgan
Walter Morgan
Satisfied Customer
We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works.
David R.
David R.
IT Solutions Architect
So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!
Kenneth D. Carter
Kenneth D. Carter
Satisfied Customer
I run a small design agency, and reaConverter has saved me countless hours. The batch processing is lightning-fast, and the ability to convert hundreds of files into different formats at once is a game-changer. Highly recommend!
Mark T.
Mark T.
Satisfied Customer

FAQ

NITF to IGS Conversion

What are NITF files?

NITF (National Imagery Transmission Format) is a file format developed in the United States for exchanging satellite and aerial imagery in a standard way, and it is also used by NATO under the name NSIF. A file of this type works as a package: it can hold one or several images together with vector graphics, labels, symbols, text, and a large amount of descriptive information about the source of the data, such as the sensor, the time, the accuracy, and the security classification. The format was created for secondary imagery from overhead collection platforms, and it became the common language of military and intelligence imagery, and of commercial satellite data. The current version is described in the Joint BIIF Profile. Files may use the .ntf or .nitf extension.

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 NITF to IGS?

Yes! reaConverter instantly converts .nitf 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 NITF 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 NITF 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 NITF to IGS online?

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

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

The best way to change NITFs 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 NITF to IGS.

How can I automate NITF 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 NITF 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 nitf to igs converter for batch processing.

What else can I do with reaConverter?

Convert microscopy filesResize picturesConvert PDFAdd watermark on photoConvert Gerber images

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