GTM Converter

Convert GTM files fast and easy with reaConverter - batch process all your files at once with just a few clicks.

GTMConverter

How to Convert .gtm Files in Bulk

1. Install reaConverter

Download reliable GTM conversion software to convert multiple .gtm files and folders in one go.

2. Select GTM Files

Select GTMs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load GTM files

3. Start Conversion

Click Convert to start the bulk conversion of all selected GTM files. The process will begin right away.
reaConverter - Start GTM conversion

Convert GTM on your PC

For quick and effortless GTM file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

Do more with your files

Converting GTM files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Image editing

User Reviews

Average User Rating:
Last updated on August 26, 2025
"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
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
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
"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"
Henry R.
Henry R.
Happy User
"Exactly what I needed! Simple, fast, and no bloat. I use reaConverter Lite to resize and convert batches of images for documents. The presets make it super easy, and everything works smoothly."
Mark Jones
Mark Jones
Happy User

GTM files: Frequently Asked Questions

Can reaConverter open GTM files?

reaConverter fully supports the GTM file format – open, edit, and export GTM files to any other popular file format with ease.

How do I change GTM to another format?

reaConverter is a user-friendly tool for converting GTM files. Once installed on your computer, it allows you to convert all your .gtm files at once with just a few clicks. You can even convert gtm images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert GTM online?

If you only want to convert a few GTM files, you are welcome to try our free online GTM converter.

How can I turn GTM files on my computer to another format?

The best way to convert GTM files on your PC is to get 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.

How can I automate GTM files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert GTM files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line gtm converter.

What else can I do with reaConverter?

Set file dateConvert PDFAdd text on picturesConvert GIS filesConvert CAD formats

What formats can I convert a GTM file to?

Discover more

Explore our efficient GTM file converter that saves you time and effort by converting multiple .gtm files into different formats.
reaConverter software