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Check the validity of your TMX documents in any platform with TMXValidator.

Most CAT (Computer Aided Translation) tools rely on TMX (Translation Memory eXchange) standard to exchange translation memory data. Unfortunately, some tools produce files that are not valid and others do not accept TMX documents that are correctly formatted.

TMXValidator checks your documents against TMX DTD and also verifies if they follow the requirements described in TMX specifications.

TMXValidator supports TMX versions 1.1 , 1.2 , 1.3 and 1.4

The source source code of TMXValidator is available in GitHub, at

TMXValidator users can inspect the code to understand why the program complains at an error in a TMX file or to confirm a bug/omission in the validator program.

Installers with a graphical user interface (GUI) are available here. The source source code of the graphical user interface is available in GitHub, at

Release History

  • Version 2.0.2 - August 9, 2019
    • Updated OpenXLIFF to version 1.4.2
    • Updated list of valid language codes
    • Improved UI with Electron update
  • Version 2.0-1 - June 25, 2019
    • Updated OpenXLIFF library.
    • Fixed date validation.
    • Cleaned code.
  • Version 2.0-0 - November 28, 2018
    • New version that supports validation of very large files.
TMXValidator running on Windows
TMXValidator running on Windows 10

Download TMXValidator

TMXValidator Installer
Select the appropriate installer from the drop-down list and click on Download button.


Windows Logo
Microsoft Windows
(8, 8.1 and 10)
Apple Logo
(10.13, 10.14 and 10.15)
Linux Logo
(with GNOME Desktop Manager)

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