All about TNA Files

The TNA file type is primarily associated with Topocad.

TNA	File extension: TNA
	File type:	Topocad files

What is a TNA file?

TNA files mostly belong to Topocad by Chaos Systems AB. Topocad is a CAD system developed for surveying calculations, COGO, transformation and for mapping, design and GIS connectivity.

How to open TNA files

You need a suitable software like Topocad to open a TNA file. You need a suitable software like Topocad from Chaos Systems AB to open a TNA file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your TNA file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a TNA file directly in the browser:. Just drag the file onto this browser window and drop it.

Online TNA Text Viewer

Choose your .tna file to analyze

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Online File Viewer

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4 Steps to Open an Unknown .TNA File

Since .TNA files come from various programs, they aren't universally openable.

Identify the Source: Files received from surveyors suggest CAD workflows, while files found on digital cameras may be image thumbnails.
Check the Header: Inspect the first bytes in a text editor or hex viewer:
- Readable XML/JSON suggests structured data.
- "PK" indicates a ZIP archive.
- Binary data often implies a proprietary CAD format.
Use the Original Software: The original program is usually required; try Topocad by Chaos Systems AB, an image viewer, or ask the sender if you are uncertain.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text or metadata, and preview it when possible.

Technical Data for TNA File Extension

File classification:

CAD/CAM

Related files:

pxy, trl, tsy

a tna Topocad file is a special file format by Chaos Systems AB and should only be edited and saved with the appropriate software.

How to solve problems with TNA files

Associate the TNA file extension with the correct application.
Update your software that should actually open Topocad files. Because only the current version supports the latest TNA file format. Search, therefore, e.g. on the Chaos Systems AB manufacturer website after an available Topocad update.
To make sure that your TNA file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .TNA file online - secure, fast, and no downloads needed.