All about THN Files

The THN file type is primarily associated with TurboCAD.

THN	File extension: THN
	File type:	thumbnail image file

What is a THN file?

THN files mostly belong to TurboCAD. Your THN file is most often a TurboCAD Thumbnail Image file.
Purpose and functionality:
This file type is used to store a small preview image of a CAD drawing. It lets you quickly view the content of a design without opening a large, detailed file.
Some THN files contain Lua script code, used in game development with the BioWare Aurora Engine.
Key details as outlined by FilExt.com include:

Designed for fast browsing of CAD projects (commonly in TurboCAD and related software).

Provides a visual snapshot of larger design files.

On occasion, repurposed as a Lua script container for certain game engines.

FilExt.com tip: Learn more about TurboCAD files at Cerious Productions and Lua scripting at Lua.org.

How to open THN files

You need a suitable software like TurboCAD to open a THN 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 THN file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a THN file directly in the browser:. Just drag the file onto this browser window and drop it.

Online THN Text Viewer

Choose your .thn file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert THN files:

TurboCAD
See the previous paragraphs to learn more about the main application. THN files are often referred to as TurboCAD raster images because this type of file is primarily created or used by this software.
GIF Construction Set (Construction Data) by Alchemy Mindworks
Holds the information for timing and loops in animated GIF files you create.
Graphics Workshop for Windows (Thumbnail) by Alchemy Mindworks
Graphic Workshop Professional is an image management package for Windows, and a digital darkroom. It features support for over 50 graphic formats; multiple browser windows; batch processing and conversion; thumbnails; a library of image filters and more. The identifying characters used for this association are - Hex: 54 48 4E 4C, ASCII: THNL. This file format is classified as Graphic.

THN file format:

To view or edit THN files you need to know the file format, because it determines how the data in this file is stored. A file format is determined by the file extension and signature, so JPEG images have the extension .jpg and the first bytes in the file are ÿØÿ. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our evaluation of the THN files looks like this:

THN is seldom used as a file extension and covers different formats for different programs. However, the following two file formats are common:

65% of all THN files are associated with Graphics Workshop for Windows Thumbnail. The contents of these files cannot be read by a human; only a computer program can interpret the data. The average file size is 9 KB with most files being between 9 KB and 27 KB in size. The file type was primarily used more than 20 years ago. Certain words are almost always found in the files, such as THNL. Such files are related to longster, and often include person-related information.
15% of all THN files have the same signature 1B 4C 75 61 32 00 00 00. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The files are 1 KB to 6 KB in size, with a median of 2 KB. The following keywords are characteristic: Lua2.

All other THN files (20%) have no uniform format. They are often associated with epub. Just click the "Choose your .thn file to analyze" button on this page to find out what your THN file is.

Technical Data for THN File Extension

File classification:

Raster Image

Identifier:

Hex: 54 48 4E 4C, ASCII: THNL (provided by TrID database)

Related files:

lua, thm, jpg, txt, thnl, skf, png, bmp, gif, tif

Mime type:

audio/x-mod

a thn thumbnail image file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with THN files

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