Opening a TEF File

The TEF file type is primarily associated with Relisys Tefax Fax.

TEF	File extension: TEF
	File type:	Relisys Tefax Fax files

What is a TEF file?

TEF files mostly belong to Relisys Tefax Fax. Use our "Online TEF Text Viewer" below to analyze your TEF file and to see all text it contains.

How to open a TEF file

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

Online TEF Text Viewer

Choose your .tef file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert TEF files:

Relisys Tefax Fax
See the previous paragraphs to learn more about the main application.
TablEdit
TablEdit is a program for creating, editing, printing and listening to tablature and sheet music (standard notation) for guitar and other fretted, stringed instruments.

TEF file extension format:

To find out what program is needed to open TEF files, you need to determine the file format. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. If there are problems opening a file, you must first determine the file format used. Our examination of the TEF files comes to the following conclusion:

The TEF file extension is rather rarely used and does not have a uniform file format. The following file formats are most commonly found in TEF files:

6% of all TEF files start with the bytes 00 00, which are crucial for this file format. If you open these files in a text editor, you will see only illegible characters. The average file size is 4 KB with most files being between 1 KB and 13 KB in size. The following keywords are characteristic: tbed.
6% of all TEF files internally use the ZIP format, so several files are combined and compressed into one TEF file. TEF files contain from 1 to 39 compressed files. File names are e.g. 1.jpg, 1.mp3, End.mp3, Paper.ini, Start.mp3, Title1202-JL-1.mp3, Title1202-JL.mp3, Title1203-JL.mp3, Title1205-JL.mp3, Title1226-JL.mp3, Title1400-JL.mp3, Title1438-JL.mp3, Title1636-JL.mp3, Title1717-JL.mp3, ling.mp3 and test.json. You can see the included files and images by renaming the file extension to .zip and then double-clicking it. Most of these files are 53 KB to 5 MB in size.

All other TEF files (88%) have no consistent format. Sometimes used for grisman, guitar, blues, dixie, snow, tefx or trad. You can get all the details of your TEF file by dragging it onto this page or by clicking the button "Choose your .tef file to analyze" above.

Technical Data for TEF File Extension

Related files:

downloader, tel

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: tabledit
EXEFile: %ProgramFiles%\TablEdit\Tabledit.exe

ProgramID: tabledit
EXEFile: %ProgramFiles%\TablEdit\TEFView.exe

ProgramID: Harmony_Assistant_File
EXEFile: %ProgramFiles%\Harmony Assistant\harmony.exe

a tef Relisys Tefax Fax file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with TEF files

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