File Extension Search

.to4 File Extension

Developer: Tobias Svensson
File type: Top 4 compressed data
You're here because you have a file that has a file extension ending in .to4. Files with the file extension .to4 can only be launched by certain applications. It's possible that .to4 files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .to4 file?

The TO4 file extension was developed by Tobias Svensson and this was used to refer to the compressed data files saved using the Top 4 compression software. This is why TO4 files are also known as TO4 compressed data files. These files are categorized as data files and they mainly contain the files, whether they are documents, images, databases, text, etc. as long as they are compressed using Top 4. TO4 files contain all saved files compressed in one archive and they are used to allow users to backup their files to a disk or archive their files so that they can be sent through email in one package. These files can also be split into several smaller files. TO4 files can be opened using Top 4 compression software. This software is a reliable tool used to compress several files into one single and large archive. This compression software is old compression software but it is the main application associated with the TO4 files.

how to open a .to4 file?

Launch a .to4 file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .to4 file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .to4 files aren't yet associated with it. In this case, when you try to open a .to4 file, you can tell Windows which application is the correct one for that file. From then on, opening a  .to4 file will open the correct application. Click here to fix .to4 file association errors

applications that open a .to4 file

Top 4

Top 4

Top 4 is an application generally classified as a file compression and decompression program. Development and support for this software has long been discontinued, but this is the main application that is associated with TO4 files (archives with the .to4 extension). The Top 4 file compression and decompression program can allow users to select files and folders that will be included in an archive which can then be created with this application, and the data compression technology used by this software when saving these archives is the TO4 file format. The content of TO4 archives can also be edited or modified with the Top 4 software, which means users can remove or add new files to these TO4 archives by accessing the corresponding functions that are implemented into the Top 4 file compression and decompression tool.

a word of warning

Be careful not to rename the extension on .to4 files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .to4. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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