A daily updated filename extension database!

ST1 file extension

The table below provides useful information about the .st1 file extension. It answers questions such as:

  • What is the .st1 file?
  • What program do I need to open a .st1 file?
  • How can the .st1 file be opened, edited or printed?
  • How can I convert .st1 files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ DigiTitle Master Subtitle

ST1 file is a DigiTitle Master Subtitle. DigiTitle Master is an off-line preparation systems to on-air automatic subtitling systems.
ST1 format description not yet available
Category: Document files
Application: DigiTitle Master
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
ST1 aliases:
ST1 related links:
ST1 related extensions:

Other types of files may also use the .st1 file extension.

🚫 The .st1 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

et1, s1, sf1, sg1, sr1, st, stl, stq, stw, sy1, t1, ts1, wt1, zt1

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

ENERGY-10 Weather Data
Freescale S-record File
StarOffice Writer Template
Macromedia Fireworks Style Library
Census Bureau Summary File 1
Male MRI Image
Neopaint for Windows Stamp
StereoLithography Data
Stanford Graphics Image
WordExpress Document Template

🔴 Can't open a .st1 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .st1 file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .st1 file extension, write to us!

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