This website uses cookies to improve your experience. You consent to our cookies if you continue to use this website. I Agree Read more
>> 1ST file

1ST file format description

Many people share .1st files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .1st file can be edited, converted or printed with. On this page, we try to provide assistance for handling .1st files.

1 filename extension(s) found in our database.

.me - Readme Text

ME file is a Readme Text. The readme file is a simple text file. (, readme.txt, readme.1st,, etc.)

.me file format description:
ME format
Document files
- / -
1st, eng, ger, jpn, moi, rls
Readme Text related links:
Readme Text related extensions:
NASA Ames Data Exchange
Nimbus 7 SAMS APRIORI Data
Microsoft Exchange Non-Delivery Report Message
BBS Directory List
Microsoft Exchange Non-Delivery Report Bad Mail Pointer
Microsoft Exchange Non-Delivery Report Body

Naturally, other applications may also use the .1st file extension. Even harmful programs can create .1st files. Be especially cautious with .1st files coming from an unknown source!

Can't open a .1st 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 can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .1st file extension is often given incorrectly!

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

lst, wst, qst, st

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

General List File
Atari ST Standard Floppy Disk Image
Adobe Font List
Neopaint Stamp
GCC Assembler Listing File
WinSSHD Settings

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .1st file format, then write to us!