.1ST File Extension

.1ST File Extension

File Type

Readme File

Developer N/A
Popularity
3.6  |  91 Votes
Category Text Files
Format Text

What is a 1ST file?

Readme text file sometimes bundled with applications; contains important information or instructions for operating the software; uses the "1st" extension so that users know to open the readme first before running the application for the first time.

More Information

1ST files are not as commonly used as the filenames README or readme.txt.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open 1ST files

Windows
Included with OS
Updated October 17, 2011

Verified by FileInfo.com

The FileInfo.com team has independently researched the Readme file format and Windows apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.