since 2000
Opening a 1ST File
The 1ST file type is primarily associated with Information.
What is a 1ST file
1ST files mostly belong to Information. e.g., README.1ST (usually an ASCII text file). Open with any text editor.
How to open 1ST files
You need a suitable software like Information to open a 1ST file. You need a suitable software like Information to open a 1ST 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 1ST file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a 1ST file directly in the browser:. Just drag the file onto this browser window and drop it.
Online 1ST Text Viewer
or drag and drop it here
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.1ST File Won't Open? Here is What You Can Do
Because .1ST files originate from various programs, they aren't universally openable.
- Identify the Source: These often come from software installers or older PC games as "README.1ST" documentation, suggesting plain text.
- Check the Header: Inspect the first lines in a text editor or hex viewer:
- Readable ASCII text confirms it's a standard plain text document.
- "PK" indicates a renamed ZIP archive.
- Garbled symbols suggest a proprietary binary format.
- Use the Original Software: The original program is usually required; try opening it with Notepad, Apple TextEdit, the software it was bundled with, or ask the sender.
- Use this Webpage: Drag and drop your file into our viewer to detect the format, extract readable text, and preview contents when possible.
Technical Data for 1ST File Extension
File classification:
Text
Mime type:
text/plain, application/text
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: Object.Edit.1ST
EXEFile: Y:\Object Desktop\Object Edit\oe.exe %1
EXEFile: Y:\Object Desktop\Object Edit\oe.exe %1
ProgramID: tsm1st
EXEFile: %SystemRoot%\system32\NOTEPAD.EXE %1
EXEFile: %SystemRoot%\system32\NOTEPAD.EXE %1
a 1st Information file is a special file format and should only be edited and saved with the appropriate software.
How to solve problems with 1ST files
- Associate the 1ST file extension with the correct application.
- Update your software that should actually open Information files. Because only the current version supports the latest 1ST file format. Search, therefore, e.g. on the manufacturer website after an available Information update.
- To make sure that your 1ST file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .1ST file online - secure, fast, and no downloads needed.