All about I3 Files

The I3 file type is primarily associated with Modula-3.

I3	File extension: I3
	File type:	Interface Source

What is an I3 file?

I3 files mostly belong to Modula-3. Use our "Online I3 Text Viewer" below to analyze your I3 file and to see all text it contains.

How to open an I3 file

You need a suitable software like Modula-3 to open an I3 file. You need a suitable software like Modula-3 to open an I3 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 I3 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a I3 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online I3 Text Viewer

Choose your .i3 file to analyze

or drag and drop it here

Online File Viewer

✈

Read our privacy guarantee in Filext’s terms and privacy policy

Please allow ads on our site

This helps us keep our servers running. Then re-upload your file to view it.

Click here to see how to disable the ad blocker for filext.com

Can't Open Your .I3 File? Try These Steps

Because .I3 files can originate from different programming environments, they aren't universally openable by standard applications.

Identify the Source: If received from a software developer or legacy code repository, it is likely a Modula-3 Interface Source file.
Check the Header: Open the file in a text editor or hex viewer to inspect the first lines.
- Readable text starting with INTERFACE or (* indicates Modula-3 source code.
- "PK" or unreadable symbols suggest a compressed archive or binary file.
Use the Original Software: The original program is usually required; try text editors like Notepad++ or VS Code, or a Modula-3 compiler. Ask the sender if uncertain.
Use this Webpage: Drag and drop your file here to detect its format, extract readable text/metadata, and preview it.

Technical Data for I3 File Extension

Related files:

i3inboundflow, i3pack, i3e, i3m, i3w, i3i, ig, s, is

Mime type:

text/x-modula

an i3 Interface Source is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with I3 files

Associate the I3 file extension with the correct application.
Update your software that should actually open interface sources. Because only the current version supports the latest I3 file format. Search, therefore, e.g. on the manufacturer website after an available Modula-3 update.
To make sure that your I3 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .I3 file online - secure, fast, and no downloads needed.