A daily updated filename extension database!

SU3 file extension

The table below provides useful information about the .su3 file extension. It answers questions such as:

  • What is the .su3 file?
  • What program do I need to open a .su3 file?
  • How can the .su3 file be opened, edited or printed?
  • How can I convert .su3 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

✅ I2P Software Update File

SU3 file is a I2P Software Update File. I2P is an anonymous overlay network, a network within a network.
SU3 format description not yet available
Category: Data files
Application: I2P
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
SU3 aliases:
su2, sud
SU3 related links:
SU3 related extensions:

Other types of files may also use the .su3 file extension.

🚫 The .su3 file extension is often given incorrectly!

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

cu3, eu3, qu3, s3, sh3, si3, su, sur, sy3

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

PhotoLine 4 Curve Data
Harvard Graphics Symbol
Europa Universalis III Saved Game
QuoVadis Database
Harvard Graphics 3.0 Show Presentation
Freescale S-record File
ChessDB Index Data
SUwin Project
Topocad Survey Data

🔴 Can't open a .su3 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 .su3 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 .su3 file extension, write to us!

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