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DIFF file extension

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

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

✅ Diff Output

DIFF file is a Diff Output. Diff is a file comparison utility that outputs the differences between two files on Unix systems.
Category: Other files
Application: GNU Diff
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
DIFF aliases:
DIFF related links:
DIFF related extensions:
Patch Reject File

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

🚫 The .diff file extension is often given incorrectly!

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

ciff, dff, dif, fiff, iff, riff, siff, viff, wiff

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Canon Raw Image
Scene Interchange File Format Data
RenderWare 3D Model
Direct Stream Digital Interchange File Format Data
Resource Interchange File Format
Autodesk Maya Image File
Data Interchange Format
ProWorx NXT Data Interchange File
Commodore Amiga Interchange File Format Bitmap
SmartWare Temporary Merge Data

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

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