A daily updated filename extension database!

DRU file extension

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

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

✅ EAGLE Design Rules File

DRU file is an EAGLE Design Rules File. EAGLE is a flexible, expandable and scriptable EDA application with schematic capture editor, PCB layout editor, auto-router and CAM and BOM tools.
DRU format description not yet available
Category: Data files
Application: EAGLE
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
DRU aliases:
DRU related links:
DRU related extensions:
EAGLE User Language Program


EAGLE Schematic File

EAGLE Library File

EAGLE Inner Signal Layer GERBER Data

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

🚫 The .dru file extension is often given incorrectly!

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

cru, ddu, deu, dfu, dgu, dr, drh, dri, drj, drk, dry, dur, fru, ru, sru

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

iOS Device Firmware Upgrade File
DFUWizard Firmware Image
Parallels Desktop Hard Disk Info
Crush Compressed Archive
Commodore Amiga Multi-palette Image
DURILCA Compressed Archive
MAP dlms User Association Document
Excellion Drill File
Adobe Acrobat Reader German Language Data

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

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