Opening a DRR File

The DRR file type is primarily associated with Altium Designer.

DRR	File extension: DRR
	File type:	report file

What is a DRR file

DRR files mostly belong to Altium Designer. Your DRR file is a report file that holds PCB drill information.
It is used by PCB design software, mainly Altium Designer, to list NC drill instructions. The file details drill coordinates, hole sizes, and other key data needed for the manufacturing process.
Key details provided by FilExt.com include:

Drill Data: Contains coordinates and sizes for PCB holes.

NC Guidance: Acts as a numerical control drill file for automated machines.

Altium Designer Usage: Most versions of this file come from Altium Designer. (Altium Web Page)

These files are plain text and can be opened with basic text editors or the native design software.
FilExt.com note: Few users know that manual inspection of a DRR file can help diagnose drill misalignment issues before board production.

How to open DRR files

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

Online DRR Text Viewer

Choose your .drr file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert DRR files:

Altium Designer
See the previous paragraphs to learn more about the main application. DRR files are often referred to as Altium Designer data files because this type of file is primarily created or used by this software.
Altium Designer
A DRR (Drill Rack Report) file is a report generated by printed circuit board (PCB) design software during the manufacturing process. It details the locations and sizes of all the drill holes required for the PCB. This information is crucial for automated drilling machines to accurately manufacture the board. The DRR file typically includes data such as drill hole coordinates, diameters, and plating requirements. It serves as a bridge between the PCB design and the manufacturing process, ensuring accurate and efficient production. This file format is classified as CAD/CAM.

Technical Data for DRR File Extension

File classification:

Data

Related files:

drl, nc, prn, ddr, extrep, ldp, his, dpr, txt, pcb, prjpcb, schdoc, csv

Mime type:

text/plain

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: NCDrillFileReport
EXEFile: %ProgramFiles%\Dxp.exe

a drr report file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with DRR files

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