Opening NNR Files

The NNR file type is primarily associated with Nikon Capture.

NNR	File extension: NNR
	File type:	Noise Reduction File

What is an NNR file

NNR files mostly belong to Nikon Capture by Nikon Inc. Nikon Capture allows you to make fundamental and subtle adjustments to your Nikon Electronic Format (NEF) files-without compromising the original file's integrity.

How can I open an NNR file?

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

Online NNR Text Viewer

Choose your .nnr file to analyze

or drag and drop it here

Online File Viewer

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.NNR File Not Opening? How to Fix It:

NNR files can come from different programs and aren't universally openable.

Identify the Source: If received from a photographer or digital imaging workflow, it is likely a Noise Reduction File used by Nikon software.
Check the Header: Inspect the first bytes in a text editor or hex viewer:
- Readable XML/JSON suggests a plain-text settings file.
- "PK" indicates a standard ZIP archive.
- Proprietary binary bytes often point to specialized camera tools.
Use the Original Software: The original program is usually required to open the file; try Nikon Capture or Nikon Capture NX, or ask the sender if uncertain.
Use this Webpage: Drag and drop your file here to automatically detect the format, extract readable text or metadata, and preview contents when possible.

Technical Data for NNR File Extension

Program ID:

NikonCapture.NoiseReduction

Related files:

enc, ndr, nid, ndd

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: NikonCapture.NoiseReduction
EXEFile: %ProgramFiles%\Nikon\NCapture4\NCapture.exe

ProgramID: Nikon.CaptureNX.set
EXEFile: %ProgramFiles%\Nikon\Capture NX\Capture NX.exe

an nnr Noise Reduction File is a special file format by Nikon Inc. and should only be edited and saved with the appropriate software.

How to solve problems with NNR files

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