SUN File Extension

What is SUN file?

SUN is a file extension commonly associated with Sun Raster Graphic Format files. Sun Raster Graphic Format specification was created by Sun Microsystems. SUN file format is compatible with software that can be installed on Linux, Mac OS, Windows system platform. SUN file belongs to the Raster Image Files category just like 522 other filename extensions listed in our database. Users are advised to use XnView software for managing SUN files, although 8 other programs can also handle this type of file. On the official website of Pierre-Emmanuel Gougelet developer not only will you find detailed information about theXnView software, but also about SUN and other supported file formats.

Programs which support SUN file extension

The following list contains programs grouped by 3 operating systems that support SUN files. SUN files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

How to open file with SUN extension?

There can be multiple causes why you have problems with opening SUN files on given system. What is important, all common issues related to files with SUN extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The list below will guide you through the process of addressing the encountered problem.

Step 1. Get the XnView

The most common reason for such problems is the lack of proper applications that supports SUN files installed on the system. This one is an easy one. Select XnView or one of the recommended programs (for example, GIMP, IrfanView, PMView Pro) and download it from appropriate source and install on your system. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. The safest method of downloading XnView installed is by going to developer’s website (Pierre-Emmanuel Gougelet) and downloading the software using provided links.

Step 2. Verify the you have the latest version of XnView

If you already have XnView installed on your systems and SUN files are still not opened properly, check if you have the latest version of the software. Software developers may implement support for more modern file formats in updated versions of their products. If you have an older version of XnView installed, it may not support SUN format. The latest version of XnView should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open SUN files to XnView

After installing XnView (the most recent version) make sure that it is set as the default application to open SUN files. The next step should pose no problems. The procedure is straightforward and largely system-independent

Change the default application in Windows

• Clicking the SUN with right mouse button will bring a menu from which you should select the Open with option
• Click Choose another app and then select More apps option
• The last step is to select Look for another app on this PC option supply the directory path to the folder where XnView is installed. Now all that is left is to confirm your choice by selecting Always use this app to open SUN files and clicking OK.

Change the default application in Mac OS

• Right-click the SUN file and select Information
• Open the Open with section by clicking its name
• Select XnView and click Change for all...
• A message window should appear informing that This change will be applied to all files with SUN extension. By clicking Continue you confirm your selection.

Step 4. Verify that the SUN is not faulty

Should the problem still occur after following steps 1-3, check if the SUN file is valid. It is probable that the file is corrupted and thus cannot be accessed.

1. Check the SUN file for viruses or malware

If the SUN is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. SUN file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with SUN extension is complete and error-free

Did you receive the SUN file in question from a different person? Ask him/her to send it one more time. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with SUN extension was interrupted and the file data is defective. Download the file again from the same source.

3. Ensure that you have appropriate access rights

Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the Sun Raster Graphic Format file again.

4. Check whether your system can handle XnView

If the systems has insufficient resources to open SUN files, try closing all currently running applications and try again.

5. Verify that your operating system and drivers are up to date

Latest versions of programs and drivers may help you solve problems with Sun Raster Graphic Format files and ensure security of your device and operating system. It is possible that one of the available system or driver updates may solve the problems with SUN files affecting older versions of given software.

Do you want to help?

If you have additional information about the SUN file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on SUN file.