SDL File Extension

SDL file icon
Corel Paradox Script Format

What is SDL file?

SDL is a file extension commonly associated with Corel Paradox Script Format files. SDL files are supported by software applications available for devices running Windows. SDL file format, along with 350 other file formats, belongs to the Database Files category. The most popular program for handling SDL files is WordPerfect Office, but users can choose among 1 different programs that support this file format. WordPerfect Office software was developed by Corel Corporation, and on its official website you may find more information about SDL files or the WordPerfect Office software program.

Programs which support SDL file extension

Below is a table that list programs that support SDL files. Files with SDL suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support SDL file

How to open file with SDL extension?

There can be multiple causes why you have problems with opening SDL files on given system. On the bright side, the most encountered issues pertaining to Corel Paradox Script Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with SDL files.

Step 1. Install WordPerfect Office software

The main and most frequent cause precluding users form opening SDL files is that no program that can handle SDL files is installed on user’s system. This issue can be addressed by downloading and installing WordPerfect Office or different compatible program, such as Paradox. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. If you want to download WordPerfect Office installer in the most secured manner, we suggest you visit Corel Corporation website and download from their official repositories.

Step 2. Update WordPerfect Office to the latest version

If you already have WordPerfect Office installed on your systems and SDL 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. This can be one of the causes why SDL files are not compatible with WordPerfect Office. The most recent version of WordPerfect Office is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate Corel Paradox Script Format files with WordPerfect Office

If you have the latest version of WordPerfect Office installed and the problem persists, select it as the default program to be used to manage SDL on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Change the default application in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the SDL file
  • Click Choose another app and then select More apps option
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the WordPerfect Office installation folder. Confirm by checking Always use this app to open SDL files box and clicking OK button.

Change the default application in Mac OS

  • From the drop-down menu, accessed by clicking the file with SDL extension, select Information
  • Open the Open with section by clicking its name
  • Select WordPerfect Office and click Change for all...
  • If you followed the previous steps a message should appear: This change will be applied to all files with SDL extension. Next, click the Continue button to finalize the process.

Step 4. Check the SDL for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper SDL file. Being unable to access the file can be related to various issues.

1. The SDL may be infected with malware – make sure to scan it with an antivirus tool.

If the SDL is indeed infected, it is possible that the malware is blocking it from opening. Scan the SDL file as well as your computer for malware or viruses. If the scanner detected that the SDL file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Verify that the SDL file’s structure is intact

If you obtained the problematic SDL file from a third party, ask them to supply you with another copy. 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 SDL extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Sometimes in order to access files user need to have administrative privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the Corel Paradox Script Format file.

4. Make sure that the system has sufficient resources to run WordPerfect Office

The operating systems may note enough free resources to run the application that support SDL files. Close all running programs and try opening the SDL file.

5. Ensure that you have the latest drivers and system updates and patches installed

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Corel Paradox Script Format files. It may be the case that the SDL files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the SDL 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 SDL file.

Top File Extensions
Show more
File Extension of the day
arw icon


Sony Digital Camera Image

The ARW files are photo files created with Sony digital cameras, usually the of the Alpha series. These are raw files which contain unprocessed im...