SLDX File Extension
Microsoft PowerPoint 2007/2010 Open XML Slide
- File Type sldx
- Developer Microsoft Corporation
- Popularity
- Application Microsoft PowerPoint
- Category Data Files
What is a SLDX file?
Microsoft PowerPoint 2007/2010 Open XML Slide, identified by the SLDX extension, is a Data Files type and includes 6196 files.
With the creation of the Microsoft PowerPoint 2007/2010 Open XML Slide (SLDX), Microsoft introduced file format along with 242 programs built for their use.
SLDX files are supported by Mac OS and Windows. You can open a SLDX file using one of 2 programs, for example Microsoft PowerPoint and Microsoft Office.
MIME types
- application/vnd.openxmlformats-officedocument.presentationml.slide
Programs that support SLDX files
How to open a SLDX file?
The most common reason why a SLDX file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
The most popular programs for working with SLDX files are Microsoft PowerPoint and Microsoft Office. To get the latest version of Microsoft PowerPoint, open the Microsoft website where a universal installer for all operating systems is available.
Once setup is done, your operating system should assign Microsoft PowerPoint as the default app for SLDX files.
Make Microsoft PowerPoint the default SLDX viewer
Changing the default program in Windows
- Start by right-clicking on your SLDX file and selecting the "Open With" option. From there, click "Choose another app" to continue;
- Inside the popup window, scroll through the list of applications and specifically choose Microsoft PowerPoint as the application to associate with your SLDX file;
- Check the "Always use this app" checkbox and click "OK".
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired SLDX file to access a dropdown menu of actions;
- Select "Open in application" and click "Other";
- Scroll down to the bottom of the window, where you will find the "Enable" menu. Default, "Recommended Programs" will be selected;
- In this menu, choose "All Programs" and navigate to Microsoft PowerPoint. Check the box next to "Always open in app" to make it the default program.
How to edit a SLDX file?
To edit SLDX files, you need to install specialized software that allows you not only to open but also to modify data files. Online SLDX editors usually provide fewer features than software created specifically for Microsoft PowerPoint 2007/2010 Open XML Slide.
List of Top SLDX editors 2026
Following these criteria, we have put together a list of recommended SLDX editors.
| SLDX Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft PowerPoint | Microsoft | Windows, Mac OS, Android, Apple iOS | 4.4 out of 5 (40 reviews) |
Finding answers to SLDX file problems
If you encounter issues with SLDX files, don’t worry—most can be fixed with minor software adjustments. Refer to the troubleshooting tips below.
What are the signs that my SLDX file is damaged?
Corrupted SLDX data files may have one or more of the following symptoms:
- Poor performance when editing a file in Microsoft PowerPoint;
- Opening or processing the file in Microsoft PowerPoint or other programs causes instability or crashes in the program;
- The file shows errors when trying to open it or does not open completely;
- Unexpected expansion of the total size of the SLDX file;
- Working with the file triggers the display of error messages;
Why does Microsoft PowerPoint quit or crash unexpectedly?
Microsoft PowerPoint crashes can be attributed to outdated software. Make sure you have installed the latest updates for Microsoft products.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.
What methods can be used to repair a damaged SLDX file?
Use a recovery program to open the damaged SLDX file and navigate to the "Repair" menu item. Wait for the recovery process to finish, as it will automatically repair damaged data files.