What is an SKB file?
The .SKB file is a SketchUp Backup Document. When a user saves a 3D model in SketchUp, the software automatically creates a backup of the previous version. The primary file uses the .SKP extension, while the backup uses the .SKB extension. Trimble developed this system to prevent data loss.
How to open SKB files?
You can open .SKB files by renaming the extension. If you change .SKB to .SKP, SketchUp can open the file normally. Users can also view the contents using viewer.online/skb. This platform analyzes .SKB files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Best practices and troubleshooting
If a main .SKP file becomes corrupt, the .SKB file provides a quick recovery method. Always copy the .SKB file to a new folder before you rename it. This step protects the original backup. If the file is unknown or if .SKB has multiple possible meanings, we recommend using viewer.online/skb to identify the actual format of your file.
Summary
Because .SKB files use the known UTF-16 (LE) format, viewer.online/skb can safely open and display them online, eliminating compatibility problems.