I understand you're looking for a free plugin pack for SketchUp 2021. However, I need to provide some important guidance:
What are SketchUp Plugins?
Note: If the plugin is a .rb folder (legacy), copy it to C:\Users\[YourName]\AppData\Roaming\SketchUp\SketchUp 2021\SketchUp\Plugins.
- Fredo6 released legacy patches for LibFredo6 v13.2 that work on SU2021.
- ThomThom updated CleanUp³ to v5.0 with a legacy installer for SU2021.
- New free pack aggregator – A user named "Dave R" on SketchUp Community compiled a sticky thread titled "The Definitive Free Plugin Pack for SU2021 (UPD Jan 2026)". This includes direct links to all working versions.
- Go to
C:\Users\[YourName]\AppData\Local\SketchUp\SketchUp 2021\SketchUp\Plugins - Delete the folder named "Generated Report".
- Restart SketchUp. This fixes 99% of update conflicts.