SharePoint Framework works perfectly with both SharePoint Online and On-premises. Then again, it is compatible with both classic and modern portals. It is compatible with all the plans
- SharePoint Online and SharePoint Server (on-premises)
- Classic and Modern portal
SharePoint Versions compatibility with SharePoint Framework
| SharePoint Version | SharePoint Framework (SPFx) Version | Features Compatible |
| SharePoint 2013 | Not Supported | Not Supported |
| SharePoint 2016 Feature Pack 2 | v 1.1 | SPFx client-side web parts hosted in classic SharePoint pages. |
| SharePoint Server 2019 | v1.4.1 or lower | SPFx client-side web parts in classic and modern pages, and extensions in modern pages. |
| SharePoint Online | All versions | All features |
Note: SharePoint Framework (SPFx) is not supported for SharePoint 2013.