Global Copy Nodes creates a global copy buffer for nodes that works across different sessions and even different instances of Blender. It removes the need to save node data manually, since a simple copy and paste handles the transfer. The add-on does not rely on Blender's internal copy buffer, and it keeps references to data-blocks so there is no data loss.
Preferences control how the buffer behaves. A Custom Copy Path option, off by default, lets you set a directory for the global copy buffer and copy across different Blender versions. Automatic Link To Scene, on by default, links attached objects or collections to the active scene; when disabled, they stay hidden until manually linked. A related option creates a default collection to nest attached objects, or uses the scene collection instead. Copy to Internal Buffer, on by default, writes nodes to both the internal and global buffers.
The add-on adds two operators: Global Copy Nodes on Ctrl+Shift+C and Global Paste Nodes on Ctrl+Shift+V by default. It requires reading and writing the node copy buffer to disk. Compatible with Blender 4.2 LTS and newer.