How would you make a KNIME workflow portable?

Relative paths — the readers offer relative-to-workflow and relative-to-workflow-data-area options. Absolute paths like C:\Users\yourname\ are the commonest reason a workflow fails immediately for someone else.

Flow variables for anything that might change between runs — file paths, dates, thresholds — so they can be set without editing nodes.

Reset before exporting, which strips cached data. That shrinks the file considerably and avoids sending data you did not intend to share.

And name the nodes and annotate the sections, since in a visual tool the layout is the documentation.