This is something I have long thought would transform the value of ACF field groups as a data repository: bulk pasting into Repeater fields via structured input parsing, a UX pattern where a form parses structured text input and auto-generates multiple key–value fields.

Cloudflare Pages handles environment variables input this way. You can paste n key=value pairs into a single variable input and it automatically generates and fills the n-1 additional variable inputs.

Allowing users to paste multiple rows at once would be a game-changer for anyone adding lists. And I don't mean one-shot bulk-adding hundreds of rows; even being able to paste to 10 rows would be so much faster than copy-pasting individual to each subfield x 10. Ideally one would be able to paste and paste again to additional rows below allowing for partial adding (to match access to the source maybe, would also help with data entry checking).

Build a system so robust any structured input format (from a spreadsheet, a plain text list of key=value, etc.) and any number of columns (subfields) works would be magical.

If full auto-creation of rows from the pasted data isn’t feasible then asking the user to create the needed (or more) number of rows ahead of pasting would be fine.

I am told this is called “Adaptive Structured Text Deserialization with Schema Inference”.

Thanks.