I think you could encode a “shelf” last-write-wins CRDT into your HTML using data attributes without exploding your file size. You would need to add a data-vers

I think you could encode a “shelf” last-write-wins CRDT into your HTML using data attributes without exploding your file size. You would need to add a data-version attribute, and if you want to support hand-editing or editing by programs that don’t understand the CRDT, a CRC32 or other parity as data-parity so your loader can tell when a user might have edited a row without updating data-version. Shelf is really simple - the JS implementation is tiny (https://github.com/dglittle/shelf https://github.com/dglittle/shelf) and a walkthrough of the algorithm here is a quick read: https://bartoszsypytkowski.com/shelf-crdt/amp/ https://bartoszsypytkowski.com/shelf-crdt/amp/ It wouldn’t handle character level sync - but would let you merge documents at a rows/items/blocks level.