Export the files in your ReMarkable cloud account.
Does not yet preserve the metadata associated with each file, just the contents and hierarchy.
Generate a one-time code and insert it in the command below:
node index.js --output=remarkable-backup --code=[a one-time-code]
Please be a good neighbor and avoid DDOSing the ReMarkable infrastructure by creating many large backups in a short time, they can potentially be several gigs in size.