[nisten]

I had not looked into RxDB before thank you. By any chance you know how much their Premium plugin with IndexedDB support costs, their price is not listed.

[postcoroner]

You could use the dexie.js based storage [1] as a start. It is fast enough for most use cases and comes for free.

[1] https://rxdb.info/rx-storage-dexie.html

[nisten]

It looks like dexie supports svelte, this is pretty awesome thank you. https://dexie.org/docs/Tutorial/Svelte