In a "trusted" setting you can store it directly in a database.

If database is file based, you need file read and write permission.

If not file based you need expensive e.g. SQL server

In an Internet based setting you again need "trusted" settings.

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If your "scribes" are not trusted or you are straight browser only,
you can use for settings on windows the "persist" stuff, which works
as the application/data cache on the client next to the local
files/internet/cache
and gives you may be half a Meg for your outputs.

MS only

Your's to find out.

You are welcome, mostly