Yes we do! DuckDB-Wasm can read files using HTTP range requests very similar to the sql.js-httpvfs from phiresky.

The blog post contains a few examples how this can be used, for example, to partially query Parquet files over the network.

E.g. just visit shell.duckdb.org and enter:

select * from 'https://shell.duckdb.org/data/tpch/0_01/parquet/orders.parqu...' limit 10;