Client APIs
Fetching DuckDB-Wasm Extensions
Official DuckDB extensions are served at `extensions.duckdb.org`, and this is also the default value for the `default_extension_repository` option.
When installing extensions, a relevant URL will be built that will look like `extensions.duckdb.org/$duckdb_version_hash/$duckdb_platform/$name.duckdb_extension.gz`.  
DuckDB-Wasm extension are fetched only on load, and the URL will look like: `extensions.duckdb.org/duckdb-wasm/$duckdb_version_hash/$duckdb_platform/$name.duckdb_extension.wasm`.  
Note that an additional `duckdb-wasm` is added to the folder structure, and the file is served as a `.wasm` file.  
DuckDB-Wasm extensions are served pre-compressed using Brotli compression. While fetched from a browser, extensions will be transparently uncompressed. If you want to fetch the `duckdb-wasm` extension manually, you can use `curl --compress extensions.duckdb.org/<...>/icu.duckdb_extension.wasm`.