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Working with Extensions

Downloading Extensions Directly from S3

Downloading an extension directly could be helpful when building a lambda or container that uses DuckDB. DuckDB extensions are stored in public S3 buckets, but the directory structure of those buckets is not searchable. As a result, a direct URL to the file must be used. To directly download an extension file, use the following format:

http://extensions.duckdb.org/v{release_version_number}/{platform_name}/{extension_name}.duckdb_extension.gz

For example:

http://extensions.duckdb.org/v1.1.3/windows_amd64/json.duckdb_extension.gz

The list of supported platforms may increase over time, but the current list of platforms includes:

See above for a list of extension names and how to pull the latest list of extensions.

Loading an Extension from Local Storage

Extensions are stored in gzip format, so they must be unzipped prior to use. There are many methods to decompress gzip. Here is a Python example:

import gzip
import shutil

with gzip.open('httpfs.duckdb_extension.gz','rb') as f_in:
   with open('httpfs.duckdb_extension', 'wb') as f_out:
     shutil.copyfileobj(f_in, f_out)

After unzipping, the install and load commands can be used with the path to the .duckdb_extension file. For example, if the file was unzipped into the same directory as where DuckDB is being executed:

INSTALL 'httpfs.duckdb_extension';
LOAD 'httpfs.duckdb_extension';
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