# fiftyone.utils.aws Utilities for working with `Amazon Web Services `. Copyright 2017-2026, Voxel51, Inc.
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**Functions:** | [`download_public_s3_files`](#fiftyone.utils.aws.download_public_s3_files)(urls[, ...]) | Download files from a public AWS S3 bucket using unsigned URLs. | |-------------------------------------------------------------------------------------------|-------------------------------------------------------------------| ### fiftyone.utils.aws.download_public_s3_files(urls, download_dir=None, num_workers=None, overwrite=True) Download files from a public AWS S3 bucket using unsigned URLs. The `url` argument either accepts: > - A list of paths to objects in the s3 bucket: > ```default > urls = ["s3://bucket_name/dir1/file1.ext", ...] > ``` > When `urls` is a list, then the `download_dir` argument is required > and all objects will be downloaded into that directory > - A dictionary mapping the paths of objects to files on disk to store > each object: > ```default > urls = { > "s3://bucket_name/dir1/file1.ext": "/path/to/local/file1.ext", > ... > } > ``` * **Parameters:** * **urls** – either a list of URLs to objects in an s3 bucket, or a dict mapping these URLs to locations on disk. If `urls` is a list, then the `download_dir` argument is required * **download_dir** (*None*) – the directory to store all downloaded objects. This is only used if `urls` is a list * **num_workers** (*None*) – a suggested number of threads to use when downloading files * **overwrite** (*True*) – whether to overwrite existing files