---
id: s3transfer
version: "0.19.2"
license: Apache License 2.0
license_treatment: permissive
maintenance: active
---

# s3transfer — An Amazon S3 Transfer Manager

License: permissive · Maintenance: active · Popularity: top 100 on PyPI

## Install

pip install s3transfer
uv add s3transfer
poetry add s3transfer

## Description

=====================================================
s3transfer - An Amazon S3 Transfer Manager for Python
=====================================================

S3transfer is a Python library for managing Amazon S3 transfers.
This project is maintained and published by Amazon Web Services.

.. note::

  This project is not currently GA. If you are planning to use this code in
  production, make sure to lock to a minor version as interfaces may break
  from minor version to minor version. For a basic, stable interface of
  s3transfer, try the interfaces exposed in `boto3 <https://docs.aws.amazon.com/boto3/latest/guide/s3.html>`__

## AI interpretation — verify before relying

S3transfer manages high-level Amazon S3 upload and download operations for Python, wrapping botocore to handle multipart transfers, concurrency, and retry logic.

Verdict: S3transfer is a lightweight, actively maintained AWS library for managing S3 transfers with low install friction. Its Alpha status and explicit warning about interface instability mean production use should pin to a minor version. No known vulnerabilities; top-100 PyPI popularity suggests broad adoption despite pre-GA maturity.

[View on SkillFed](https://skillfed.io/packages/s3transfer) · [View on PyPI](https://pypi.org/project/s3transfer/)