---
id: ua-parser
version: "1.0.2"
license: Apache-2.0
license_treatment: permissive
maintenance: active
---

# ua-parser — Python port of Browserscope's user agent parser

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install ua-parser
uv add ua-parser
poetry add ua-parser

## Description

uap-python
==========

Official python implementation of the `User Agent String
Parser <https://github.com/ua-parser>`_ project.

Build Status
------------

.. image:: https://github.com/ua-parser/uap-python/actions/workflows/ci.yml/badge.svg
   :target: https://github.com/ua-parser/uap-python/actions/workflows/ci.yml?query=branch%3Amaster
   :alt: CI on the master branch

.. image:: https://readthedocs.org/projects/uap-python/badge/?version=latest
   :target: https://uap-python.readthedocs.io/
   :alt: Documentation Status

Installing
----------

Add ``ua-parser[regex]`` to your project's dependencies, or run

.. code-block:: sh

    $ pip install 'ua-parser[regex]'

to install in the current environment.

ua-parser supports CPython 3.10 and newer, recent pypy (supporting
3.10), and GraalPy 25.

.. note::

   The ``[regex]`` feature is *strongly* recommended, the Pure python
   (no feature) is *significantly* slower, especially on non-cpython
   runtimes, though it is the most memory efficient.

   See `builtin resolvers`_ for more explanation of the tradeoffs
   between the different options.

.. _builtin resolvers:...

## AI interpretation — verify before relying

Parses user-agent strings to extract browser, operating system, and device information. Provides structured access to family, version, and device details from HTTP user-agent headers.

Verdict: Production-ready, actively maintained parser with no known vulnerabilities and permissive licensing. Low install friction and broad Python runtime support make it a solid choice for user-agent analysis in web applications.

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