Certifi: Python SSL Certificates
Certifi provides Mozilla’s carefully curated collection of Root Certificates for validating the trustworthiness of SSL certificates while verifying the identity of TLS hosts. It has been extracted from the Requests project.
Installation
certifi is available on PyPI. Simply install it with pip:
$ pip install certifi
Usage
To reference the installed certificate authority (CA) bundle, you can use the built-in function:
>>> import certifi >>> certifi.where() '/usr/local/lib/python3.7/site-packages/certifi/cacert.pem'
Or from the command line:
$ python -m certifi /usr/local/lib/python3.7/site-packages/certifi/cacert.pem
Enjoy!
Addition/Removal of Certificates
Certifi does not support any addition/removal or other modification of the CA trust store content. This project is intended to provide a reliable and highly portable root of trust to python deployments. Look to upstream projects for methods to use alternate trust.
1 maintainer
Metadata
1 maintainer
Release files for certifi 2026.10.19
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| File | Size | Uploaded | Provenance | |
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| certifi-2026.10.19.tar.gz | 137.6 kB | With provenance | Details |
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| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| certifi-2026.10.19-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 274.1 kB
Release files / certifi-2026.10.19.tar.gz
| Download URL | certifi-2026.10.19.tar.gz |
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| Size | 137.6 kB |
| Tags | Source |
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SHA-256 checksum How to use checksums |
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| Size | 136.5 kB |
| Tags | Python 3 |
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