certifi
PyPIv2026.6.17Python package for providing Mozilla's CA Bundle.
Overview
certifi is an PyPI package that python package for providing Mozilla's CA Bundle. The latest version is 2026.6.17, released under the MPL-2.0 license.
Who should use it
Teams working in the PyPI ecosystem who need python package for providing Mozilla's CA Bundle and value a focused solution.
When not to use it
Consider an alternative if you need to have first-class TypeScript types out of the box, or if a more actively-maintained option better fits your PyPI stack.
Pros
- Clear open-source license (MPL-2.0).
- Zero runtime dependencies — minimal footprint.
Cons
- No bundled TypeScript types (may require a separate @types package).
Auto-generated from collected registry metadata. No external claims are inferred.
Relationship graph
Dependencies (left) and dependents (right) of certifi.
Used by
Popular packages that depend on certifi.
Frequently installed together
Internationalized Domain Names in Applications (IDNA)
HTTP library with thread-safe connection pooling, file post, and more.
A pure-Python, bring-your-own-I/O implementation of HTTP/1.1
High-level concurrency and networking framework on top of asyncio or Trio
A minimal low-level HTTP client.
Version history
| Version | Published | License |
|---|---|---|
| 2026.6.17latest | 1 month ago | MPL-2.0 |
| 2026.5.20 | 2 months ago | MPL-2.0 |
| 2026.4.22 | 2 months ago | MPL-2.0 |
| 2026.2.25 | 4 months ago | MPL-2.0 |
| 2026.1.4 | 6 months ago | MPL-2.0 |
| 2025.11.12 | 8 months ago | MPL-2.0 |
| 2025.10.5 | 9 months ago | MPL-2.0 |
| 2025.8.3 | 11 months ago | MPL-2.0 |
| 2025.7.14 | 1 year ago | MPL-2.0 |
| 2025.7.9 | 1 year ago | MPL-2.0 |
| 2025.6.15 | 1 year ago | MPL-2.0 |
| 2025.4.26 | 1 year ago | MPL-2.0 |
| 2025.1.31 | 1 year ago | MPL-2.0 |
| 2024.12.14 | 1 year ago | MPL-2.0 |
| 2024.8.30 | 1 year ago | MPL-2.0 |
| 2024.7.4 | 2 years ago | MPL-2.0 |
| 2024.6.2 | 2 years ago | MPL-2.0 |
| 2024.2.2 | 2 years ago | MPL-2.0 |
| 2023.11.17 | 2 years ago | MPL-2.0 |
| 2023.7.22 | 3 years ago | MPL-2.0 |
Maintainers
Frequently asked questions
How do I install certifi?
Run `pip install certifi` to add certifi to your PyPI project.
What license is certifi released under?
certifi is distributed under the MPL-2.0 license.
How popular is certifi?
certifi has approximately 0 downloads per week and 2 known dependent packages.