PyRank
Kijewski

pyjson5

A JSON5 serializer and parser library for Python 3 written in Cython.
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

pyjson5 has 2.6M monthly downloads and 178 GitHub stars. Version 2.0.1 supports Python ~=3.8, first published in 2018.

It is stably maintained under a permissive license, last released in May 2026.

It is used by 79 tracked packages, including application-properties, dda and kaggle-environments.

GitHub topics include json, json5 and cpython.

Downloads
Day
44.9K
Week
389.2K
Month
2.6M
Stars
178
Forks
14
Issues
12
Version
2.0.1

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
80
Popularity
43
Adoption
60
Community
25
Provenance
0
How the maintenance status was determined
Last commit
49 days ago
Monthly downloads
2,591,965
Active
Activity within 30 days
• Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
2,591,965
Stars
178
Stars per 1k downloads
0.07
Industry Standard
> 10,000,000 monthly downloads
• Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
55,596
Month daily avg
86,399
Momentum
-35.7%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
~=3.8
Cutting Edge
Minimum supported version is 3.12 or newer
Modern
Minimum supported version is 3.9, 3.10, or 3.11
• Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
MIT OR Apache-2.0
• Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
52 days ago
Total releases
25
Releases/year
3.1
Rapid
Last release within 365 days and > 12 releases/year
• Regular
Last release within 365 days
Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
6
Monthly downloads
2,591,965
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
• Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
51
 
Issue Burden
67.4
per 1k stars
Discussions
73.0
per 1k stars
Fork Ratio
42.9%
contrib / forks
Stale Release
No
 
PR Velocity
Active
 

Weekly Downloads

GitHub Stars

Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 19.9K
Windows 1.0K
macOS 867

Python Versions

3.12
38.0% 8.0K
3.14
22.3% 4.7K
3.11
19.6% 4.1K
3.13
15.6% 3.3K
3.10
4.6% 965

Top Countries

1. US US
17.0K
2. SG SG
1.9K
3. CN CN
1.1K
4. SE SE
1.1K
5. DE DE
364
6. AT AT
317
7. JP JP
227
8. FI FI
206
9. GB GB
195
10. KR KR
164
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
MIT OR Apache-2.0
First Release
May 3, 2018
Last Release
1 month ago
Last Commit
1 month ago
Latest Version
2.0.1
Total Releases
25
Contributors
6
Open PRs
6
Archived
No
Author
René Kijewski
Python Versions
3 3.8 3.9 3.10 3.11 3.12 3.13 3.14
Wheels
cp310 cp311 cp312 cp313 cp314 cp35 cp36 cp37 cp38 cp39 pp38
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links