ujson
Ultra fast JSON encoder and decoder for Python
ujson has been downloaded 1,341,520,120 times in total on PyPI, including 29,853,728 in the last 30 days. The latest version is 6.0.0, released Sep 4, 2026.
Version6.0.0
Downloads
1.34G
License—
AuthorJonas Tarnstrom
Downloads
Weekly, last 90d.
Includes CI traffic.
VersionsTotal6.*5.*
Range
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Granularity
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CI traffic
Stack: OffCI: Included3 / 44 series
Selected total182.59M
1.3GAll-time
29.9MLast 30 days
1.2MLast 24 h
12.30/sPer second
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Version distribution
Share of downloads by released version. Computed over the last quarter.
- 0144.4%
5.13.0
41.2M downloadsDownloads41.2M44.4% - 0215.2%
5.11.0
14.1M downloadsDownloads14.1M15.2% - 0312.2%
6.0.0
11.3M downloadsDownloads11.3M12.2% - 046.9%
5.12.1
6.4M downloadsDownloads6.4M6.9% - 055.2%
5.10.0
4.8M downloadsDownloads4.8M5.2% - 064.7%
5.12.0
4.4M downloadsDownloads4.4M4.7% - 072.5%
5.4.0
2.3M downloadsDownloads2.3M2.5% - 082.1%
1.35
2.0M downloadsDownloads2.0M2.1% - 096.8%
Other
6.3M downloadsDownloads6.3M6.8%
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Thirteen recent days of ujson downloads. Drag the green handle on the right to guess where day fourteen lands.