ujson
Ultra fast JSON encoder and decoder for Python
5.13.0
35M downloads/mo
#754 most downloaded on PyPI
ultrajson/ultrajson
What this package is like to depend on
Last release 2 months ago
14 Jun 2026
Release timing varies
gaps range from 5 weeks to 1.3 years
No release notes found
nothing matched a version
Nothing withdrawn
no release was ever pulled
15 years old
42 releases · first in 2011
3 releases in the last 12 months
see the full history below
Release timeline
42 releases · Jun 2011 to Jun 2026Releases
latest 42-
5.13.014 Jun 2026Nothing published for this version
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5.12.105 May 2026Nothing published for this version
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5.12.011 Mar 2026Nothing published for this version
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5.11.020 Aug 2025Nothing published for this version
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5.10.014 May 2024Nothing published for this version
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5.9.010 Dec 2023Nothing published for this version
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5.8.011 Jun 2023Nothing published for this version
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5.7.006 Jan 2023Nothing published for this version
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5.6.001 Dec 2022Nothing published for this version
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5.5.015 Sep 2022Nothing published for this version
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5.4.002 Jul 2022Nothing published for this version
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5.3.018 May 2022Nothing published for this version
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5.2.005 Apr 2022Nothing published for this version
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5.1.020 Dec 2021Nothing published for this version
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5.0.016 Dec 2021Nothing published for this version
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4.3.022 Nov 2021Nothing published for this version
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4.2.022 Sep 2021Nothing published for this version
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4.1.016 Aug 2021Nothing published for this version
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4.0.221 Jan 2021Nothing published for this version
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4.0.109 Oct 2020Nothing published for this version
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4.0.007 Oct 2020Nothing published for this version
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3.2.008 Sep 2020Nothing published for this version
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3.1.002 Aug 2020Nothing published for this version
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3.0.003 Jun 2020Nothing published for this version
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2.0.324 Mar 2020Nothing published for this version
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2.0.215 Mar 2020Nothing published for this version
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2.0.108 Mar 2020Nothing published for this version
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2.0.007 Mar 2020Nothing published for this version
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1.3520 Jan 2016Nothing published for this version
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1.3430 Nov 2015Nothing published for this version
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1.3311 Jun 2013Nothing published for this version
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1.3018 Feb 2013Nothing published for this version
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1.2306 Nov 2012Nothing published for this version
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1.2201 Oct 2012Nothing published for this version
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1.2101 Oct 2012Nothing published for this version
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1.1926 Jun 2012Nothing published for this version
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1.1807 Feb 2012Nothing published for this version
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1.1514 Dec 2011Nothing published for this version
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1.919 Sep 2011Nothing published for this version
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1.809 Sep 2011Nothing published for this version
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1.617 Aug 2011Nothing published for this version
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1.416 Jun 2011Nothing published for this version