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jeffposnick
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Jeff Posnick
@jeffposnick
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Open GitHub
🇺🇸 Brooklyn, NY
Profile age: over 13 years
Updated about 20 hours ago
1,153 followers • 1 following
Contacts
github@posnick.org
https://jeffy.info
@jeffposnick
@jeffposnick@hachyderm.io
in/jeffposnick
@jeff.posnick.org
Profile Overview
Global
United States
Beginner
Adept
Advanced
Expert
Master
Elite
Legend
Global Rank
Legend 2
Persona
Influencer
#25,353
#20,858
#6,113
Explore Ranks
Top 3 Languages By Stars
All Languages
Top 5 Repositories
create-react-pwa
1,268
105
2
updated almost 5 years ago • age about 9 years
HTML
55.8%
JavaScript
44.2%
yt-playlist-notifier
87
10
updated over 1 year ago • age almost 4 years
TypeScript
78.5%
CSS
11.4%
JavaScript
7.5%
HTML
2.6%
jeffy-info
48
3
updated about 1 month ago • age almost 11 years
TypeScript
53.5%
Handlebars
40.2%
CSS
6.3%
service-worker-cache
12
4
7
updated about 10 years ago • age about 11 years
HTML
86.4%
JavaScript
13.6%
offline-ereader
12
10
updated almost 3 years ago • age about 11 years
JavaScript
71.6%
CSS
18.7%
HTML
9.6%
View all 20 repositories
Last Contributions
2022
WebFundamentals
2 PRs
+10
-18
JavaScript
13,873
2,546
3
workbox
~13 PRs
+121
-61
JavaScript
12,783
858
85
content
1 PR
+4
-4
Markdown
9,783
22,874
microbundle
1 PR
+5
-2
JavaScript
8,138
361
37
web.dev
~55 PRs
+104
-553
Nunjucks
3,605
1,566
View all contributions
Latest Updates
27 Oct 2025
Followers Count:
1,151
1,153
13 Oct 2025
Followers Count:
1,152
1,151
01 Sep 2025
Company:
@TwoSigma (removed)
Followers Count:
1,150
1,152
17 Aug 2025
Followers Count:
1,151
1,150
03 Aug 2025
Followers Count:
1,153
1,151
04 Jan 2025
First seen
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