Package

asn1

Contains parsers and serializers for ASN.1 (currently BER only)

v0.2.6, 4 Nov 2021MITCommonJSTypes: None

$ npm install asn1

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 24.9m; +27% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 1; Direct, from package.json
Last release: 4 years ago; v0.2.6
GitHub stars: 63; 37 forks
Open issues / PRs: 13 / 7
Contributors: -
Commits, last 52 weeks: 0

Downloads

Last week 2026-09-15 to 2026-09-21

Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

24,934,278 downloads last week, 116,300,495 in the last month. The 12-month change of +27% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: 018 in total
Latest version: 0.2.6, 4 Nov 20214 years ago
First published: 19 Jul 2011
Last push to GitHub: 28 Sept 20221,458 days before the snapshot
Repository archived: No
Open issues: 13
Open pull requests: 7
Commits, last 52 weeks: 0
Dependents on npm: 523

Major versions

v0 first release 0.1.8, 7 Nov 2011

Recent releases

Version	Published
0.2.6	4 Nov 2021
0.2.4	2 Aug 2018
0.2.3	30 Sept 2015
0.2.2	3 Sept 2014
0.2.1	4 Apr 2014
0.2.0	24 Feb 2014
0.1.11	6 Jan 2012
0.1.5	8 Dec 2011
0.1.6	8 Dec 2011
0.1.7	8 Dec 2011
0.1.10	8 Dec 2011
0.1.3	8 Dec 2011
0.1.4	8 Dec 2011
0.1.0	8 Dec 2011

Compatibility

Module format: CommonJSFrom package.json type, main and exports fields
TypeScript types: None
Node.js engine range: Not declared
Runtimes: -
Unpacked size (npm): 19 kB
Dependencies (1): safer-buffer

Install

npm install asn1

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/asn1@0.2.6/
unpkghttps://unpkg.com/asn1@0.2.6/
esm.shhttps://esm.sh/asn1@0.2.6

Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

Indexability: Not indexed (discovery only): no category.