Package

upng-js

Small, fast and advanced PNG / APNG encoder and decoder

v2.1.0, 12 Dec 2017MITCommonJSTypes: None

$ npm install upng-js

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 163.3k; +607% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 1; Direct, from package.json
Last release: 8 years ago; v2.1.0
GitHub stars: 2.2k; 262 forks
Open issues / PRs: 16 / 3
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.

163,295 downloads last week, 814,682 in the last month. The 12-month change of +607% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: -
Latest version: 2.1.0, 12 Dec 20178 years ago
First published: -
Last push to GitHub: 28 Jul 20231,154 days before the snapshot
Repository archived: No
Open issues: 16
Open pull requests: 3
Commits, last 52 weeks: 0
Dependents on npm: 115

Major versions

Recent releases

Compatibility

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

Install

npm install upng-js

CDN

jsDelivr: 114.9k requests in 30 days

jsDelivrhttps://cdn.jsdelivr.net/npm/upng-js@2.1.0/
unpkghttps://unpkg.com/upng-js@2.1.0/
esm.shhttps://esm.sh/upng-js@2.1.0

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

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