# cdnjs/cdnjs

🤖 CDN assets - The #1 free and open source CDN built to make life easier for developers.

Repository: https://github.com/cdnjs/cdnjs
Canonical: https://ross.abutalabs.com/products/cdnjs
Homepage: https://cdnjs.com
License: MIT
License Family: permissive
Topics: cdn, javascript, css, library, web, front-end, foss, opensource, js, font, framework, webdev, fast, speed, http2, spdy, cdnjs
Last push: 2025-09-30T09:11:25+00:00

## Health v2 (maintenance only)
Score: 52/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 44, release rhythm 35, longevity 100
- inputs: {"age_days": 5668, "days_push": 337, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 10732, forks 4471 (observed 2026-08-28T04:10:43.945893+00:00)

## What it is
cdnjs is a free, open-source content delivery network (CDN) hosting thousands of JavaScript, CSS, font, and other web library assets, powered by Cloudflare and serving over 200 billion requests per month. This repository is the robot-only storage for all hosted library assets, with library metadata managed in the separate cdnjs/packages repository.

## Use cases
- load javascript libraries from a cdn instead of self-hosting
- serve css frameworks and fonts quickly to website visitors
- find the cdn url for a specific version of a library
- query an api to search available frontend libraries
- speed up website load times with http2 and brotli compression
- host open-source library files for free

## When to choose
- you need fast, reliable, free hosting of popular frontend library assets
- you want a public cdn backed by cloudflare with http/3 and hsts
- you need a searchable api of frontend libraries and versions

## When to avoid
- you need to host your own application assets rather than public libraries
- you require full control over asset availability and uptime guarantees
- you need private or authenticated asset delivery

## Facets
- artifact type: service
- maturity: stable
- function: developer-tools, web-framework, package-manager
- domain: web-development, frontend, developer-tools, self-hosted
- platform: cloud, cross-platform
- tags: cdn, cdnjs, javascript, css, fonts, static-assets, cloudflare, http2, http3, open-source, web-server

## Member repositories
- cdnjs/cdnjs (main) score 52

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:43.945893+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:17:55.822777+00:00, confidence not recorded.
  - readme: https://github.com/cdnjs/cdnjs (fetched 2026-08-28T04:10:43.945893+00:00, sha 9a88e0c993be)
  - homepage: https://cdnjs.com (fetched 2026-08-29T08:17:29.117774+00:00, sha 0b89da7378bf)
  - site_page: https://cdnjs.com/about (fetched 2026-08-29T08:17:29.120384+00:00, sha 303fab82fa77)
  - site_page: https://cdnjs.com/api (fetched 2026-08-29T08:17:29.122864+00:00, sha 2dd47fea0181)
- Data as of 2026-08-30T08:39:29.467469+00:00.