jsdelivr.xyz

What It Is

jsDelivr is a free, fast, and reliable public CDN for open-source projects that has been operating since 2012. It focuses on distributing JS and ESM packages from npm and GitHub. It handles more than 150 billion requests and 5,000 TB of traffic per month, making it a piece of infrastructure that frontend developers rely on heavily.

Key Features

• Service type: A public CDN focused on the open-source ecosystem; it does not support acceleration for private business origins.
• Nodes and coverage: Uses a Multi-CDN architecture, integrating 4 CDN providers and 3 DNS providers. It has over 540 PoP nodes worldwide, with intelligent load balancing, multi-layer caching, and failover capabilities.
• Edge computing/features: Offers highly developer-friendly edge features, including on-demand merging of multiple files, automatic generation of .min compressed files, Source Map support, version aliases, and directory listings. It also provides a free API for querying package versions, entry points, and download statistics.
• China nodes/ICP filing: The official site mentions a low-latency “Near China” network, but does not clearly confirm mainland China nodes or an ICP filing. Strictly speaking, coverage for China is provided by nearby overseas nodes.

Pricing and Billing

Completely free. There are no traffic or bandwidth charges; the project is supported by sponsors.

Pros and Cons

Pros: extremely simple to use with zero configuration; global multi-CDN architecture ensures high availability; powerful on-demand compression and file-combining features; completely free. Cons: limited to hosting open-source projects and cannot be used as a private enterprise CDN; the free service does not include a commercial SLA; access from mainland China is limited by the “Near China” node setup, and stability is not as good as domestic CDNs.

Who It’s For

Frontend developers, open-source project maintainers, and individuals or small projects that need to quickly load public JS libraries.

Access from China

Network status is partially restricted. Although it offers “Near China” network optimization, it lacks an ICP filing and mainland China nodes, so direct access from within China can see fluctuating latency and stability. Payment is not a concern because the service is free. Domestic alternatives include BootCDN or ByteDance’s static resource library.