jsDelivr vs Sirv
A detailed comparison to help you choose between jsDelivr and Sirv.
Quick Verdict
4.3/5
jsDelivr
0 reviews
3.4/5
Sirv
0 reviews
jsDelivr is rated higher (4.3 vs 3.4). jsDelivr is a free CDN for open source npm and GitHub packages. Serve any npm package from the CDN with automatic versioning. Used by millions of websites. No setup required. Sirv delivers images and videos globally with automatic format conversion, responsive sizing, and interactive features. Built for e-commerce, media, and content-heavy sites needing fast load times.
jsDelivr Free CDN for open source JavaScript packages | Sirv Image and video CDN with smart optimization built in | |
|---|---|---|
| Overview | ||
| Rating | 4.3 (0 reviews)✓ | 3.4 (0 reviews) |
| Pricing model | free | freemium |
| Starting price | Free | Free tier available |
| Best for | Websites and developers serving open source JavaScript, CSS, and library assets from npm, GitHub, or WordPress plugins via CDN | E-commerce and product-media teams that need zoomable, spinable, responsively delivered product imagery — especially on Shopify, WooCommerce, Magento or Drupal — without building their own image-processing stack. |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Data-center locations | ||
| Regions | Global multi-CDN: Cloudflare, Fastly, Bunny, Gcore plus custom servers | — |
| Tags | ||
| Tags | free tieropen source | free tierapi access |
| Visit jsDelivr → | Visit Sirv → | |
jsDelivr
Pros
- + Completely free with no bandwidth limits or premium tiers
- + Multi-CDN delivery (Cloudflare, Fastly, Bunny, Gcore) with 540+ points of presence
- + Proven at very large scale — hundreds of billions of requests per month
- + Version pinning, semver ranges, purge API, stats API, ESM support (esm.run)
- + Absorbed BootstrapCDN, RawGit, and OSSCDN — broad legacy URL coverage
Cons
- - No SLA, no support contract, no uptime guarantee — offered as-is
- - Open source files only (npm, GitHub, WordPress plugins); not for private application assets
- - Upstream package removals or policy decisions can take files offline
- - Sponsorship-funded and small-team operated; support is best-effort
Sirv
Pros
- + On-the-fly image transformation from URL parameters — no build-time processing pipeline to maintain
- + 360° spin and deep zoom are first-class, not add-ons, which is what product photography actually needs
- + Generous free tier with S3 and FTP access, so originals stay portable
- + Soft limits instead of hard cutoffs — a traffic spike does not break the site
- + Long track record (since 2007) and a 99.999% SLA on Enterprise
Cons
- - 20 GB transfer on the $19 Business plan is thin for media-heavy stores; scale pricing needs a custom conversation
- - No published uptime commitment below Enterprise — failover and off-site replication are $999/month features
- - Video delivery is a secondary feature, not competitive with dedicated video platforms
- - Small vendor (roughly a dozen staff, unfunded) — weigh continuity risk and keep originals exported
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