UNPKG
Depends
Confidence: Medium
Use it free for demos, prototypes, and quick script tags . it's dead simple and costs nothing.
New check
Comparison
UNPKG vs Skypack
UNPKG and Skypack both land on Depends.
Skypack
Depends
Confidence: Medium
Fine for prototypes, demos, and Deno imports where a free CDN URL beats installing anything.
| Compare | ||
|---|---|---|
| Verdict | Depends | Depends |
| Best for | Quick demos and prototypes | No-build prototypes and demos |
| Who it's not for | Production sites . outages have broken thousands | Production apps needing uptime SLAs or vendor contracts |
| Privacy | No breach of unpkg itself found, but it is repeatedly abused as phishing infrastructure; one open-redirect report.⁶ | No known public vulnerabilities found in the sources reviewed.14 |
| Support quality | No SLA; outages left users stranded | No support evidence found |
| Public sentiment | Users love the simplicity but repeatedly hit outages and warn against depending on it for anything important. | Mentions are mostly directory listings and dated community posts praising the no-install CDN approach; recent first-hand feedback is scarce.15 |
| Biggest gotcha | Zero SLA or support . when it breaks, your site breaks with it⁵ | Free forever with no paid tier means no revenue; long-term availability is unproven. |
Pick UNPKG when
- Quick demos and prototypes
- Open-source docs and playgrounds
- Browser-only apps with no build step
- One-off script tags for libraries
When UNPKG is not a fit
- Production sites . outages have broken thousands
- Anything needing uptime SLAs or support
- Security-sensitive orgs worried about supply-chain abuse
- High-traffic apps needing guaranteed edge performance
Pick Skypack when
- No-build prototypes and demos
- Deno users importing packages by URL
- Single-file browser experiments
- Learning ESM without tooling
When Skypack is not a fit
- Production apps needing uptime SLAs or vendor contracts
- Teams already running bundlers like Vite or webpack
- Enterprises with security review requirements . no security page exists
- Long-lived infrastructure pinned to a free service with no revenue
Sources
- UNPKG official siteunpkg.comofficial
- unpkg/unpkg on GitHubgithub.comofficial
review
- UNPKG.com completely unusable . Nylas forumsforums.nylas.comreview
security
- 24 npm packages abuse unpkg mirrors . Hacker Newsthehackernews.comsecurity
- Open redirect report OBB-3870005openbugbounty.orgsecurity
- jsDelivr vs unpkg vs cdnjs benchmarkblog.blazingcdn.comreview
- Migrate from unpkg to jsDelivrjsdelivr.comreview
- unpkg usage statistics . w3techsw3techs.comreview
review
- Skypack homepageskypack.devofficial
- Skypack security pageskypack.devsecurity
- Singapore Deno User Groupfacebook.comreview