Drop in a script tag and load open source libraries from a CDN. jsDelivr is a free CDN for JavaScript and open source projects. It serves files straight from npm, GitHub and WordPress, works with all web formats, and is tuned for JS and ESM delivery. The homepage says it is free to use for all users and is backed by several CDN providers, including Cloudflare, Fastly and Gcore Labs. It reports 372 billion requests and more than 23,444 TB of bandwidth in the past month, though the page's meta description says more than 150 billion requests a month, so treat the traffic figure loosely. G2 shows 4.5 from 4 reviews, with praise for reliability and speed. A Reddit poster who tried 3 or 4 CDNs said reliability set jsDelivr apart because they had a lot of downtime with others. The homepage I read states no usage limits or commercial terms.
Free tier quotas
Price
Free for all users
Sources
npm, GitHub and WordPress
Formats
Works with all web formats
Delivery
Optimized for JS and ESM
Traffic reported
372 billion requests in the past month (page body)
Bandwidth reported
More than 23,444 TB in the past month
CDN providers
Cloudflare, Fastly and Gcore Labs, among others
Usage limits
None stated on the homepage
Last sniffed Oct 8, 2026. Always confirm on the official pricing page.
👍 Good boy
+The homepage says jsDelivr is free to use for all users, with no plan or tier listed.
+It serves files from npm, GitHub and WordPress directly, and a r/javascript thread title describes it as a CDN based on GitHub for publishing open source libraries.
+G2 shows 4.5 from 4 reviews, and a top review praises its reliability and speed as a free CDN.
+A Reddit poster who tried 3 or 4 CDNs said reliability sets jsDelivr apart, because they had a lot of downtime with others.
+A r/javascript commenter who has used it for years on open source projects called it totally painless from a developer point of view.
+Traffic is served through several CDN providers, including Cloudflare, Fastly and Gcore Labs, according to the homepage.
👎 Watch out
−The homepage states no usage limits, commercial terms or uptime guarantee, so there is no written promise to rely on.
−G2 has only 4 reviews, so the 4.5 rating rests on a small sample.
−A r/javascript thread titled 'cdn jsDelivr starting the day not so well' suggests a bad day for users at some point. I could only read the title.
−A r/programming post titled 'Public CDNs Are Useless and Dangerous' argues public CDNs such as jsDelivr and cdnjs offer no benefit. The excerpt I read was cut off.
The catch
jsDelivr has no paid plan on the pages I read, and the homepage states no usage limits. It says the CDN is free to use for all users and aimed at open source projects. I could not find a written commercial-use statement, so read jsDelivr's terms before you put a revenue-generating site on it.
The homepage shows 372 billion requests in the past month in its body text, while its meta description says more than 150 billion a month. I report both and rely on neither.
There is no contractual uptime promise on the page. Reddit threads praise its reliability over several years, and one thread title suggests a rough morning at some point, so keep a fallback copy of any script your site cannot load without.
What’s included
✓npm package delivery
✓GitHub repository delivery
✓WordPress delivery
✓JS and ESM optimized delivery
✓Works with all web formats
✓Multi-CDN backing
✓Free for all users
Free tier value
Generosity
A
Estimated value
Free CDN with no stated cap
Feature parity
One free service with no tiers and no stated cap.
Screenshots
jsDelivr homepage
Paid plans
Free, all users
The homepage says jsDelivr is free to use for all users, particularly open source projects.
Paid plans, none listed
I found no paid tier, support plan or service level agreement on the homepage.
Common questions
Is jsDelivr free?
Yes. The homepage says it is free to use for all users.
What can it serve?
Files from npm, GitHub and WordPress, in all web formats.
Are there usage limits?
The homepage states none. I did not find a fair use policy in the pages I read.
Can I use it on a commercial site?
The homepage does not say. Check the terms before relying on it for a business.
Is it reliable?
A Reddit poster who tried 3 or 4 CDNs and a G2 reviewer both praise reliability. A r/javascript thread title suggests an outage or slowdown at some point.
How big is the network?
The page body reports 372 billion requests in the past month. The meta description says more than 150 billion a month.
Change history
Checked October 22, 2026
The homepage lists jsDelivr as free for all users, serving npm, GitHub and WordPress content.
