Companies Using jsDelivr

I build prospect lists from detections like this one, and jsDelivr needs a different reading from a paid tool. Nobody buys it. A domain counts when a page on it loads any file from cdn.jsdelivr.net, which can mean a developer's choice or a theme's. As of our October 2026 crawl that's 2,012,188 domains after cleaning, 3rd of the 60 CDNs we track, with 1,050,561 matched to a company. So the useful question is what a jsDelivr hit tells you about the site.

One marketplace in the count

Start with what isn't a real site. Our raw count was 2,302,474 live domains, and we removed 290,286 of them, 12.61%, as for-sale landers and gambling pages. 246,098 belong to one marketplace, HugeDomains, whose parked domains redirect to a sales page that loads the fancybox lightbox from jsDelivr. That's 10.69% of the raw count, and it changes the ranking. On raw numbers jsDelivr led cdnjs by 11,435 domains; cleaned, cdnjs leads by 249,339, because only 16 of the 38,591 domains removed from cdnjs were HugeDomains pages.

Sales signal: dedupe by redirect target before you size any CDN-based list. A domain that lands on hugedomains.com isn't a prospect.

Growth trajectory

We have one cleaned month, so I won't draw a trend from it. Our raw monthly counts, landers included, start at 1,735,630 in June, and the biggest step came in July (380,231 domains). That step is mostly our side, not the web: the set we crawl turns over each month as dead sites drop out and new ones come in, and our detection signals widen over time. Since March 2026, 368,118 domains dropped jsDelivr, and about one in eight still load it on another hostname. A free file host has no renewal, so those exits are more likely to be redesigns and closed sites than decisions against jsDelivr.

"There's no contract behind a jsDelivr hit, so the count measures how websites get built: which themes, plugins and templates reach for a public CDN." - Emma Davies, Data Analyst at TechnologyChecker.io

Sales signal: treat jsDelivr as a marker on about two million sites, useful for describing a site's build rather than for timing a sale.

Who loads it

56.35% of matched companies with a known size have 1 to 10 employees and 81.87% have 50 or fewer. They're young, too: 58.06% were founded in 2010 or later. Large companies still number 19,702 above 1,000 staff, but they load jsDelivr on particular properties. In our top 50, 14 were detected on a jobs or careers site, and six of those (Boeing, Disney, ING, Itaú, Sanofi and UnitedHealth Group) run on Radancy's TalentBrew careers platform, whose asset host appears in their page source. Novartis, Taco Bell, HCLTech, Vodafone and Wendy's load it on the main site.

Sales signal: at a large company, a jsDelivr hit on a careers site points to the recruitment-marketing vendor, not the company's engineers. Ask who built the property before you pitch developer tooling.

Where and in which sectors

The United States has 287,109 matched companies, the United Kingdom 86,391, India 69,947, Brazil 59,506 and France 43,569. Industry is flat. Retail leads at 4.16%, IT services at 4.15% and real estate at 4.14%, and the top ten add up to 31.25%. The biggest single owner is a brokerage brand: Coldwell Banker holds 95 jsDelivr domains, the most of any single company on this list.

Sales signal: for agencies selling site rebuilds, real-estate brokerages are where one decision can cover dozens of jsDelivr domains at once.

Side by side with cdnjs

No pair passed our switching tests. Public CDNs aren't exclusive, so domains add and drop them without replacing one with another. 680,794 jsDelivr domains also load cdnjs, 33.83% of the cleaned set. 335,287 also load Google Hosted Libraries, 295,763 the jQuery CDN and 229,595 Unpkg. And 870,222, or 43.25%, sit behind Cloudflare, the same company whose network serves cdnjs and which is one of jsDelivr's two main backend CDNs.

"A third of jsDelivr sites also load cdnjs. I read that as plugins and themes each bringing their own CDN, rather than anyone choosing between them." - Emma Davies, Data Analyst at TechnologyChecker.io

Sales signal: a site pulling files from two or three public CDNs is a candidate for a performance audit or a move to self-hosted, bundled assets. That's an easy opener for web-performance agencies.

The stack around it

Across the 2,012,187 domains in the cleaned set, jQuery runs on 77.41% and Bootstrap on 43.13%. Bootstrap's documentation points its install links at cdn.jsdelivr.net, and jsDelivr took over BootstrapCDN in March 2021, so the pairing is no accident. WordPress is on 28.37%, Elementor 6.44% and Webflow 5.32%. Swiper (25.21%) and Slick (15.43%) show how many of these sites run a carousel. Tailwind CSS is on 17.47%, a sign that newer builds use jsDelivr as well.

Sales signal: jQuery plus Bootstrap from a public CDN usually marks an older, template-built front end. Redesign agencies and WordPress maintenance shops will find more fit here than headless or React vendors.

What it costs

Nothing. jsDelivr's About page says there are no bandwidth limits or premium features, and that the traffic is donated by CDN sponsors: Cloudflare and Fastly as main backends, Bunny and GCore as regional and backup CDNs. Its privacy policy names Volentio JSD Limited, registered in England and Wales, as the operator, and the site says it serves more than 150 billion requests a month.

Sales signal: there's no jsDelivr budget to displace. Sell what sits next to it: hosting, performance work or a rebuild.

Key takeaways

1. 2,012,188 domains after cleaning, 3rd of 60 CDNs, counted as sites, not customers.

2. HugeDomains' for-sale landers were 10.69% of the raw count, enough to flip the order with cdnjs.

3. 81.87% of matched companies have 50 staff or fewer; large ones load it on careers sites and other single properties.

4. 680,794 jsDelivr domains also load cdnjs; public CDNs coexist rather than compete.

5. jQuery (77.41%) and Bootstrap (43.13%) define the typical jsDelivr site.

How to use this list

Remove redirects to marketplaces, filter by company size and country, then check which property carries the file. For the full list of 2,012,188 jsDelivr domains with company, size and stack data, explore TechnologyChecker.io.