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Websites using Polyfill 3

Polyfill is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser.

Lead List Exporter

12.4k live Polyfill 3 sites, ready to export.

That's how many Polyfill 3 websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.

Pick a ready-made template, or build your own filters in the Lead List Exporter and pay only for the rows you export.

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Just need a few domains? Export up to 10 free from a subset of our crawl.

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Every Polyfill 3 website we detected in the United States.

Only sites where a personal, company-hosted email was found.

Sites with at least one personnel LinkedIn profile.

Start with the highest-traffic end of the dataset.

Limit results to Polyfill 3 websites on .com domains.

Only sites where an organisation phone number was found.

Create your own

How many websites use Polyfill 3?

We found Polyfill 3 on 12,490 websites in our September 2026 crawl, across 129 countries.

Which countries use Polyfill 3 the most?

By number of websites, the top countries are United States (16%, 1,969 sites), Japan (12%, 1,558 sites), France (6%, 785 sites), Germany (5%, 589 sites) and United Kingdom (4%, 557 sites). Together they account for 44% of the 12,490 Polyfill 3 sites we track. 43% of the sites are in English, and .com is the most used domain ending, on 37% of them.

Where are Polyfill 3 websites hosted?

The networks carrying the most Polyfill 3 sites are Fastly, Inc. (2,181 sites), Amazon.com, Inc. (1,287 sites) and OVH SAS (658 sites).

What technologies are used with Polyfill 3?

Across the 12,490 Polyfill 3 sites we track, the technologies most often found alongside it are jQuery (66%, 8,193 sites), PHP (46%, 5,723 sites), Bootstrap (37%, 4,666 sites), jsDelivr (36%, 4,520 sites) and Nginx (33%, 4,128 sites).

Deep Dive

Breakdown of Polyfill 3 websites

What else they run, plus their language, hosting network, domain extension and country.

FAQ

Answers drawn from our latest crawl of Polyfill 3 websites. Anything else, email us and we will look it up.

Through our own crawl, which checks each site's HTML, scripts and headers rather than relying on self-reported data.