Websites using YouTube IFrame Player API
The YouTube IFrame Player API lets a page control embedded YouTube players from JavaScript. About 779,834 websites in the PageSourceSearch index contain the code that reveals it; the 50 highest-ranked are listed below.
How is YouTube IFrame Player API detected?
Pages load the API from www.youtube.com/iframe_api. The discovery keyword is the exact bytes PageSourceSearch looks for in every stored page and script:
youtube.com/iframe_api Search the index for it
A literal is matched byte for byte, case-sensitively. Combine it with another keyword, a domain, a kind or a date filter on the search page to narrow the list. About YouTube IFrame Player API
Top 50 websites using YouTube IFrame Player API
Ranked by the domain's position in the crawl's ranked list (Common Crawl harmonic centrality), highest first. view source opens the stored page or script with the match highlighted. Computed 2026-10-04 21:26:43 UTC.
How it appears in the source
From cdc.gov (js):
m:x}):""})();var R=1;if(d.YOUTUBE){G=document.createElement("script");G.src="https://www.youtube.com/iframe_api";A=document.getElementsByTagName("script")[0]; A.parentNode.insertBefore(G,A);var D=[],
Questions about finding YouTube IFrame Player API
- How does PageSourceSearch know a website uses YouTube IFrame Player API?
- By the source itself: Pages load the API from www.youtube.com/iframe_api. PageSourceSearch stores the raw HTML and first-party JavaScript of each crawled site and matches the keyword byte for byte, so every listed site's stored source contains it.
- Is this a complete list of websites using YouTube IFrame Player API?
- No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 779,834 websites that do; the count is the index's estimate at the time the list was computed. Run the keyword as a search to page through all of them, or add a kind or date filter.
- How do I find websites that use YouTube IFrame Player API together with another technology?
- Search for both keywords at once: several terms separated by spaces must all be found on the same site, or with the Same page toggle in the same page. For example youtube.com/iframe_api with wp-content/plugins/ lists the WordPress sites that use YouTube IFrame Player API.