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ef.edu

Built with hls.js, webpack, @clerk/ui 1.34.0, @wix/design-system 1.328.0, bitmovin-player 8.277.0, @thumbmarkjs/thumbmarkjs 1.11.0, @findify/bundle 7.1.108, webc-miam 10.8.0, gather-vue 8.20.3, bromcom-ui 2.12.3, cloudinary-video-player 4.1.2, dashjs and more. 5 pages and 95 stored files, last crawled 2026-10-02.

rank 429,625 81 libraries 0 identifiers 123 third-party hosts 1 crawl open the site

Technologies and libraries

Recognised by fingerprinting the stored files and bundles against known releases; a version is the release the bytes match.

LibraryVersionSeen
hls.js 2026-10-02
webpack 2026-10-02
@clerk/ui 1.34.0 2026-10-02
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dashjs 2026-10-02
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facebook-sdk 2026-10-02
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vimeo-player 2026-10-02
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face-age 2.4.6 2026-09-24
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webex 3.12.0 2026-09-24
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markmap-lib 0.18.12 2026-09-24
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@pdftron/pdfjs-express-viewer 8.7.5 2026-09-24

Tracking, tag and verification IDs

No analytics property, tag manager container, pixel or site-verification token was found in the stored source.

Third-party hosts

Hosts outside ef.edu that its pages load scripts, frames or stylesheets from, and that its own scripts name in absolute URLs (connect). Each links to every site loading from the same host.

HostLoaded asFound in
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cdn.embed.ly connect view source
cdn.jsdelivr.net connect view source
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cdnjs.cloudflare.com connect view source
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connect.facebook.net connect view source
dashif.org connect view source
data-api-qa.ef.com connect view source
data-api.ef.com connect view source
dequeuniversity.com connect view source
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ef-enterprise.oriserve.com connect view source
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github.com connect view source
img.litix.io connect view source
impact.ef.com connect view source
json-schema.org connect view source
liff-subwindow.line.me connect view source
liff.line.me connect view source
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www.ef-slovakia.sk connect view source
www.ef.at connect view source
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www.ef.com connect view source
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www.ef.com.br connect view source
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www.ef.com.hk connect view source
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www.ef.com.pe connect view source
www.ef.com.tr connect view source
www.ef.com.tw connect view source
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www.ef.de connect view source
www.ef.do connect view source
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www.ef.edu.pt connect view source
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www.facebook.com connect view source
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www.mixcloud.com connect view source
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www.w3.org connect view source
www.youtube-nocookie.com connect view source
www.youtube.com connect view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 95) }. Versions are the crawls at which the file was new or its content changed; each opens the file as it was then, rebuilt from the same stored chunks.

FileKindSizeCollectedVersions
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Timeline

One entry per crawl, newest first, with what changed since the crawl before: libraries, identifiers, third-party hosts and files. Historical versions stay viewable because the stored chunks are shared between versions, never copied.

  1. first crawl

    5 pages, 95 files, 19.5 MB; 73 libraries, 0 identifiers, 123 third-party hosts

    73 libraries added
    • in-renderer-js 1.2.3
    • diffusion 6.12.2
    • gather-vue 8.20.3
    • webpack
    • theoplayer 11.12.0
    • @marimo-team/frontend 0.25.0
    • bromcom-ui 2.12.3
    • @scalar/api-reference 1.72.1
    • @feathery/react 2.98.1
    • @bikematrix/web-components 1.3.23
    • @chatvolt/embeds 4.3.16
    • tdesign-react 1.18.3
    • and 61 more
    123 third-party hosts added
    95 files added

Questions about ef.edu

How does PageSourceSearch know what ef.edu is built with?
From the site's own source code. The crawler stores the exact bytes of its pages and first-party scripts; the libraries are recognised by fingerprinting that code against known releases, the identifiers are read out of the tag snippets, and the third-party hosts are the script, iframe and stylesheet sources in the HTML and the absolute URLs inside the scripts. Nothing is inferred from headers or guessed.
How far back does the history of ef.edu go?
To the first crawl the timeline lists. Every crawl records what the site looked like; when a file's content changes, its earlier version stays viewable because the stored chunks are never deleted, only mapped. A crawl that finds a file unchanged adds no copy.
Can I see an older version of a script from ef.edu?
Yes. In the stored files list, every date under a file opens the version that was live at that crawl, with the same viewer as the current one. The raw bytes can be downloaded from there.
Which other websites use the same tracking IDs as ef.edu?
Each identifier links to its reverse lookup, the list of every site in the index whose source carries the same id: the sites one analytics property or tag manager container is shared across.

Look up another site, browse sites by tracking ID, third-party host or technology. Site owners: see the crawler page for how stored pages are removed.