Site profile
huygens-fokker.org
Built with jquery 1.5, gtag, magnific-popup 1.2.0, c2pa 0.30.17, vimeo-player, jsxgraph 1.13.3, supafolio-sdk 1.4.1, webex 3.12.0, @opentok/client 2.35.2, jquery.flipster 1.1.6, @vitest/utils 5.0.2, @pdftron/pdfjs-express-viewer 8.7.5 and more. 5 pages and 33 stored files, last crawled 2026-10-02.
rank 432,909 21 libraries 1 identifier 13 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.
| Library | Version | Seen |
|---|---|---|
| jquery | 1.5 | 2026-10-02 |
| gtag | 2026-10-02 | |
| magnific-popup | 1.2.0 | 2026-10-02 |
| c2pa | 0.30.17 | 2026-10-02 |
| vimeo-player | 2026-10-02 | |
| jsxgraph | 1.13.3 | 2026-10-02 |
| supafolio-sdk | 1.4.1 | 2026-10-02 |
| webex | 3.12.0 | 2026-10-02 |
| @opentok/client | 2.35.2 | 2026-10-02 |
| jquery.flipster | 1.1.6 | 2026-10-02 |
| @vitest/utils | 5.0.2 | 2026-10-02 |
| @pdftron/pdfjs-express-viewer | 8.7.5 | 2026-10-02 |
| lucid-ui | 8.16.0 | 2026-10-02 |
| @okta/okta-signin-widget | 7.49.1 | 2026-10-02 |
| @grigorov-it/mazer | 2.2.0 | 2026-10-02 |
| nivo-slider | 3.2.0 | 2026-10-02 |
| jquery.maskedinput | 1.4.1 | 2026-09-24 |
| formiojs | 4.21.7 | 2026-09-24 |
| @pdftron/webviewer | 12.1.0 | 2026-09-24 |
| @formio/js | 5.6.1 | 2026-09-24 |
| @mgdis/mg-components | 6.29.0 | 2026-09-24 |
Tracking, tag and verification IDs
Public identifiers read out of the source. Each links to every other site in the index that carries the same one.
| What | Value | Found in |
|---|---|---|
| Google tag id (Google) | GT-NFBZGM7M | view source |
Third-party hosts
Hosts outside huygens-fokker.org 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.
| Host | Loaded as | Found in |
|---|---|---|
| blip.tv | connect | view source |
| embed-ssl.ted.com | connect | view source |
| embed.revision3.com | connect | view source |
| feedburner.google.com | connect | view source |
| flickr.com | connect | view source |
| player.vimeo.com | connect | view source |
| www.collegehumor.com | connect | view source |
| www.dailymotion.com | connect | view source |
| www.funnyordie.com | connect | view source |
| www.google.com | iframe | view source |
| www.googletagmanager.com | script | view source |
| www.hulu.com | connect | view source |
| www.w3.org | connect | view source |
Stored pages and scripts
The newest stored version of each file, newest first@if (p.FilesTruncated) {
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.
-
first crawl
5 pages, 22 files, 2.3 MB; 16 libraries, 1 identifier, 13 third-party hosts
16 libraries added
- @vitest/utils 5.0.2
- gtag
- jquery.flipster 1.1.6
- @grigorov-it/mazer 2.2.0
- jsxgraph 1.13.3
- nivo-slider 3.2.0
- jquery 1.5
- magnific-popup 1.2.0
- @okta/okta-signin-widget 7.49.1
- lucid-ui 8.16.0
- c2pa 0.30.17
- supafolio-sdk 1.4.1
- and 4 more
1 identifier added
- GT-NFBZGM7M Google tag id
13 third-party hosts added
22 files added
- https://huygens-fokker.org/ html
- https://huygens-fokker.org/contact/ html
- https://huygens-fokker.org/agenda/ html
- https://huygens-fokker.org/concertarchief/ html
- https://huygens-fokker.org/microfest-amsterdam/ html
- https://huygens-fokker.org/wp-content/cache/min/…nguage-cookie.js?ver=1790338522 js
- https://huygens-fokker.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 js
- https://huygens-fokker.org/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1 js
- https://huygens-fokker.org/wp-content/cache/min/…/mc-validate.js?ver=1790338529 js
- https://huygens-fokker.org/wp-content/plugins/ad…agnific-popup.min.js?ver=4.12.1 js
- https://huygens-fokker.org/wp-content/cache/min/…/js/frontend.js?ver=1790338522 js
- https://huygens-fokker.org/wp-content/themes/Divi/js/scripts.min.js?ver=4.27.8 js
- and 10 more
Questions about huygens-fokker.org
- How does PageSourceSearch know what huygens-fokker.org 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 huygens-fokker.org 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 huygens-fokker.org?
- 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 huygens-fokker.org?
- 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.