How does PageSourceSearch know what atlas.cern 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 atlas.cern 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 atlas.cern?

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 atlas.cern?

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.

Site profile

atlas.cern

Built with js-cookie 3.0.8, jquery 1.13.2, gtag, @wix/design-system 1.328.0, jquery-ui 1.14.2, underscore 1.13.8, addthis, tabbable 6.5.0, dygraphs 2.2.2, loadjs 4.3.0, universalviewer 4.4.4, @jupyter-widgets/html-manager 1.0.15 and more. 5 pages and 112 stored files, last crawled 2026-10-02.

rank 392,736 22 libraries 3 identifiers 3 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
js-cookie	3.0.8	2026-10-02
jquery	1.13.2	2026-10-02
gtag		2026-10-02
@wix/design-system	1.328.0	2026-10-02
jquery-ui	1.14.2	2026-10-02
underscore	1.13.8	2026-10-02
addthis		2026-10-02
tabbable	6.5.0	2026-10-02
dygraphs	2.2.2	2026-10-02
loadjs	4.3.0	2026-10-02
universalviewer	4.4.4	2026-10-02
@jupyter-widgets/html-manager	1.0.15	2026-10-02
jquery.flipster	1.1.6	2026-10-02
ovenplayer	0.10.54	2026-10-02
@vitest/utils	5.0.2	2026-10-02
@bootcss/v3.bootcss.com	1.0.56	2026-10-02
owlcarousel	1.3.3	2026-10-02
@widgetti/solara-vuetify-app	10.1.1	2026-10-02
@drupal/once	1.0.1	2026-10-02
plyr	3.8.4	2026-09-24
entreprise7pro-bootstrap	3.4.8	2026-09-24
@pdftron/webviewer	12.1.0	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 site verification (Google)	51j7GT9OEskA2UMGMSE0DqIXs3ZsQpFuJ-yJXQWHjII	view source
Google site verification (Google)	LnSC4eOPWgFs8j_slMqfJnEqqbIFAa4_yMmG2B_ZfUw	view source
Universal Analytics property id (Google)	UA-79806702-1	view source

Third-party hosts

Hosts outside atlas.cern 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
framework.web.cern.ch	script stylesheet	view source
s7.addthis.com	script	view source
www.googletagmanager.com	script	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 112) }. 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.

File	Kind	Size	Collected	Versions
https://atlas.cern/themes/contrib/bootstrap/js/misc/dialog.ajax.js?tkmwzz	js	4.1 KB	2026-10-02	2026-10-02
https://s7.addthis.com/js/300/addthis_widget.js	js library	not fetched	2026-10-02	current
https://www.googletagmanager.com/gtag/js?id=UA-79806702-1	js library	not fetched	2026-10-02	current
https://atlas.cern/core/misc/dialog/dialog.ajax.js?v=10.4.10	js	10.1 KB	2026-10-02	2026-10-02
https://atlas.cern/core/misc/dialog/dialog.position.js?v=10.4.10	js	4.2 KB	2026-10-02	2026-10-02
https://atlas.cern/core/misc/dialog/dialog.js?v=10.4.10	js	3.4 KB	2026-10-02	2026-10-02
https://atlas.cern/core/misc/dialog/dialog-deprecation.js?v=10.4.10	js	1.3 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/contrib/bootstrap/js/modal.jquery.ui.bridge.js?tkmwzz	js	21.7 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/contrib/bootstrap/js/dialog.js?tkmwzz	js	5.5 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/contrib/bootstrap/js/modal.js?tkmwzz	js	18.8 KB	2026-10-02	2026-10-02
https://atlas.cern/core/misc/displace.js?v=10.4.10	js	7.9 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/tua-body-s…/tua-bsl.umd.min.js?v=10.4.10	js	3.9 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/resizable-min.js?v=1.13.2	js library	18.4 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/draggable-min.js?v=1.13.2	js library	18.1 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/widgets/mouse-min.js?v=1.13.2	js library	3.4 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/widget-min.js?v=1.13.2	js library	8.4 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/unique-id-min.js?v=1.13.2	js	594 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/tabbable-min.js?v=1.13.2	js	504 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/scroll-parent-min.js?v=1.13.2	js	726 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/safe-blur-min.js?v=1.13.2	js	272 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…-active-element-min.js?v=1.13.2	js	324 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/plugin-min.js?v=1.13.2	js library	502 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/labels-min.js?v=1.13.2	js library	728 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/keycode-min.js?v=1.13.2	js	526 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/ie-min.js?v=1.13.2	js	243 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/form-min.js?v=1.13.2	js	277 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/focusable-min.js?v=1.13.2	js	991 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…sable-selection-min.js?v=1.13.2	js	655 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/data-min.js?v=1.13.2	js	527 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/dialog-min.js?v=10.4.10	js library	13 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/jquery_ui/ass…/ui/version-min.js?v=1.13.2	js	208 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/button-min.js?v=10.4.10	js library	6.1 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/resizable-min.js?v=10.4.10	js library	19.1 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/draggable-min.js?v=10.4.10	js library	18.1 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/checkboxradio-min.js?v=10.4.10	js	4.3 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/widgets/mouse-min.js?v=10.4.10	js library	3.3 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…rm-reset-mixin-min.js?v=10.4.10	js	1.1 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/controlgroup-min.js?v=10.4.10	js library	4.4 KB	2026-10-02	2026-10-02
https://atlas.cern/core/misc/position.js?v=10.4.10	js	22 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/contrib/bootstrap/js/misc/autocomplete.js?tkmwzz	js	1.1 KB	2026-10-02	2026-10-02
https://atlas.cern/core/misc/jquery.tabbable.shim.js?v=10.4.10	js	506 B	2026-10-02	2026-10-02
https://atlas.cern/core/misc/autocomplete.js?v=10.4.10	js	7.5 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/widgets/menu-min.js?v=10.4.10	js	10 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/autocomplete-min.js?v=10.4.10	js library	8.2 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/labels-min.js?v=10.4.10	js library	724 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/widget-min.js?v=10.4.10	js library	8.5 KB	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/plugin-min.js?v=10.4.10	js library	502 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/keycode-min.js?v=10.4.10	js	528 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/focusable-min.js?v=10.4.10	js	908 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/unique-id-min.js?v=10.4.10	js	596 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/jquery-patch-min.js?v=10.4.10	js	627 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…/scroll-parent-min.js?v=10.4.10	js	728 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/…able-selection-min.js?v=10.4.10	js	657 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/data-min.js?v=10.4.10	js	469 B	2026-10-02	2026-10-02
https://atlas.cern/core/assets/vendor/jquery.ui/ui/version-min.js?v=10.4.10	js	208 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/webform/modul…m_bootstrap.states.js?v=10.4.10	js	713 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/webform/js/webform.states.js?v=10.4.10	js	22.9 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/contrib/bootstrap/js/misc/states.js?tkmwzz	js	1 KB	2026-10-02	2026-10-02
https://atlas.cern/core/misc/states.js?v=10.4.10	js	22.8 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/webform/js/webform.behaviors.js?v=10.4.10	js	1.4 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/custom/cern-component…/row/js/row.component.js?tkmwzz	js	15.8 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/custom/cern-component…omponent-preview-card.js?tkmwzz	js	499 B	2026-10-02	2026-10-02
https://atlas.cern/modules/custom/cern-component…/js/background.js?tkmwzz	js	632 B	2026-10-02	2026-10-02
https://atlas.cern/modules/contrib/matomo/js/matomo.js?v=10.4.10	js	1.4 KB	2026-10-02	2026-10-02
https://atlas.cern/sites/default/modules/google_…/google_analytics.js?v=10.4.10	js	6.7 KB	2026-10-02	2026-10-02
https://atlas.cern/sites/default/themes/cernover…/js/atlas-carousel.js?v=10.4.10	js	23.9 KB	2026-10-02	2026-10-02
https://atlas.cern/sites/default/themes/cernover…/js/script.js?v=10.4.10	js	4.5 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-theme/js/cernclean.js?tkmwzz	js	4.3 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-theme/js/anchor-fix.js?tkmwzz	js	981 B	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme/js/box-effects.js?tkmwzz	js	9.1 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme/js/views/common-views.js?tkmwzz	js	16 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme/js/views/search-views.js?tkmwzz	js	1.3 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme…/taxonomies-views.js?tkmwzz	js	not fetched	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme…/views/stories-views.js?tkmwzz	js	549 B	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme…/resources-views.js?tkmwzz	js	3.1 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme/js/views/news-views.js?tkmwzz	js	1.3 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme/js/views/faq-views.js?tkmwzz	js	821 B	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme/js/views/agenda-views.js?tkmwzz	js	2.2 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme/js/components/footer.js?tkmwzz	js	594 B	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme…/social-sharing.js?tkmwzz	js	2.1 KB	2026-10-02	2026-10-02
https://atlas.cern/themes/custom/cern-base-theme/js/cernbase.js?tkmwzz	js	10.4 KB	2026-10-02	2026-10-02
https://atlas.cern/modules/custom/cern-toolbar/assets/js/cern_toolbar.js?v=1.x	js	652 B	2026-10-02	current
https://atlas.cern/modules/custom/cern-dev-statu…rn_dev_status_expand.js?v=3.1.2	js	1.4 KB	2026-10-02	current
https://atlas.cern/core/assets/vendor/js-cookie/js.cookie.min.js?v=3.0.5	js library	1.7 KB	2026-10-02	current
https://atlas.cern/modules/custom/cern-dev-status/js/cern_dev_status.js?v=3.1.2	js	488 B	2026-10-02	current
https://atlas.cern/themes/contrib/bootstrap/js/tooltip.js?tkmwzz	js	1.6 KB	2026-10-02	current
https://atlas.cern/themes/contrib/bootstrap/js/popover.js?tkmwzz	js	5.5 KB	2026-10-02	current
https://atlas.cern/themes/contrib/bootstrap/js/theme.js?tkmwzz	js	5.1 KB	2026-10-02	current
https://atlas.cern/themes/contrib/bootstrap/js/attributes.js?tkmwzz	js	9.8 KB	2026-10-02	current
https://atlas.cern/themes/contrib/bootstrap/js/drupal.bootstrap.js?tkmwzz	js	18.2 KB	2026-10-02	current
https://atlas.cern/themes/custom/cern-base-theme…/bootstrap.min.js?tkmwzz	js library	38.8 KB	2026-10-02	current
https://atlas.cern/themes/contrib/bootstrap/js/misc/ajax.js?tkmwzz	js	3.6 KB	2026-10-02	current
https://atlas.cern/core/misc/ajax.js?v=10.4.10	js	65.5 KB	2026-10-02	current
https://atlas.cern/themes/contrib/bootstrap/js/misc/message.js?tkmwzz	js	4.5 KB	2026-10-02	current
https://atlas.cern/core/misc/message.js?v=10.4.10	js	8.2 KB	2026-10-02	current
https://atlas.cern/core/misc/announce.js?v=10.4.10	js	4.2 KB	2026-10-02	current
https://atlas.cern/core/misc/debounce.js?v=10.4.10	js	1.5 KB	2026-10-02	current
https://atlas.cern/core/assets/vendor/loadjs/loadjs.min.js?v=4.3.0	js library	1.8 KB	2026-10-02	current
https://atlas.cern/themes/contrib/bootstrap/js/misc/progress.js?tkmwzz	js	2.2 KB	2026-10-02	current
https://atlas.cern/core/misc/progress.js?v=10.4.10	js	5.1 KB	2026-10-02	current
https://atlas.cern/core/assets/vendor/tabbable/index.umd.min.js?v=6.2.0	js library	5.9 KB	2026-10-02	current
https://atlas.cern/core/misc/drupal.init.js?v=10.4.10	js	960 B	2026-10-02	current
https://atlas.cern/core/misc/drupal.js?v=10.4.10	js	20.6 KB	2026-10-02	current
https://atlas.cern/core/misc/drupalSettingsLoader.js?v=10.4.10	js	691 B	2026-10-02	current
https://atlas.cern/core/assets/vendor/once/once.min.js?v=1.0.1	js library	1.3 KB	2026-10-02	current
https://atlas.cern/core/assets/vendor/underscore/underscore-min.js?v=1.13.7	js library	19.1 KB	2026-10-02	current
https://atlas.cern/core/assets/vendor/jquery/jquery.min.js?v=3.7.1	js library	85.5 KB	2026-10-02	current
https://atlas.cern/Updates/News	html	74 KB	2026-10-02	2026-10-02
https://atlas.cern/Updates/Blog	html	75.3 KB	2026-10-02	2026-10-02
https://atlas.cern/Updates/Search	html	1.2 MB	2026-10-02	2026-10-02
https://atlas.cern/	html	58.2 KB	2026-10-02	2026-10-02
https://atlas.cern/about	html	47.8 KB	2026-09-24	current

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.

2026-10-02 first crawl

4 pages, 111 files, 2.1 MB; 20 libraries, 3 identifiers, 3 third-party hosts
20 libraries added
- gtag
- @vitest/utils 5.0.2
- jquery.flipster 1.1.6
- ovenplayer 0.10.54
- underscore 1.13.8
- @drupal/once 1.0.1
- @wix/design-system 1.328.0
- tabbable 6.5.0
- loadjs 4.3.0
- @bootcss/v3.bootcss.com 1.0.56
- js-cookie 3.0.8
- owlcarousel 1.3.3
- and 8 more
3 identifiers added
- UA-79806702-1 Universal Analytics property id
- 51j7GT9OEskA2UMGMSE0DqIXs3ZsQpFuJ-yJXQWHjII Google site verification
- LnSC4eOPWgFs8j_slMqfJnEqqbIFAa4_yMmG2B_ZfUw Google site verification
4 third-party hosts added
111 files added

Questions about atlas.cern

How does PageSourceSearch know what atlas.cern 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 atlas.cern 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 atlas.cern?: 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 atlas.cern?: 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.