How does PageSourceSearch know what casuu.com 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 casuu.com 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 casuu.com?

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 casuu.com?

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

casuu.com

Built with gather-vue 8.20.3, @comscore/analytics 7.15.0, @eka-care/medassist-widget 0.1.131, jspdf 4.2.1, @cdek-it/widget 4.0.0, @dropins/tools 2.1.0, @veltdev/sdk 6.0.14, pdfobject 2.1.1, cloudflare-insights, @epigraph/configurator 2.7.0, @alfatech/livechat 2026.9.0-9.2, @imshaiksaif/webflow-marquee 3.0.1 and more. 1 page and 152 stored files, last crawled 2026-10-05.

rank 11,439,674 24 libraries 0 identifiers 34 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
gather-vue	8.20.3	2026-10-05
@comscore/analytics	7.15.0	2026-10-05
@eka-care/medassist-widget	0.1.131	2026-10-05
jspdf	4.2.1	2026-10-05
@cdek-it/widget	4.0.0	2026-10-05
@dropins/tools	2.1.0	2026-10-05
@veltdev/sdk	6.0.14	2026-10-05
pdfobject	2.1.1	2026-10-05
cloudflare-insights		2026-10-05
@epigraph/configurator	2.7.0	2026-10-05
@alfatech/livechat	2026.9.0-9.2	2026-10-05
@imshaiksaif/webflow-marquee	3.0.1	2026-10-05
@feedmepos/mf-inventory-portal	1.7.17	2026-10-05
@bikematrix/web-components	1.3.23	2026-10-05
@flowbase-co/boosters-gsap	3.12.7	2026-10-05
@engine-web/website	0.7.13	2026-10-05
@digital-realty/ui-service-management	16.0.3	2026-10-05
@perceptimagery/dita-configurator	1.3.24	2026-10-05
@myparcel/delivery-options	6.22.0	2026-10-05
@feedmepos/mf-brand-app-builder	0.5.48-prod	2026-10-05
@feedmepos/ui-library	1.10.17	2026-10-05
@timely-chatbot/widget	0.3.1	2026-10-05
@genpact/genome.mfe.mgtwin-app	1.1.101	2026-10-05
@twinalyze/web-analytics	1.0.26	2026-10-05

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 casuu.com 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
cal.eu	connect	view source
cdnjs.cloudflare.com	connect	view source
evangelisches-krankenhaus-alsterdorf.de	connect	view source
github.com	connect	view source
i.imgur.com	connect	view source
imagedelivery.net	connect	view source
jspdf.default.namespaceuri	connect	view source
plausible.io	connect	view source
startupport.de	connect	view source
static.cloudflareinsights.com	script	view source
tally.so	connect	view source
vuejs.org	connect	view source
www.aistartuphub.com	connect	view source
www.alfa-care.de	connect	view source
www.alsterdorf.de	connect	view source
www.awo-bielefeld.de	connect	view source
www.bendula-consulting.com	connect	view source
www.cornelsen.de	connect	view source
www.de.digital	connect	view source
www.diwish.de	connect	view source
www.example.com	connect	view source
www.faire-anwerbung-pflege-deutschland.de	connect	view source
www.hamburg.de	connect	view source
www.ifbhh.de	connect	view source
www.imove-germany.de	connect	view source
www.krankenhaus-buchholz.de	connect	view source
www.krankenhaus-winsen.de	connect	view source
www.landkreis-harburg.de	connect	view source
www.passage.hamburg	connect	view source
www.sana.de	connect	view source
www.skk-kiel.de	connect	view source
www.uke.de	connect	view source
www.w3.org	connect	view source
www.waldklinik-jesteburg.de	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 152) }. 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://casuu.com/assets/ScrollTrigger-w8afAPmt.js	js	43.5 KB	2026-10-05	2026-10-05
https://cdnjs.cloudflare.com/ajax/libs/pdfobject/2.1.1/pdfobject.min.js	js library	not fetched	2026-10-05	2026-10-05
https://static.cloudflareinsights.com/beacon.min…85bb4c19e7a9bdbcba1788362987495	js library	not fetched	2026-10-05	2026-10-05
https://casuu.com/assets/SafetyAndSeals-Cku1Tb-T.js	js	6.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/FooterNew-B5zkuEU7.js	js	778 B	2026-10-05	2026-10-05
https://casuu.com/assets/FAQ-CLKw28Ff.js	js	7.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Research-4BSC6eJl.js	js	2.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Testimonial-CGo2__Mj.js	js	2.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Benefits-giPGdRR_.js	js	4.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Features-C8sCNH1p.js	js	6.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/vue3-lottie.es-54FqH7Yw.js	js	171.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/plausible-BdB2oT68.js	js	6.5 KB	2026-10-05	2026-10-05
https://casuu.com/assets/constants-D_kHi1T9.js	js	721 B	2026-10-05	2026-10-05
https://casuu.com/assets/infiniteQueryOptions-bv2Il1Cn.js	js	415 B	2026-10-05	2026-10-05
https://casuu.com/assets/useMutation-DNBJ-pVJ.js	js	6.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/StickyCtaMobile.vue_vue…ipt_setup_true_lang-D60lcQGJ.js	js	1.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/useQuery-DiAFZXrA.js	js	23.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/sdk.gen-CMuDM-TE.js	js	115.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/useCurrentUser-CCnYqwLd.js	js	5.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/useGsap-uKoe1DJ3.js	js	1.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/WaitlistToast.vue_vue_t…ipt_setup_true_lang-BEkStP0W.js	js	10.5 KB	2026-10-05	2026-10-05
https://casuu.com/assets/useCasuuPlausible-v6Dkebys.js	js	1.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CtaCard.vue_vue_type_script_setup_true_lang-B9kz9isQ.js	js	3.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/useScrollPosition-BDZEbX2X.js	js	975 B	2026-10-05	2026-10-05
https://casuu.com/assets/cta-CpJ26mfY.js	js	443 B	2026-10-05	2026-10-05
https://casuu.com/assets/useLandingScroll-DtLJg-97.js	js	565 B	2026-10-05	2026-10-05
https://casuu.com/assets/LandingNew-D5LEPjl1.js	js	27.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/index-Bi8gWjLH.js	js	7.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Logo-bw-CvUM2QlI.js	js	401 B	2026-10-05	2026-10-05
https://casuu.com/assets/Navbar.vue_vue_type_script_setup_true_lang-CZeDy0iE.js	js	10.5 KB	2026-10-05	2026-10-05
https://casuu.com/assets/workbox-window.prod.es5-CMmi5iDX.js	js	5.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/index-BpaE4vId.js	js	2.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/index.es-BH33qm63.js	js	146.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/purify.es-W9dNFw4b.js	js	31.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/html2canvas.esm-DumdEPIc.js	js	197.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/echo.worker-CGAGrZqu.js	js	30 KB	2026-10-05	2026-10-05
https://casuu.com/echo/pcm-capture.worklet.js	js	1.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/jspdf.es.min-BSIJS311.js	js	381.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/echoWorkerClient-BwVHEd7I.js	js	2.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/index-BJsOLARR.js	js	69 KB	2026-10-05	2026-10-05
https://casuu.com/sw-badge-handler.js	js	8.3 KB	2026-10-05	2026-10-05
https://casuu.com/sw.js	js	22 KB	2026-10-05	2026-10-05
https://casuu.com/assets/audioBlob.store-CaGxAqrF.js	js	2.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/EchoIdeasCard-ByudjESy.js	js	7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/echo.store-DAZcJuAg.js	js	21.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/index-DdZTMvNn.js	js	1.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/AuthorAssistantMount-BDkt2Iz1.js	js	15.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/EchoStatusPill-BkY3ARiF.js	js	1.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/html2canvas-pro.esm-BMP2T7Kw.js	js	225.5 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Reporting-CSj6_IF5.js	js	52.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/SurveyAdmin-BUvPu5yF.js	js	15.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Exercises-BE8F-Qw1.js	js	53.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Vocabularies-DuAtYdc8.js	js	10 KB	2026-10-05	2026-10-05
https://casuu.com/assets/OrganizationProgress-BJtILoVw.js	js	236.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ListUsers-Da_cw-XV.js	js	70.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Subscription-CaVh5w4D.js	js	56.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CourseEditor-BRGITnXt.js	js	111.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/LessonEditor-CpXuuTG-.js	js	38.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/EchoScrubEval-nAz30Xa5.js	js	27.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/client-B_X1kNaK.js	js	139.5 KB	2026-10-05	2026-10-05
https://casuu.com/assets/various-BLbJBw0L.js	js	2.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/EchoCapture-BXR9jhKk.js	js	25.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/vue-query.gen-Bz35qKMH.js	js	211.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/FspSimulation-DmAt49F3.js	js	69.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Speak-CP-SkFPO.js	js	55.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/UnifiedInbox-CStQ-BOK.js	js	133.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CourseForwarder-BUM08Sit.js	js	2.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Playground-BQnGV5Zc.js	js	25.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CourseViewer-Dcc-_W6r.js	js	53 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CourseDetailsNew-BCbEJ1xZ.js	js	26.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CaseInspection-9OYEhvZ_.js	js	14.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CreateNewCaseWithChatInterface-CDe_IXsT.js	js	3.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Achievements-2ufaAh_o.js	js	65.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/AdminVocabBaseline-0QDMUSQr.js	js	9.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ClinicWardProfile-B8_xsFQU.js	js	69.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ClinicProfile-DlMSFsF7.js	js	1.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/MyMentors-BHYzEzDn.js	js	6.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/GeneralSettings-ixTmxbri.js	js	31.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/LanguageSettings-CS_TJmHM.js	js	4.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/AccountSettings-DczwgivH.js	js	11.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Profile-Bdskcci8.js	js	14 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CaseInteraction-DdEgedLq.js	js	77.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/UserLearn-DkrzyUMe.js	js	32 KB	2026-10-05	2026-10-05
https://casuu.com/assets/LessonViewer-Btz3gXKl.js	js	27 KB	2026-10-05	2026-10-05
https://casuu.com/assets/VocabDashboard-CJuY_FN1.js	js	56.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/CourseLibraryNew-Db6PRtZG.js	js	9.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/LearnerCompanion-BM4ZbS1P.js	js	55.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/MenteeDetailLight-DThOYkH1.js	js	4.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ChallengeDetail-M2c8n6F8.js	js	7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/TutorChallenges-B8nrRGfk.js	js	13.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/TutorClinicProfile-DkfNYE2O.js	js	2.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/TutorVocab-DcZ6VNVE.js	js	22.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/TutorExercises-CpqdpVrp.js	js	24.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/TutorMenu-DBTBZHPl.js	js	4.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/MyLearners-C0B0pd8Y.js	js	11.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/TutorHome-B2GqaGYQ.js	js	61.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ChangePassword-BzJn0BOO.js	js	2.5 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ResetPasswordRequest-Cer8e_mJ.js	js	6.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ConfirmEmail-DzHWLEpB.js	js	2.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/UserHome-B3mid5FP.js	js	61.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/SmartRedirect-Bge9UHCy.js	js	4.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/SignIn-BBljVrTu.js	js	7.2 KB	2026-10-05	2026-10-05
https://casuu.com/assets/AcceptOrgInvite-gmrFKgvx.js	js	3.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/AcceptInvite-Cy8k1ipI.js	js	7.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/LoggedInRoot-ezJMnLVF.js	js	50.1 KB	2026-10-05	2026-10-05
https://casuu.com/assets/Layout-CcS4_xEl.js	js	657 B	2026-10-05	2026-10-05
https://casuu.com/assets/index-CgALkACZ.js	js	5.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/index-DrHYOMtP.js	js	5.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ita.survey-CLYxAP5e.js	js	2.4 KB	2026-10-05	2026-10-05
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https://casuu.com/assets/tur.survey-W_CN2D68.js	js	2.3 KB	2026-10-05	2026-10-05
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https://casuu.com/assets/ron-wL7_ntFW.js	js	100.6 KB	2026-10-05	2026-10-05
https://casuu.com/assets/ukr-CL-DfA2Q.js	js	130.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/hbs-BFuxUUc6.js	js	94.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/vie-CBPRkjCu.js	js	111.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/fil-6NLPlMKY.js	js	102 KB	2026-10-05	2026-10-05
https://casuu.com/assets/swh-4U4_uM25.js	js	95.7 KB	2026-10-05	2026-10-05
https://casuu.com/assets/por-DT5z_PiR.js	js	99.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/sqi-B4Vt8YpG.js	js	100.5 KB	2026-10-05	2026-10-05
https://casuu.com/assets/tur-B28c-a_U.js	js	97.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/fra-BVI6p4tB.js	js	102 KB	2026-10-05	2026-10-05
https://casuu.com/assets/spa-1KxHrbco.js	js	99.3 KB	2026-10-05	2026-10-05
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https://casuu.com/assets/tgk-BV0mKwOt.js	js	134.3 KB	2026-10-05	2026-10-05
https://casuu.com/assets/rus-CH__LluV.js	js	132.9 KB	2026-10-05	2026-10-05
https://casuu.com/assets/aeb-aknvOVVQ.js	js	112.4 KB	2026-10-05	2026-10-05
https://casuu.com/assets/arb-Cl5lfxCt.js	js	141.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/eng-CoP9bNds.js	js	122 KB	2026-10-05	2026-10-05
https://casuu.com/assets/deu-XhaBbVq4.js	js	130.8 KB	2026-10-05	2026-10-05
https://casuu.com/assets/main-icons-BlWfgvjm.js	js	221.5 KB	2026-10-05	2026-10-05
https://casuu.com/assets/sentryClient-DKgrWFjy.js	js	114 KB	2026-10-05	2026-10-05
https://casuu.com/assets/index-BhwxxRdE.js	js	278.7 KB	2026-10-05	2026-10-05
https://casuu.com/	html	39.6 KB	2026-10-05	2026-10-05

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.

2026-10-05 first crawl

1 page, 152 files, 6.7 MB; 24 libraries, 0 identifiers, 34 third-party hosts
24 libraries added
- @feedmepos/ui-library 1.10.17
- gather-vue 8.20.3
- @feedmepos/mf-brand-app-builder 0.5.48-prod
- @myparcel/delivery-options 6.22.0
- @cdek-it/widget 4.0.0
- @timely-chatbot/widget 0.3.1
- @feedmepos/mf-inventory-portal 1.7.17
- @eka-care/medassist-widget 0.1.131
- @digital-realty/ui-service-management 16.0.3
- @imshaiksaif/webflow-marquee 3.0.1
- @bikematrix/web-components 1.3.23
- @engine-web/website 0.7.13
- and 12 more
34 third-party hosts added
152 files added

Questions about casuu.com

How does PageSourceSearch know what casuu.com 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 casuu.com 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 casuu.com?: 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 casuu.com?: 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.