How does PageSourceSearch know what marksandspencer.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 marksandspencer.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 marksandspencer.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 marksandspencer.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

marksandspencer.com

Built with webpack, @clerk/ui 1.34.0, @scandit/web-datacapture-core 8.6.0, algoliasearch.zendesk-hc 3.0.0, gather-vue 8.20.3, dashjs 5.2.1, @inkeep/cxkit-js 0.5.119, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, oidc-client 1.11.5, exceljs 4.4.0 and more. 5 pages and 117 stored files, last crawled 2026-10-09.

30 libraries 0 identifiers 57 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
webpack		2026-10-09
@clerk/ui	1.34.0	2026-10-09
@scandit/web-datacapture-core	8.6.0	2026-10-09
algoliasearch.zendesk-hc	3.0.0	2026-10-09
gather-vue	8.20.3	2026-10-09
dashjs	5.2.1	2026-10-09
@inkeep/cxkit-js	0.5.119	2026-10-09
@reachfive/identity-core	1.42.0	2026-10-09
@reachfive/identity-ui	2.1.0	2026-10-09
jspdf	4.2.1	2026-10-09
oidc-client	1.11.5	2026-10-09
exceljs	4.4.0	2026-10-09
spectorjs	0.9.33	2026-10-09
@moveo-ai/web-client	0.117.0	2026-10-09
tdesign-react	1.18.3	2026-10-09
ovenplayer	0.10.54	2026-10-09
graphql-playground-react	1.7.28	2026-10-09
@recogito/annotorious	2.7.14	2026-10-09
@johanaarstein/dotlottie-player	1.5.23	2026-10-09
@machi-pla/ai-chatbot	0.1.25	2026-10-09
tonweb	0.0.66	2026-10-09
@accusoft/pdf-viewer	3.11.158639	2026-10-09
@ant-design/x	2.9.0	2026-10-09
mori-chat-widget	2.0.49	2026-10-09
wonder-image	2.1.2-alpha.4	2026-10-09
@joyfill/components	4.0.0-rc26	2026-10-09
@grapecity/gcpdfviewer	7.2.3	2026-10-09
machinelearn	2.1.5	2026-10-09
@chativa/connector-directline	0.15.0	2026-10-09
coherentpdf	2.5.5	2026-10-09

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 marksandspencer.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
aomedia.org	connect	view source
api.identity.marksandspencer.app	connect	view source
api.taggstar.com	connect	view source
assets.digitalcontent.marksandspencer.app	connect	view source
atlas.microsoft.com	connect	view source
ccr.imaaagery.app	connect	view source
cdn-igs-prd.conversity.com	connect	view source
cdn-pci.optimizely.com	script	view source
cdn.curalate.com	connect	view source
cdn.optimizely.com	connect	view source
dummyimage.com	connect	view source
edge.curalate.com	connect	view source
example.com	connect	view source
github.com	connect	view source
gqlfederation.localhost	connect	view source
images.ctfassets.net	connect	view source
js-cdn.dynatrace.com	script	view source
json-schema.org	connect	view source
logx.optimizely.com	connect	view source
mandsapp.onelink.me	connect	view source
mandstravelmoney.com	connect	view source
marksandspencer.invalid	connect	view source
marksandspencerforbusiness.com	connect	view source
mas-consumer.staging.truefitcorp.com	connect	view source
mas-consumer.truefitcorp.com	connect	view source
ms.loveslisa.tech	connect	view source
p11.techlab-cdn.com	connect	view source
pinterest.com	connect	view source
pr-xxx.azurewebsites.net	connect	view source
preproduction.api.identity.marksandspencer.app	connect	view source
react.dev	connect	view source
rtapi.foundit.com	connect	view source
schema.org	connect	view source
speedily-crowded-grackle.eu.pgsdemo.com	connect	view source
static.lisa-cdn.net	connect	view source
takeback.reskinned.clothing	connect	view source
twitter.com	connect	view source
videos.ctfassets.net	connect	view source
www.accessable.co.uk	connect	view source
www.clearpay.co.uk	connect	view source
www.facebook.com	connect	view source
www.instagram.com	connect	view source
www.linkedin.com	connect	view source
www.mandsopticians.com	connect	view source
www.marksandspencer.ae	connect	view source
www.marksandspencer.com.tr	connect	view source
www.marksandspencer.hk	connect	view source
www.marksandspencer.in	connect	view source
www.marksandspencer.my	connect	view source
www.marksandspencer.sg	connect	view source
www.marksandspencerme.com	connect	view source
www.ocado.com	connect	view source
www.paypal.com	connect	view source
www.pinterest.com	connect	view source
www.twitter.com	connect	view source
www.w3.org	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 117) }. 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
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https://www.marksandspencer.com/onyx-auth/asset/…/chunks/150-abcc6053eda0dda3.js	js	164.5 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…/bae3502c-805c7b4aa1a399e1.js	js	317.7 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…/http-auth-400bfe88775b8cf5.js	js	4.9 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…ql-example]-133b396617e96b8a.js	js	7.2 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…/chunks/866-06fc268232d80512.js	js	102 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…/colleague-a97ec531a52e18be.js	js	2.2 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…/[router]-de07032cba87cf5f.js	js	8.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…i-sureroute-110f7072c97ec6cf.js	js	374 B	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…/_error-e1b2fa7c24e36d96.js	js	221 B	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…/index-8495f67e73391fad.js	js	1.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/customer-help/as…/[subject]-8c177b0bb36087f9.js	js	19.4 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/customer-help/as…/[subject]-70593c569ce490d3.js	js	17.1 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/customer-help/as…and-support-2924e6ede03c365c.js	js	14.7 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/customer-help/as…/_error-65eba7f54552a4e9.js	js	273 B	2026-10-09	2026-10-09
https://www.marksandspencer.com/customer-help/as…/pages/500-ac062c8afb3558f6.js	js	5.9 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/customer-help/as…/pages/404-ea132ff60e864c47.js	js	5.8 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/customer-help/as…/index-2616822c68702024.js	js	10 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/2777.c016a871a3ebc0b1.js	js	2.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/chunks/138.bd8cad44913daaa4.js	js	65.4 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/8615.f563a6e9ecaddaa8.js	js	18.9 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/162013d4.c3e927a908547f08.js	js	496.1 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/7099.366f96e7164ba08e.js	js	66.5 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/chunks/74.0bb2bf1ca784f6d0.js	js	2.6 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/chunks/753.a2f922f54660a909.js	js	1 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/chunks/601.258b8cd3c9ab863c.js	js	135.9 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/4155.5d0e88c259d18cb6.js	js	104 B	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/chunks/628.367a30c976f5935f.js	js	4 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/7223-215d5ef576ea602e.js	js	43 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/chunks/765.6fd13a2173e3629e.js	js	6.2 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/2371-f5db449b59e70ec7.js	js	13.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/8391-c147b97b4c76e5e9.js	js	9.6 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/9588-13652aa5aa5c0ed1.js	js	25.5 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/3437-202c326bcbbaffb2.js	js	13 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/p/[id]-9ddfe3b9221c502c.js	js	1 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/[id]-3dd547bc3d5f93a9.js	js	5.4 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…ore-listing-0622539a2a58d457.js	js	24.4 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/search-0945b98ef1dea411.js	js	4.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…categories]-4cbaa6b94ecc0c0d.js	js	25.5 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…categories]-807edc49c8d11770.js	js	83.9 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/debug-b6529c202b8c54ba.js	js	15.4 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/[article]-4c1a3e10e7defb98.js	js	27.6 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…size-guides-d0111151edfb198b.js	js	1.7 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/mymarks-ebba0c784a150580.js	js	10.2 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…t-fit-guide-99fa8a0aab2bee38.js	js	28.2 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/mands-live-11c188a828d53cda.js	js	26.7 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…tion-policy-96054b7d9f7e2fad.js	js	23.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/[category]-2adb8e8136ab99c0.js	js	17.8 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/content-01f21d09d6dd0858.js	js	15.1 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/[author]-fff3147bc2be965b.js	js	6.6 KB	2026-10-09	2026-10-09
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https://www.marksandspencer.com/browse/asset/_ne…m-fit-guide-856f54e97bfbfd9c.js	js	15.5 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…ir-of-jeans-fa7856544a39e54a.js	js	7.2 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/reskinned-e0a25105af3cf3c8.js	js	5.2 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…size-guides-82fbba982373af53.js	js	13.6 KB	2026-10-09	2026-10-09
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https://www.marksandspencer.com/browse/asset/_ne…cal-reality-3b02e1da5c23d618.js	js	25.1 KB	2026-10-09	2026-10-09
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https://www.marksandspencer.com/onyx-auth/asset/…/pages/_app-f293a7e319873c3a.js	js	381.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/onyx-auth/asset/…/main-bbc6202ad2e3c7fe.js	js	155.4 KB	2026-10-09	2026-10-09
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https://www.marksandspencer.com/browse/asset/_ne…/7565-51d19692c09efdcb.js	js	8.1 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/1116-71c53de9f5bb6537.js	js	15.2 KB	2026-10-09	2026-10-09
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https://www.marksandspencer.com/browse/asset/_ne…/7751-d0aee031b8797cd4.js	js	21 KB	2026-10-09	2026-10-09
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https://www.marksandspencer.com/browse/asset/_ne…/4550-d0b56d8210d209c7.js	js	17.6 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/3420-4efaf5a1a1cb14f3.js	js	15.2 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/pages/_app-05d09844427ceadb.js	js	1004.6 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/main-e330f102ea879245.js	js	147.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/framework-2de1c1ddccab432d.js	js	185.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/webpack-931178e66b8c0258.js	js	6.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/browse/asset/_ne…/polyfills-42372ed130431b0a.js	js	110 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/public/b931391c2…ac6f7a162ea10263e70bc001213761b	js	266.8 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/l/lingerie/bras/post-surgery-bras	html	1003.6 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/webapp/wcs/store…=1&intid=header_sign-in_sign-in	html	4.7 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/l/women/holiday-shop	html	1.4 MB	2026-10-09	2026-10-09
https://www.marksandspencer.com/help-and-support/products-and-brands-information	html	871.3 KB	2026-10-09	2026-10-09
https://www.marksandspencer.com/	html	557 KB	2026-10-09	2026-10-09

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.

2026-10-09 first crawl

5 pages, 117 files, 11.2 MB; 30 libraries, 0 identifiers, 57 third-party hosts
30 libraries added
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @reachfive/identity-ui 2.1.0
- ovenplayer 0.10.54
- @recogito/annotorious 2.7.14
- dashjs 5.2.1
- graphql-playground-react 1.7.28
- @moveo-ai/web-client 0.117.0
- @ant-design/x 2.9.0
- @inkeep/cxkit-js 0.5.119
- @clerk/ui 1.34.0
- @joyfill/components 4.0.0-rc26
- and 18 more
57 third-party hosts added
117 files added

Questions about marksandspencer.com

How does PageSourceSearch know what marksandspencer.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 marksandspencer.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 marksandspencer.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 marksandspencer.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.