How does PageSourceSearch know what lightyear.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 lightyear.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 lightyear.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 lightyear.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

lightyear.com

Built with gtm, @clerk/ui 1.34.0, lottie-web 5.13.0, dashjs 5.2.1, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, @cognigy/webchat 3.50.0, plausible, paulirish/lite-youtube-embed, @brainfish-ai/nudge-widget 0.1.3, @recogito/annotorious 2.7.14 and more. 5 pages and 159 stored files, last crawled 2026-10-02.

rank 583,113 22 libraries 1 identifier 29 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
gtm		2026-10-02
@clerk/ui	1.34.0	2026-10-02
lottie-web	5.13.0	2026-10-02
dashjs	5.2.1	2026-10-02
@reachfive/identity-core	1.42.0	2026-10-02
@reachfive/identity-ui	2.1.0	2026-10-02
jspdf	4.2.1	2026-10-02
@cognigy/webchat	3.50.0	2026-10-02
plausible		2026-10-02
paulirish/lite-youtube-embed		2026-10-02
@brainfish-ai/nudge-widget	0.1.3	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@johanaarstein/dotlottie-player	1.5.23	2026-10-02
@betterbugs/web-sdk	0.0.47	2026-10-02
@ant-design/x	2.9.0	2026-10-02
@inkeep/agents-ui-js-cloud	0.17.8	2026-10-02
@solace-health/solace-entry-widget	2.0.5	2026-10-02
d3	7.9.0	2026-09-24
@lottiefiles/lottie-player	2.0.12	2026-09-24
kore-web-sdk	11.28.1	2026-09-24
spectorjs	0.9.33	2026-09-24
@moveo-ai/web-client	0.117.0	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
Facebook domain verification (Meta)	gja908ksjh7rtaer8e3un99oml2471	view source

Third-party hosts

Hosts outside lightyear.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
ad.doubleclick.net	connect	view source
ade.googlesyndication.com	connect	view source
adservice.google.com	connect	view source
analytics.google.com	connect	view source
apps.apple.com	connect	view source
base-ui.com	connect	view source
cct.google	connect	view source
cdn.jsdelivr.net	connect	view source
d20xtzwzcl0ceb.cloudfront.net	connect	view source
d3uc069fcn7uxw.cloudfront.net	connect	view source
developers.google.com	connect	view source
docs.datadoghq.com	connect	view source
github.com	connect	view source
hatscripts.github.io	connect	view source
json-schema.org	connect	view source
lightyear.app.link	connect	view source
m.youtube.com	connect	view source
pagead2.googlesyndication.com	connect	view source
play.google.com	connect	view source
react.dev	connect	view source
reactjs.org	connect	view source
schema.org	connect	view source
www.datad0g-browser-agent.com	connect	view source
www.datadoghq-browser-agent.com	connect	view source
www.google.com	connect	view source
www.googleadservices.com	connect	view source
www.googletagmanager.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 159) }. 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://plausible.io/js/pa-HXC7_xaZIY35qfZPgN2Z_.js	js library	not fetched	2026-10-02	current
https://www.googletagmanager.com/gtm.js	js library	not fetched	2026-10-02	current
https://lightyear.com/_next/static/bjQHPvvBELRjgoCbiFycP/_buildManifest.js	js	5.2 KB	2026-10-02	2026-10-02
https://lightyear.com/_next/static/chunks/2104kx0hpfosd.js	js	10.9 KB	2026-10-02	2026-10-02
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https://lightyear.com/_next/static/chunks/1x_l97wk79st-.js	js	34.5 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/0zjnmf14_xc_o.js	js	16.4 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/3h-pshva511kh.js	js	27.3 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/2pu5gsvbxrxy6.js	js	766 B	2026-09-24	current
https://lightyear.com/_next/static/chunks/25zk1tea635f3.js	js	15.3 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/15xto9ejmxlyw.js	js	13.6 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/turbopack-0giuivfjel0v7.js	js	10.9 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/3xoh1x48tfyo5.js	js	141.4 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/3ex9q17df62i9.js	js	227.1 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/2_0ur_z9er6fv.js	js	138.1 KB	2026-09-24	current
https://lightyear.com/_next/static/chunks/1nmynbqa-fhmx.js	js	294.8 KB	2026-09-24	current
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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.

2026-10-02 first crawl

5 pages, 82 files, 6.8 MB; 17 libraries, 1 identifier, 29 third-party hosts
17 libraries added
- @inkeep/agents-ui-js-cloud 0.17.8
- @clerk/ui 1.34.0
- @ant-design/x 2.9.0
- @brainfish-ai/nudge-widget 0.1.3
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @recogito/annotorious 2.7.14
- dashjs 5.2.1
- @reachfive/identity-ui 2.1.0
- @cognigy/webchat 3.50.0
- @betterbugs/web-sdk 0.0.47
- @johanaarstein/dotlottie-player 1.5.23
- and 5 more
1 identifier added
- gja908ksjh7rtaer8e3un99oml2471 Facebook domain verification
29 third-party hosts added
82 files added

Questions about lightyear.com

How does PageSourceSearch know what lightyear.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 lightyear.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 lightyear.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 lightyear.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.