How does PageSourceSearch know what probely-develop.vercel.app 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 probely-develop.vercel.app 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 probely-develop.vercel.app?

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 probely-develop.vercel.app?

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

probely-develop.vercel.app

Built with gtm, @clerk/ui 1.34.0, lottie-web 5.13.0, html2canvas 1.4.1, dashjs 5.2.1, @marimo-team/frontend 0.25.0, @inkeep/cxkit-js 0.5.119, @feathery/react 2.96.0, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, @segment/analytics-signals 2.4.5 and more. 5 pages and 171 stored files, last crawled 2026-10-03.

43 libraries 0 identifiers 58 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		2026-10-03
@clerk/ui	1.34.0	2026-10-03
lottie-web	5.13.0	2026-10-03
html2canvas	1.4.1	2026-10-03
dashjs	5.2.1	2026-10-03
@marimo-team/frontend	0.25.0	2026-10-03
@inkeep/cxkit-js	0.5.119	2026-10-03
@feathery/react	2.96.0	2026-10-03
@reachfive/identity-core	1.42.0	2026-10-03
@reachfive/identity-ui	2.1.0	2026-10-03
jspdf	4.2.1	2026-10-03
@segment/analytics-signals	2.4.5	2026-10-03
paulirish/lite-youtube-embed		2026-10-03
simplemde	1.11.2	2026-10-03
easymde	2.21.0	2026-10-03
socket.io	0.1.0	2026-10-03
face-age	2.4.6	2026-10-03
@scalar/api-reference	1.71.0	2026-10-03
@meowwolf/meowwolf-main	1.5.2	2026-10-03
@tolgee/web	7.2.1	2026-10-03
fusioncharts	4.2.2	2026-10-03
volantis-static	0.0.1761982841160	2026-10-03
artplayer-plugin-vast	1.0.0	2026-10-03
@chaindesk/embeds	1.0.245	2026-10-03
ovenplayer	0.10.54	2026-10-03
graphql-playground-react	1.7.28	2026-10-03
@recogito/annotorious	2.7.14	2026-10-03
@johanaarstein/dotlottie-player	1.5.23	2026-10-03
@feedmepos/mf-inventory-portal	1.7.17	2026-10-03
@builder.io/webcomponents	2.0.2	2026-10-03
@teipublisher/pb-components	3.6.8	2026-10-03
dmn-js	17.12.0	2026-10-03
@apollographql/graphql-playground-react	1.7.42	2026-10-03
@ant-design/x	2.9.0	2026-10-03
@widgetti/solara-vuetify-app	10.1.1	2026-10-03
@tsocial/tvweb-sdk	5.38.6	2026-10-03
cobrowse-sdk-js	3.28.7	2026-10-03
bulma-calendar	7.1.1	2026-10-03
@feedmepos/ui-library	1.10.17	2026-10-03
@everymatrix/player-profile-dashboard	1.21.0	2026-10-03
@formbird/angular-elements	8.5.10	2026-10-03
@pyscript/core	0.7.31	2026-10-03
@panoramax/web-viewer	5.3.0	2026-10-03

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 probely-develop.vercel.app 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
acme.com	connect	view source
analytics.google.com	connect	view source
api.iconify.design	connect	view source
api.pinterest.com	connect	view source
api.probely.com	connect	view source
api.sanity.io	connect	view source
api.simplesvg.com	connect	view source
api.tumblr.com	connect	view source
api.unisvg.com	connect	view source
api.vimeo.com	connect	view source
auth.plus.qa.probely.dev	connect	view source
b.hatena.ne.jp	connect	view source
bookmark.hatenaapis.com	connect	view source
cdn.jsdelivr.net	connect	view source
cdn.sanity.io	connect	view source
cdn.segment.com	connect	view source
connect.mail.ru	connect	view source
connect.ok.ru	connect	view source
developers.google.com	connect	view source
example.com	connect	view source
fonts.googleapis.com	connect	view source
gab.com	connect	view source
getpocket.com	connect	view source
github.com	connect	view source
graph.facebook.com	connect	view source
help.twitter.com	connect	view source
i1.ytimg.com	connect	view source
linkedin.com	connect	view source
maxcdn.bootstrapcdn.com	connect	view source
pinterest.com	connect	view source
plus.qa.probely.dev	connect	view source
purecatamphetamine.github.io	connect	view source
react-tweet.vercel.app	connect	view source
react.dev	connect	view source
registration.qa.probely.dev	connect	view source
sanity.io	connect	view source
service.weibo.com	connect	view source
social-plugins.line.me	connect	view source
telegram.me	connect	view source
twitter.com	connect	view source
use.typekit.net	connect	view source
va.vercel-scripts.com	connect	view source
vercel.live	connect	view source
vitals.vercel-insights.com	connect	view source
vk.com	connect	view source
work.facebook.com	connect	view source
www.facebook.com	connect	view source
www.google.com	connect	view source
www.googleapis.com	connect	view source
www.googletagmanager.com	iframe connect	view source
www.instapaper.com	connect	view source
www.livejournal.com	connect	view source
www.markdownguide.org	connect	view source
www.reddit.com	connect	view source
www.sanity.io	connect	view source
www.tumblr.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 171) }. 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://probely-develop.vercel.app/_next/static/chunks/9954.1d632d0219238ed6.js	js	4.7 KB	2026-10-03	2026-10-03
https://www.googletagmanager.com/gtm.js?id=	js library	not fetched	2026-10-03	2026-10-03
https://www.googletagmanager.com/gtm.js?id=GTM-M5222D3	js library	not fetched	2026-10-03	2026-10-03
https://probely-develop.vercel.app/_next/static/chunks/9845.c3f2d41277552411.js	js	17.9 KB	2026-10-03	2026-10-03
https://probely-develop.vercel.app/_next/static/chunks/9941.1aaf9fa34925b85b.js	js	841 B	2026-10-03	2026-10-03
https://probely-develop.vercel.app/_next/static/chunks/9639.5b0a837b552a566e.js	js	2.4 KB	2026-10-03	2026-10-03
https://probely-develop.vercel.app/_next/static/chunks/9551.b08c16fa022f7797.js	js	6.6 KB	2026-10-03	2026-10-03
https://probely-develop.vercel.app/_next/static/chunks/9303.98bda28f1050af58.js	js	341 B	2026-10-03	2026-10-03
https://probely-develop.vercel.app/_next/static/chunks/9146.2e3edcfdbb89a81a.js	js	5.1 KB	2026-10-03	2026-10-03
https://probely-develop.vercel.app/_next/static/chunks/9008.22395a7108b566d6.js	js	22.4 KB	2026-10-03	2026-10-03
https://probely-develop.vercel.app/_next/static/chunks/8886.149556b4bb7bbdfb.js	js	958 B	2026-10-03	2026-10-03
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https://probely-develop.vercel.app/_next/static/chunks/8464.b42c8fa2198497a7.js	js	5.6 KB	2026-10-03	2026-10-03
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https://probely-develop.vercel.app/about/	html	186.9 KB	2026-10-03	2026-10-03
https://probely-develop.vercel.app/pricing/	html	265.8 KB	2026-10-03	2026-10-03
https://probely-develop.vercel.app/blog/	html	254.1 KB	2026-10-03	2026-10-03
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https://probely-develop.vercel.app/	html	202.4 KB	2026-10-03	2026-10-03

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.

2026-10-03 first crawl

5 pages, 171 files, 6.3 MB; 43 libraries, 0 identifiers, 58 third-party hosts
43 libraries added
- @inkeep/cxkit-js 0.5.119
- @clerk/ui 1.34.0
- @segment/analytics-signals 2.4.5
- @feathery/react 2.96.0
- artplayer-plugin-vast 1.0.0
- socket.io 0.1.0
- @chaindesk/embeds 1.0.245
- bulma-calendar 7.1.1
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @reachfive/identity-ui 2.1.0
- ovenplayer 0.10.54
- and 31 more
59 third-party hosts added
- www.googletagmanager.com
- react.dev
- www.w3.org
- www.googletagmanager.com
- cdn.segment.com
- va.vercel-scripts.com
- acme.com
- www.sanity.io
- api.sanity.io
- cdn.sanity.io
- fonts.googleapis.com
- use.typekit.net
- and 47 more
171 files added

Questions about probely-develop.vercel.app

How does PageSourceSearch know what probely-develop.vercel.app 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 probely-develop.vercel.app 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 probely-develop.vercel.app?: 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 probely-develop.vercel.app?: 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.