How does PageSourceSearch know what intro.co 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 intro.co 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 intro.co?

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 intro.co?

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

intro.co

Built with gtm, @clerk/ui 1.34.0, libphonenumber-js 1.13.14, bowser 2.14.1, dashjs 5.2.1, @feathery/react 2.98.1, stripe-js 2.4.0, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, mixpanel-browser 2.83.0, @ffmpeg/core 0.12.9 and more. 5 pages and 168 stored files, last crawled 2026-10-02.

rank 468,598 40 libraries 4 identifiers 50 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
libphonenumber-js	1.13.14	2026-10-02
bowser	2.14.1	2026-10-02
dashjs	5.2.1	2026-10-02
@feathery/react	2.98.1	2026-10-02
stripe-js	2.4.0	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
mixpanel-browser	2.83.0	2026-10-02
@ffmpeg/core	0.12.9	2026-10-02
@sentry-internal/replay	10.57.0	2026-10-02
klaviyo		2026-10-02
face-age	2.4.6	2026-10-02
rollbar	3.1.0	2026-10-02
botframework-webchat	4.19.1	2026-10-02
@moveo-ai/web-client	0.117.0	2026-10-02
@flatfile/javascript	1.5.7	2026-10-02
ovenplayer	0.10.54	2026-10-02
graphql-playground-react	1.7.28	2026-10-02
@vitest/utils	5.0.2	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@daily-co/daily-js	0.92.2	2026-10-02
javascript-obfuscator	5.8.0	2026-10-02
@typeform/embed	6.0.0	2026-10-02
tripetto-services	2.1.1	2026-10-02
@collectionspace/cspace-public-browser	4.0.0	2026-10-02
@stytch/vanilla-js	6.3.0	2026-10-02
chat-engine	0.9.21	2026-10-02
@story-telling-reporter/react-embed-code-generator	2.2.20	2026-10-02
klaro	0.7.21	2026-09-24
contentful	11.12.10	2026-09-24
dynamsoft-barcode-reader-bundle	11.6.3200	2026-09-24
rss-parser	3.13.0	2026-09-24
jodit	4.15.13	2026-09-24
webex	3.12.0	2026-09-24
@opentok/client	2.35.2	2026-09-24
@crystaldesign/diva-web-planner-react	26.11.0	2026-09-24
@flarehr/benefits-app	0.0.2	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 Tag Manager container (Google)	GTM-TPPWW8V	view source
Intercom app id (Intercom)	g16v7frl	view source
Pinterest site verification (Pinterest)	30c9fcf51f2a10f6c360105ec5cc657f	view source
Sentry DSN host (Sentry)	o4508915905593344.ingest.us.sentry.io	view source

Third-party hosts

Hosts outside intro.co 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
accounts.google.com	connect	view source
acme.com	connect	view source
api-iam.intercom.io	connect	view source
api-js.mixpanel.com	connect	view source
api.stripe.com	connect	view source
app.contentful.com	connect	view source
apps.apple.com	connect	view source
browser.sentry-cdn.com	connect	view source
calendar.google.com	connect	view source
cdn.mxpnl.com	connect	view source
cdn.prod.website-files.com	script stylesheet	view source
d3e54v103j8qbb.cloudfront.net	script	view source
embed.typeform.com	connect	view source
example.com	connect	view source
femalefoundercollective.com	connect	view source
github.com	connect	view source
intro.local	connect	view source
jobs.ashbyhq.com	connect	view source
js.stripe.com	connect	view source
lexical.dev	connect	view source
magicmind.com	connect	view source
manage.kmail-lists.com	connect	view source
mixpanel.com	connect	view source
mockmind-api.uifaces.co	connect	view source
moneynewsnetwork.com	connect	view source
o447951.ingest.sentry.io	connect	view source
outlook.live.com	connect	view source
reactjs.org	connect	view source
sentry.io	connect	view source
services.adr.org	connect	view source
static.klaviyo.com	script	view source
stripe.com	connect	view source
the10thhouse.femalefoundercollective.com	connect	view source
twitter.com	connect	view source
unpkg.com	connect	view source
widget.intercom.io	connect	view source
www.aaamediation.org	connect	view source
www.adr.org	connect	view source
www.entrepreneur.com	connect	view source
www.facebook.com	connect	view source
www.googleapis.com	connect	view source
www.googletagmanager.com	iframe connect	view source
www.instagram.com	connect	view source
www.linkedin.com	connect	view source
www.pinterest.com	connect	view source
www.tiktok.com	connect	view source
www.treasury.gov	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 168) }. 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://static.klaviyo.com/onsite/js/klaviyo.js?company_id=WS2TRH	js library	not fetched	2026-10-02	current
https://unpkg.com/@ffmpeg/[email protected]/dist/umd/ffmpeg-core.js	js library	not fetched	2026-10-02	current
https://www.googletagmanager.com/gtm.js?id=	js library	not fetched	2026-10-02	current
https://intro.co/_next/static/chunks/6824-f5fd4de4dc253f9b.js	js	61 KB	2026-10-02	2026-10-02
https://intro.co/_next/static/chunks/7556-eff704c03b7756dd.js	js	43.9 KB	2026-10-02	2026-10-02
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https://intro.co/_next/static/chunks/pages/post/[postId]-23c5177197e74609.js	js	711 B	2026-10-02	current
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https://intro.co/_next/static/chunks/pages/_app-3da7b5b3763d282d.js	js	1017.4 KB	2026-10-02	2026-10-02
https://intro.co/_next/static/chunks/main-92f7d00224d1aae7.js	js	1020.1 KB	2026-10-02	2026-10-02
https://intro.co/_next/static/chunks/framework-c22e85c2fed1cdf3.js	js	136.9 KB	2026-10-02	current
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https://intro.co/_next/static/chunks/polyfills-42372ed130431b0a.js	js	110 KB	2026-10-02	current
https://intro.co/marketplace?openSearch=true	html	633.2 KB	2026-10-02	2026-10-02
https://intro.co/experts	html	38.8 KB	2026-10-02	current
https://intro.co/about	html	41.9 KB	2026-10-02	current
https://intro.co/login	html	6 KB	2026-10-02	2026-10-02
https://intro.co/	html	1 MB	2026-10-02	2026-10-02
https://intro.co/_next/static/chunks/3233-a69e409670b8f091.js	js	42.5 KB	2026-09-24	current
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https://intro.co/_next/static/chunks/2342-7b765ad1416c2d46.js	js	10.4 KB	2026-09-24	current
https://intro.co/_next/static/chunks/pages/[slug]-b973696453facd9e.js	js	300.8 KB	2026-09-24	current
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https://intro.co/_next/static/chunks/pages/meeti…/reschedule-f5360059296af4ce.js	js	29.2 KB	2026-09-24	current
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https://intro.co/_next/static/chunks/pages/lp/[slug]-4b05316c8611b74f.js	js	59.2 KB	2026-09-24	current
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https://intro.co/_next/static/chunks/880ffbe8.1de774be5e6d7712.js	js	2.4 MB	2026-09-24	current
https://intro.co/_next/static/chunks/pages/marketplace-47251eef1e6cbb61.js	js	28.8 KB	2026-09-24	current
https://intro.co/_next/static/ICM4kcBVYpMbub-Qe3yOa/_ssgManifest.js	js	167 B	2026-09-24	current
https://intro.co/_next/static/ICM4kcBVYpMbub-Qe3yOa/_buildManifest.js	js	9.6 KB	2026-09-24	current
https://intro.co/_next/static/chunks/pages/_app-f5e57e4ffcf0d0c5.js	js	1017.3 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, 132 files, 8.3 MB; 31 libraries, 4 identifiers, 50 third-party hosts
31 libraries added
- gtm
- @vitest/utils 5.0.2
- 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
- @clerk/ui 1.34.0
- @story-telling-reporter/react-embed-code-generator 2.2.20
- @stytch/vanilla-js 6.3.0
- and 19 more
4 identifiers added
- GTM-TPPWW8V Google Tag Manager container
- 30c9fcf51f2a10f6c360105ec5cc657f Pinterest site verification
- o4508915905593344.ingest.us.sentry.io Sentry DSN host
- g16v7frl Intercom app id
52 third-party hosts added
132 files added

Questions about intro.co

How does PageSourceSearch know what intro.co 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 intro.co 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 intro.co?: 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 intro.co?: 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.