How does PageSourceSearch know what langbuddy.ai 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 langbuddy.ai 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 langbuddy.ai?

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 langbuddy.ai?

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

langbuddy.ai

Built with webpack, @clerk/ui 1.34.0, gather-vue 8.20.3, d3 7.9.0, onnxruntime-web 1.30.0, dashjs 5.2.1, @marimo-team/frontend 0.25.0, @duckdb/duckdb-wasm 1.33.1-dev57.0, @feathery/react 2.98.1, tiktok-pixel, facebook-pixel, @reachfive/identity-core 1.42.0 and more. 5 pages and 127 stored files, last crawled 2026-10-05.

rank 13,879,121 45 libraries 3 identifiers 37 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		2026-10-05
@clerk/ui	1.34.0	2026-10-05
gather-vue	8.20.3	2026-10-05
d3	7.9.0	2026-10-05
onnxruntime-web	1.30.0	2026-10-05
dashjs	5.2.1	2026-10-05
@marimo-team/frontend	0.25.0	2026-10-05
@duckdb/duckdb-wasm	1.33.1-dev57.0	2026-10-05
@feathery/react	2.98.1	2026-10-05
tiktok-pixel		2026-10-05
facebook-pixel		2026-10-05
@reachfive/identity-core	1.42.0	2026-10-05
@reachfive/identity-ui	2.1.0	2026-10-05
jspdf	4.2.1	2026-10-05
@cognigy/webchat	3.50.0	2026-10-05
oidc-client	1.11.5	2026-10-05
@xenova/transformers	2.17.2	2026-10-05
exceljs	4.4.0	2026-10-05
hotjar		2026-10-05
@desivocal/agents-cdn	1.0.21	2026-10-05
@adalong/widget	7.15.1	2026-10-05
adp-web-components	0.4.4	2026-10-05
artplayer-plugin-vast	1.0.0	2026-10-05
ovenplayer	0.10.54	2026-10-05
webtorrent	3.0.21	2026-10-05
graphql-playground-react	1.7.28	2026-10-05
@recogito/annotorious	2.7.14	2026-10-05
replaywebpage	2.5.3	2026-10-05
@magenta/music	1.23.1	2026-10-05
@formio/js	5.6.1	2026-10-05
tonweb	0.0.66	2026-10-05
@okta/okta-auth-js	8.0.1	2026-10-05
@accusoft/pdf-viewer	3.11.158639	2026-10-05
bunny-skia	0.0.13	2026-10-05
mori-chat-widget	2.0.49	2026-10-05
@stytch/vanilla-js	6.3.0	2026-10-05
@linways/table-to-excel	1.0.4	2026-10-05
@tsocial/tvweb-sdk	5.38.6	2026-10-05
@isle-project/dll	0.50.65	2026-10-05
@okta/okta-signin-widget	7.49.1	2026-10-05
wonder-image	2.1.2-alpha.4	2026-10-05
machinelearn	2.1.5	2026-10-05
@chativa/connector-directline	0.15.0	2026-10-05
@twinalyze/web-analytics	1.0.26	2026-10-05
coherentpdf	2.5.5	2026-10-05

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
Meta pixel id (Meta)	3624068164504485	view source
Hotjar site id (Hotjar)	3579009	view source
X (Twitter) pixel id (X)	oeexk	view source

Third-party hosts

Hosts outside langbuddy.ai 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
analytics.tiktok.com	connect	view source
ankiweb.net	connect	view source
api.qrserver.com	connect	view source
app-eu1.hubspot.com	connect	view source
app.posthog.com	connect	view source
cdn-icons-png.flaticon.com	connect	view source
chat.whatsapp.com	connect	view source
connect.facebook.net	connect	view source
dashboard.stripe.com	connect	view source
eu.posthog.com	connect	view source
feline-twist-35a.notion.site	connect	view source
fonts.googleapis.com	connect	view source
fonts.gstatic.com	connect	view source
forms.gle	connect	view source
github.com	connect	view source
instagram.com	connect	view source
js.stripe.com	connect	view source
mui.com	connect	view source
pi.ai	connect	view source
purecatamphetamine.github.io	connect	view source
reactjs.org	connect	view source
schema.org	connect	view source
sentry.io	connect	view source
static.ads-twitter.com	connect	view source
static.hotjar.com	connect	view source
stripe.com	connect	view source
upload.wikimedia.org	connect	view source
us.i.posthog.com	connect	view source
us.posthog.com	connect	view source
use.typekit.net	connect	view source
vercel.live	connect	view source
w.soundcloud.com	connect	view source
wa.me	connect	view source
www.facebook.com	connect	view source
www.googletagmanager.com	connect	view source
www.w3.org	connect	view source
yandex.com	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 127) }. 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://connect.facebook.net/en_US/fbevents.js	js library	not fetched	2026-10-05	2026-10-05
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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.

2026-10-05 first crawl

5 pages, 127 files, 4 MB; 45 libraries, 3 identifiers, 37 third-party hosts
45 libraries added
- hotjar
- facebook-pixel
- 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
- @cognigy/webchat 3.50.0
- @adalong/widget 7.15.1
- and 33 more
3 identifiers added
- 3579009 Hotjar site id
- 3624068164504485 Meta pixel id
- oeexk X (Twitter) pixel id
37 third-party hosts added
- github.com
- vercel.live
- reactjs.org
- www.w3.org
- fonts.googleapis.com
- fonts.gstatic.com
- use.typekit.net
- schema.org
- yandex.com
- sentry.io
- app.posthog.com
- us.i.posthog.com
- and 25 more
127 files added

Questions about langbuddy.ai

How does PageSourceSearch know what langbuddy.ai 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 langbuddy.ai 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 langbuddy.ai?: 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 langbuddy.ai?: 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.