How does PageSourceSearch know what systemdesignschool.io 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 systemdesignschool.io 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 systemdesignschool.io?

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 systemdesignschool.io?

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

systemdesignschool.io

Built with @clerk/ui 1.34.0, mermaid 12.0.0, @findify/bundle 7.1.108, d3 7.9.0, @blotoutio/providers-blotout-consent-sdk 1.73.0, @marimo-team/frontend 0.25.0, tinymce 8.9.2, @typebot.io/js 0.10.11, @feathery/react 2.96.0, recharts 3.10.1, @cognigy/webchat 3.50.0, pdf-lib 1.17.1 and more. 5 pages and 135 stored files, last crawled 2026-10-04.

rank 1,987,105 62 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
@clerk/ui	1.34.0	2026-10-04
mermaid	12.0.0	2026-10-04
@findify/bundle	7.1.108	2026-10-04
d3	7.9.0	2026-10-04
@blotoutio/providers-blotout-consent-sdk	1.73.0	2026-10-04
@marimo-team/frontend	0.25.0	2026-10-04
tinymce	8.9.2	2026-10-04
@typebot.io/js	0.10.11	2026-10-04
@feathery/react	2.96.0	2026-10-04
recharts	3.10.1	2026-10-04
@cognigy/webchat	3.50.0	2026-10-04
pdf-lib	1.17.1	2026-10-04
@codesandbox/sandpack-client	2.19.8	2026-10-04
tableexport.jquery.plugin	1.33.0	2026-10-04
twitter-widgets		2026-10-04
@farcaster/miniapp-sdk	0.3.0	2026-10-04
reveal.js	6.0.2	2026-10-04
luckysheet	2.1.13	2026-10-04
d3-zoom	3.0.0	2026-10-04
universalviewer	4.4.4	2026-10-04
@adalong/widget	7.15.1	2026-10-04
@scalar/api-reference	1.71.0	2026-10-04
@aurolabs/auro-back-to-top	1.1.0	2026-10-04
@tolgee/web	7.2.1	2026-10-04
@elevenlabs/convai-widget-embed	0.18.2	2026-10-04
vditor	4.0.0	2026-10-04
tdesign-react	1.18.3	2026-10-04
alasql	4.19.1	2026-10-04
@oiz/stzh-components	4.16.0	2026-10-04
artplayer-plugin-vast	1.0.0	2026-10-04
cytoscape	3.34.3	2026-10-04
filterizr	2.2.4	2026-10-04
docs-searchbar.js	2.5.0	2026-10-04
ogm-viewer	1.4.0	2026-10-04
@figmania/loader	3.3.10	2026-10-04
recharts-scale	0.4.5	2026-10-04
@excalidraw/excalidraw	0.18.1	2026-10-04
@sledge-app/js	2.0.114	2026-10-04
highlightjs	9.16.2	2026-10-04
@formio/js	5.6.1	2026-10-04
@descope/web-components-ui	3.21.0	2026-10-04
@teipublisher/pb-components	3.6.8	2026-10-04
dmn-js	17.12.0	2026-10-04
@stlite/browser	1.9.2	2026-10-04
@ant-design/x	2.9.0	2026-10-04
@prefecthq/prefab-ui	0.20.2	2026-10-04
@widgetti/solara-vuetify-app	10.1.1	2026-10-04
@stytch/vanilla-js	6.3.0	2026-10-04
@tsocial/tvweb-sdk	5.38.6	2026-10-04
cobrowse-sdk-js	3.28.7	2026-10-04
phaser3-rex-plugins	1.80.20	2026-10-04
@okta/okta-signin-widget	7.49.1	2026-10-04
@formbird/angular-elements	8.5.10	2026-10-04
@joyfill/components	4.0.0-rc26	2026-10-04
@percy.ai/hvs-funnel-overlay	0.5.13	2026-10-04
@percy.ai/your-team	1.1.10	2026-10-04
comindware.core.ui	2.1.149	2026-10-04
@pyscript/core	0.7.31	2026-10-04
hexo-theme-redefine	2.9.0	2026-10-04
@chainlink/cl-search-frontend	0.13.2	2026-10-04
alist-web	3.55.0	2026-10-04
@pydantic/ai-chat-ui	2.3.0	2026-10-04

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 systemdesignschool.io 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
api.eu.amplitude.com	connect	view source
api.statsigcdn.com	connect	view source
api2.amplitude.com	connect	view source
apis.google.com	connect	view source
app.excalidraw.com	connect	view source
app.formbricks.com	connect	view source
blog.excalidraw.com	connect	view source
cdn.jsdelivr.net	connect	view source
cdn.trackdesk.com	script	view source
cloudflare-dns.com	connect	view source
discord.gg	connect	view source
docs.excalidraw.com	connect	view source
excalidraw-room-persistence.firebaseio.com	connect	view source
excalidraw.com	connect	view source
featureassets.org	connect	view source
firebaseinstallations.googleapis.com	connect	view source
firebaseremoteconfig.googleapis.com	connect	view source
fonts.googleapis.com	connect	view source
giphy.com	connect	view source
github.com	connect	view source
json-schema.org	connect	view source
json.excalidraw.com	connect	view source
libraries.excalidraw.com	connect	view source
mermaid.js.org	connect	view source
platform.twitter.com	connect	view source
player.vimeo.com	connect	view source
plus.excalidraw.com	connect	view source
portal.excalidraw.com	connect	view source
prodregistryv2.org	connect	view source
reactflow.dev	connect	view source
reactjs.org	connect	view source
schema.org	connect	view source
securetoken.google.com	connect	view source
static.hotjar.com	connect	view source
statsigapi.net	connect	view source
system-design-school.trackdesk.com	connect	view source
twitter.com	connect	view source
unpkg.com	connect	view source
us-central1-excalidraw-room-persistence.cloudfunctions.net	connect	view source
use.typekit.net	connect	view source
va.vercel-scripts.com	connect	view source
vercel.live	connect	view source
www.businessinsider.com	connect	view source
www.clarity.ms	connect	view source
www.dwin1.com	connect	view source
www.eclipse.org	connect	view source
www.figma.com	connect	view source
www.google.com	connect	view source
www.googleapis.com	connect	view source
www.googletagmanager.com	connect	view source
www.gstatic.com	connect	view source
www.ibm.com	connect	view source
www.linkedin.com	connect	view source
www.sitemaps.org	connect	view source
www.w3.org	connect	view source
www.youtube.com	iframe connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 135) }. 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://systemdesignschool.io/_next/static/chunks/4ad82c5e-a509950cdba8d010.js	js	187 KB	2026-10-04	current
https://systemdesignschool.io/_next/static/chunks/5675-27c9d131bba2547e.js	js	7.6 KB	2026-10-04	current
https://systemdesignschool.io/_next/static/chunks/pages/_app-650b1ac56eaf2994.js	js	601.7 KB	2026-10-04	2026-10-04
https://systemdesignschool.io/_next/static/chunks/main-80aeb267509ae1bb.js	js	85.6 KB	2026-10-04	current
https://systemdesignschool.io/_next/static/chunks/framework-2fe4cb6473b20297.js	js	137.8 KB	2026-10-04	current
https://systemdesignschool.io/_next/static/chunks/webpack-7bcf7e82f84166ee.js	js	7.5 KB	2026-10-04	2026-10-04
https://systemdesignschool.io/_next/static/chunks/polyfills-c67a75d1b6f99dc8.js	js	89.3 KB	2026-10-04	current
https://systemdesignschool.io/courses	html	15.1 KB	2026-10-04	2026-10-04
https://systemdesignschool.io/pricing	html	14.1 KB	2026-10-03	2026-10-04
https://systemdesignschool.io/blog	html	45.9 KB	2026-10-03	2026-10-04
https://systemdesignschool.io/fundamentals/full-text-search-database	html	56.3 KB	2026-10-03	2026-10-04
https://systemdesignschool.io/	html	144.3 KB	2026-10-03	2026-10-04
https://systemdesignschool.io/_next/static/chunks/5963-a6f601a06600f53b.js	js	19.1 KB	2026-09-25	current
https://systemdesignschool.io/_next/static/chunk…/[part]-afabe2738e366c31.js	js	20.3 KB	2026-09-25	current
https://systemdesignschool.io/_next/static/chunk…submissions-56e42371a19e5fdc.js	js	25.2 KB	2026-09-25	current
https://systemdesignschool.io/_next/static/chunk…/problems-17332204c504fc8a.js	js	23.7 KB	2026-09-25	current
https://systemdesignschool.io/_next/static/chunks/3221-9c5f1bbdf7157048.js	js	299.4 KB	2026-09-25	current
https://systemdesignschool.io/_next/static/chunk…/[id]-71b7d58eb7a298c4.js	js	12.4 KB	2026-09-25	current
https://systemdesignschool.io/_next/static/-W5-yZEiVRtF2_0fLOSRx/_ssgManifest.js	js	158 B	2026-09-25	current
https://systemdesignschool.io/_next/static/-W5-y…/_buildManifest.js	js	5.9 KB	2026-09-25	current
https://systemdesignschool.io/_next/static/chunks/pages/_app-9a5146a07706435b.js	js	601.7 KB	2026-09-25	current
https://systemdesignschool.io/_next/static/chunks/webpack-d068bd3f113f9ade.js	js	7.4 KB	2026-09-25	current

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.

2026-10-04 first crawl

5 pages, 125 files, 10.9 MB; 62 libraries, 0 identifiers, 57 third-party hosts
62 libraries added
- tableexport.jquery.plugin 1.33.0
- comindware.core.ui 2.1.149
- @findify/bundle 7.1.108
- @aurolabs/auro-back-to-top 1.1.0
- @oiz/stzh-components 4.16.0
- docs-searchbar.js 2.5.0
- @clerk/ui 1.34.0
- @cognigy/webchat 3.50.0
- @feathery/react 2.96.0
- @sledge-app/js 2.0.114
- @adalong/widget 7.15.1
- @typebot.io/js 0.10.11
- and 50 more
58 third-party hosts added
- cdn.trackdesk.com
- www.youtube.com
- vercel.live
- reactjs.org
- www.w3.org
- fonts.googleapis.com
- use.typekit.net
- www.google.com
- apis.google.com
- securetoken.google.com
- static.hotjar.com
- api2.amplitude.com
- and 46 more
125 files added

Questions about systemdesignschool.io

How does PageSourceSearch know what systemdesignschool.io 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 systemdesignschool.io 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 systemdesignschool.io?: 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 systemdesignschool.io?: 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.