How does PageSourceSearch know what worldchess.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 worldchess.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 worldchess.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 worldchess.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

worldchess.com

Built with gtm, @clerk/ui 1.34.0, dashjs 5.2.1, @inkeep/cxkit-js 0.5.119, stripe-js 9.9.0, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, @revenuecat/purchases-js-hybrid-mappings 19.3.1, ovenplayer 0.10.54, graphql-playground-react 1.7.28, @revenuecat/purchases-js 1.64.0 and more. 5 pages and 265 stored files, last crawled 2026-10-02.

rank 490,172 23 libraries 2 identifiers 43 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
dashjs	5.2.1	2026-10-02
@inkeep/cxkit-js	0.5.119	2026-10-02
stripe-js	9.9.0	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
@revenuecat/purchases-js-hybrid-mappings	19.3.1	2026-10-02
ovenplayer	0.10.54	2026-10-02
graphql-playground-react	1.7.28	2026-10-02
@revenuecat/purchases-js	1.64.0	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@machi-pla/ai-chatbot	0.1.25	2026-10-02
holidoit	1.0.163	2026-10-02
@ant-design/x	2.9.0	2026-10-02
mori-chat-widget	2.0.49	2026-10-02
@tsocial/tvweb-sdk	5.38.6	2026-10-02
@formbird/angular-elements	8.5.10	2026-10-02
prometix	1.7.0	2026-10-02
spectorjs	0.9.33	2026-09-24
@moveo-ai/web-client	0.117.0	2026-09-24
scanbot-web-sdk	9.0.0	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
AdSense publisher id (Google)	ca-pub-4016505655042754	view source
Sentry DSN host (Sentry)	o514655.ingest.sentry.io	view source

Third-party hosts

Hosts outside worldchess.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
accounts.google.com	connect	view source
api-iam.intercom.io	connect	view source
api.revenuecat.com	connect	view source
api.sanity.io	connect	view source
api.stripe.com	connect	view source
appleid.apple.com	connect	view source
apps.apple.com	connect	view source
bureau.rocks	connect	view source
cdn.jsdelivr.net	connect	view source
cdn.paddle.com	connect	view source
cdn.sanity.io	connect	view source
coaches.chessarena.com	connect	view source
da08ctfrofx1b.cloudfront.net	connect	view source
discord.gg	connect	view source
e.revenue.cat	connect	view source
empty.invalid	connect	view source
example.com	connect	view source
fonts.googleapis.com	connect	view source
form.typeform.com	connect	view source
github.com	connect	view source
js.stripe.com	connect	view source
nextjs.org	connect	view source
pagead2.googlesyndication.com	connect	view source
play.google.com	connect	view source
ratings.fide.com	connect	view source
react.dev	connect	view source
rive.app	connect	view source
sdk.revenuecat-static.com	connect	view source
static.chessarena.com	connect	view source
svelte.dev	connect	view source
unpkg.com	connect	view source
use.typekit.net	connect	view source
wa.me	connect	view source
widget.intercom.io	connect	view source
www.example.com	connect	view source
www.facebook.com	connect	view source
www.googletagmanager.com	connect	view source
www.instagram.com	connect	view source
www.londonstockexchange.com	connect	view source
www.paypal.com	connect	view source
www.tiktok.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 265) }. 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
https://www.googletagmanager.com/gtm.js?id=GTM-NF5KBBWQ	js library	not fetched	2026-10-02	current
https://worldchess.com/_next/static/chunks/2501-5fab85f4ebfbf629.js	js	121.1 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/6194-d91a5840a03244eb.js	js	14 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/2753-d23cc1b14b234fbb.js	js	24.5 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/6783-06d707c1637f4e5e.js	js	36.3 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/3446-01d01da63945bf1f.js	js	55.9 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/1935-af3f6de77d50134f.js	js	224.3 KB	2026-10-02	current
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https://worldchess.com/_next/static/chunks/9682-5f0b36d77df82b52.js	js	32.5 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/4206-711200a84cc15104.js	js	12.3 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/9351-8e64d924f618538f.js	js	31.2 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/598-bc30a155f5c567bb.js	js	56.1 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/1552-a109f865698b663d.js	js	137.4 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/529-bd0a494a2ea48b37.js	js	15.3 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/6775-0c7d7001e85acb0e.js	js	22.2 KB	2026-10-02	current
https://worldchess.com/_next/static/chunks/9994.67a0d2201b29f45c.js	js	251.6 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/9980.525d4755ce288368.js	js	21.2 KB	2026-10-02	2026-10-02
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https://worldchess.com/_next/static/chunks/9292.46285f866e8c2db0.js	js	200.2 KB	2026-10-02	2026-10-02
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https://worldchess.com/_next/static/chunks/7659.6dd2062da40d7b67.js	js	199.7 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/7544.1d181ca8b2bdb488.js	js	8.9 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/7632.e3be72e28295c4ce.js	js	2.2 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/7539.638a410de4b62f9e.js	js	41 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/7462.baa781b61c11f14b.js	js	12.7 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/7448.e318010350d68cba.js	js	18.1 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/7078.b9c9621a857bc85d.js	js	206.7 KB	2026-10-02	2026-10-02
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https://worldchess.com/_next/static/chunks/6666.0bb3dc9c79e511ec.js	js	199 KB	2026-10-02	2026-10-02
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https://worldchess.com/_next/static/chunks/6023.3cdc804f7f509dcb.js	js	40 KB	2026-10-02	current
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https://worldchess.com/_next/static/chunks/5357.ac2ffe5a6c817de9.js	js	202.9 KB	2026-10-02	2026-10-02
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https://worldchess.com/_next/static/chunks/5064.ab7954691a7b5393.js	js	212.2 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/5020.0665dc28f12fa793.js	js	25.4 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/4971.dd03eda93d4f94bc.js	js	167.9 KB	2026-10-02	2026-10-02
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https://worldchess.com/_next/static/chunks/3915.13a92b3f71ee63e7.js	js	196 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/4120.c09f60ee3ba5d6cd.js	js	16.6 KB	2026-10-02	2026-10-02
https://worldchess.com/_next/static/chunks/3556.3c6dba54d55b4993.js	js	192.8 KB	2026-10-02	2026-10-02
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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, 201 files, 14.4 MB; 21 libraries, 2 identifiers, 43 third-party hosts
21 libraries added
- mori-chat-widget 2.0.49
- @inkeep/cxkit-js 0.5.119
- @clerk/ui 1.34.0
- @ant-design/x 2.9.0
- prometix 1.7.0
- @machi-pla/ai-chatbot 0.1.25
- holidoit 1.0.163
- @tsocial/tvweb-sdk 5.38.6
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @reachfive/identity-ui 2.1.0
- ovenplayer 0.10.54
- and 9 more
2 identifiers added
- ca-pub-4016505655042754 AdSense publisher id
- o514655.ingest.sentry.io Sentry DSN host
43 third-party hosts added
- react.dev
- www.w3.org
- nextjs.org
- www.example.com
- example.com
- empty.invalid
- api.stripe.com
- static.chessarena.com
- www.googletagmanager.com
- appleid.apple.com
- accounts.google.com
- www.facebook.com
- and 31 more
201 files added

Questions about worldchess.com

How does PageSourceSearch know what worldchess.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 worldchess.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 worldchess.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 worldchess.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.