How does PageSourceSearch know what 4dayweek.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 4dayweek.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 4dayweek.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 4dayweek.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

4dayweek.io

Built with @clerk/ui 1.34.0, @blotoutio/providers-blotout-consent-sdk 1.73.0, dashjs 5.2.1, posthog-js 1.434.12, @marimo-team/frontend 0.25.0, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, cloudflare-insights, fathom, @vitest/utils 5.0.2, @recogito/annotorious 2.7.14 and more. 6 pages and 101 stored files, last crawled 2026-10-02.

rank 542,829 21 libraries 0 identifiers 17 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	2026-10-02
@blotoutio/providers-blotout-consent-sdk	1.73.0	2026-10-02
dashjs	5.2.1	2026-10-02
posthog-js	1.434.12	2026-10-02
@marimo-team/frontend	0.25.0	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
cloudflare-insights		2026-10-02
fathom		2026-10-02
@vitest/utils	5.0.2	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@ant-design/x	2.9.0	2026-10-02
@inkeep/agents-ui-js-cloud	0.17.8	2026-10-02
@joyfill/components	4.0.0-rc26	2026-10-02
@pydantic/ai-chat-ui	2.3.0	2026-10-02
@miso.ai/client-sdk	1.13.1	2026-09-24
spectorjs	0.9.33	2026-09-24
@moveo-ai/web-client	0.117.0	2026-09-24
@alfatech/livechat	2026.9.0-9.2	2026-09-24
@commercelayer/drop-in.js	2.27.0	2026-09-24

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 4dayweek.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
app.posthog.com	connect	view source
cdn.usefathom.com	connect	view source
eu.i.posthog.com	connect	view source
example.com	connect	view source
github.com	connect	view source
json-schema.org	connect	view source
linkedin.com	connect	view source
react.dev	connect	view source
redirect.invalid	connect	view source
sentry.io	connect	view source
static.cloudflareinsights.com	script	view source
twitter.com	connect	view source
us.i.posthog.com	connect	view source
us.posthog.com	connect	view source
www.linkedin.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 101) }. 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://4dayweek.io/_next/static/chunks/179wm_u9pi5xm.js?dpl=19331a6d-1790690377	js	41 KB	2026-10-02	2026-10-02
https://cdn.usefathom.com/script.js	js library	not fetched	2026-10-02	current
https://static.cloudflareinsights.com/beacon.min…85bb4c19e7a9bdbcba1788362987495	js library	not fetched	2026-10-02	current
https://4dayweek.io/_next/static/chunks/41ho7_dj_fiyq.js?dpl=19331a6d-1790690377	js	79.6 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/2hymhdnimxnmy.js?dpl=19331a6d-1790690377	js	99 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3whf_63g18a16.js?dpl=19331a6d-1790690377	js	96.4 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3q7uz_3_xtsih.js?dpl=19331a6d-1790690377	js	99 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/297kjpdhq5297.js?dpl=19331a6d-1790690377	js	80.3 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/2mlgl784nfo-c.js?dpl=19331a6d-1790690377	js	125.7 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/207yjwnaclkgs.js?dpl=19331a6d-1790690377	js	41.6 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/1gg2sozm9lyff.js?dpl=19331a6d-1790690377	js	24.5 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/1o2orjnnhguvw.js?dpl=19331a6d-1790690377	js	25.4 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/314rbfgwlh_4o.js?dpl=19331a6d-1790690377	js	9.7 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/2-iq8r0r1a-ga.js?dpl=19331a6d-1790690377	js	286 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/27w4zlsq_c8v-.js?dpl=19331a6d-1790690377	js	28 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3yc9o4n93rimn.js?dpl=19331a6d-1790690377	js	30.8 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/4062jk1_gfetb.js?dpl=19331a6d-1790690377	js	25.1 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/07lgypv9oindu.js?dpl=19331a6d-1790690377	js	2 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/0cz1d0mv5g_q7.js?dpl=19331a6d-1790690377	js	110.4 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/2mfv6_q-y8gvu.js?dpl=19331a6d-1790690377	js	5.3 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/04pau2tee0zxz.js?dpl=19331a6d-1790690377	js	32.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/0daxnhu2tfap2.js?dpl=19331a6d-1790690377	js	77.8 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3m17pgphe94q2.js?dpl=19331a6d-1790690377	js	4.1 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/398sttda7p-mj.js?dpl=19331a6d-1790690377	js	164.5 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/2ege7i-scyium.js?dpl=19331a6d-1790690377	js	131.4 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3v0psv7hn883e.js?dpl=19331a6d-1790690377	js	36 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/164as37sl0psj.js?dpl=19331a6d-1790690377	js	26.7 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/0u2k_zbl18dkj.js?dpl=19331a6d-1790690377	js	26.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3ucqywjp9t0-8.js?dpl=19331a6d-1790690377	js	45.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3s2oq3chqb2oj.js?dpl=19331a6d-1790690377	js	24.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/1g0whhvik3i-x.js?dpl=19331a6d-1790690377	js	17.8 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3gwkpyutvmotf.js?dpl=19331a6d-1790690377	js	9.3 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/1pms_v3hmva8h.js?dpl=19331a6d-1790690377	js	56 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3vrxv1f6p2kuh.js?dpl=19331a6d-1790690377	js	35.5 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/19_1gdc4b2x5e.js?dpl=19331a6d-1790690377	js	24.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/0ko2054akfmyv.js?dpl=19331a6d-1790690377	js	17.3 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3-hbpc-g1_ltx.js?dpl=19331a6d-1790690377	js	9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/2mcfr8ws0l1u2.js?dpl=19331a6d-1790690377	js	53.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/0wuj73kt11p14.js?dpl=19331a6d-1790690377	js	39.7 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/0rnvm8t6l-nsg.js?dpl=19331a6d-1790690377	js	228.1 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/turbopac…?dpl=19331a6d-1790690377	js	10.8 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/2fyn4fjkn9v2e.js?dpl=19331a6d-1790690377	js	301.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/0nkolptf11-si.js?dpl=19331a6d-1790690377	js	134.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/3iiqxfo00ux5q.js?dpl=19331a6d-1790690377	js	30.8 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/39j9on81txhbu.js?dpl=19331a6d-1790690377	js	44.3 KB	2026-10-02	2026-10-02
https://4dayweek.io/blog	html	427.1 KB	2026-10-02	2026-10-02
https://4dayweek.io/product-jobs	html	382.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/job-search	html	182.9 KB	2026-10-02	2026-10-02
https://4dayweek.io/login	html	53.1 KB	2026-10-02	2026-10-02
https://4dayweek.io/	html	419.4 KB	2026-10-02	2026-10-02
https://4dayweek.io/_next/static/chunks/0_ik28qae0ob1.js?dpl=543dadbd-1790015167	js	23.8 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/1wolvqq3b-jtl.js?dpl=543dadbd-1790015167	js	586 B	2026-09-24	current
https://4dayweek.io/_next/static/chunks/39jwztzxqb-bg.js?dpl=543dadbd-1790015167	js	98.5 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/39lhc3w4e7nv-.js?dpl=543dadbd-1790015167	js	7.3 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3h5yt8q0jhm2v.js?dpl=543dadbd-1790015167	js	12.2 KB	2026-09-24	current
https://4dayweek.io/cdn-cgi/challenge-platform/h…/jsd/d76008a69eab/main.js?	js	20.7 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0ln5jy_bj5ccu.js?dpl=543dadbd-1790015167	js	45.6 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0-q33oh2svt0m.js?dpl=543dadbd-1790015167	js	95 KB	2026-09-24	current
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https://4dayweek.io/_next/static/chunks/0f36radekgkw1.js?dpl=543dadbd-1790015167	js	77.8 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/18v6ojdq0lchz.js?dpl=543dadbd-1790015167	js	95 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/419ddowz9q63r.js?dpl=543dadbd-1790015167	js	125.7 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/16zapwz5ud8r1.js?dpl=543dadbd-1790015167	js	37.5 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/16s2_wj_qrv9_.js?dpl=543dadbd-1790015167	js	98.5 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3rwubrx2_zss9.js?dpl=543dadbd-1790015167	js	24.3 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/00vj1fbiy2p-8.js?dpl=543dadbd-1790015167	js	25.2 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/1k8odstwo9krh.js?dpl=543dadbd-1790015167	js	7.2 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0bds4hyumm5cv.js?dpl=543dadbd-1790015167	js	27.8 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/2-iq8r0r1a-ga.js?dpl=543dadbd-1790015167	js	286 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3yc9o4n93rimn.js?dpl=543dadbd-1790015167	js	30.8 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/1hifzwh_jc7wa.js?dpl=543dadbd-1790015167	js	25.1 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0itc-a3x67-z7.js?dpl=543dadbd-1790015167	js	1 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0cz1d0mv5g_q7.js?dpl=543dadbd-1790015167	js	110.4 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3w_yy_ieix1i3.js?dpl=543dadbd-1790015167	js	3.8 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0zo60h07sxwu4.js?dpl=543dadbd-1790015167	js	27.9 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/36k3ey9fpd8eg.js?dpl=543dadbd-1790015167	js	4.1 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3dn5byo4b01cn.js?dpl=543dadbd-1790015167	js	97.9 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3-h4dzve396zq.js?dpl=543dadbd-1790015167	js	144 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/2ege7i-scyium.js?dpl=543dadbd-1790015167	js	131.4 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3py-dgtf-8w-w.js?dpl=543dadbd-1790015167	js	36.1 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0-r-daggbg501.js?dpl=543dadbd-1790015167	js	26.2 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/260za6l9d5p3g.js?dpl=543dadbd-1790015167	js	26.8 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/2j3-ck1uko_9-.js?dpl=543dadbd-1790015167	js	45.9 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0xqnt0x62dglt.js?dpl=543dadbd-1790015167	js	25.3 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0zmm6mr6vekkg.js?dpl=543dadbd-1790015167	js	18 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0kjueqzwk4s1q.js?dpl=543dadbd-1790015167	js	6.6 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/368dvtekth-i2.js?dpl=543dadbd-1790015167	js	56 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/1te9v1cx3u6m0.js?dpl=543dadbd-1790015167	js	34 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3uycojgkaqnr7.js?dpl=543dadbd-1790015167	js	24.6 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/2ymxxorolclm8.js?dpl=543dadbd-1790015167	js	6.5 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0dft7rfbqju4e.js?dpl=543dadbd-1790015167	js	39.1 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/2mcfr8ws0l1u2.js?dpl=543dadbd-1790015167	js	53.9 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3h61ua89ekn-c.js?dpl=543dadbd-1790015167	js	13.4 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/turbopac…?dpl=543dadbd-1790015167	js	10.8 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/3upj92uwzbw7c.js?dpl=543dadbd-1790015167	js	228 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/35p1o2s2c3_qs.js?dpl=543dadbd-1790015167	js	301.3 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0nkolptf11-si.js?dpl=543dadbd-1790015167	js	134.9 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/0g-ok-ecc9b-1.js?dpl=543dadbd-1790015167	js	30.8 KB	2026-09-24	current
https://4dayweek.io/_next/static/chunks/39j9on81txhbu.js?dpl=543dadbd-1790015167	js	44.3 KB	2026-09-24	current
https://4dayweek.io/job/account-supervisor-at-mixte-0718e0d4	html	263.3 KB	2026-09-24	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.

2026-10-02 first crawl

5 pages, 50 files, 4.2 MB; 16 libraries, 0 identifiers, 17 third-party hosts
16 libraries added
- @vitest/utils 5.0.2
- posthog-js 1.434.12
- @inkeep/agents-ui-js-cloud 0.17.8
- @clerk/ui 1.34.0
- @ant-design/x 2.9.0
- @joyfill/components 4.0.0-rc26
- @pydantic/ai-chat-ui 2.3.0
- @marimo-team/frontend 0.25.0
- @blotoutio/providers-blotout-consent-sdk 1.73.0
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @recogito/annotorious 2.7.14
- and 4 more
17 third-party hosts added
- static.cloudflareinsights.com
- react.dev
- yandex.com
- sentry.io
- app.posthog.com
- us.i.posthog.com
- us.posthog.com
- www.w3.org
- eu.i.posthog.com
- cdn.usefathom.com
- redirect.invalid
- github.com
- and 5 more
50 files added

Questions about 4dayweek.io

How does PageSourceSearch know what 4dayweek.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 4dayweek.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 4dayweek.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 4dayweek.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.