How does PageSourceSearch know what kupfundusz.pl 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 kupfundusz.pl 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 kupfundusz.pl?

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 kupfundusz.pl?

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

kupfundusz.pl

Built with gtm, @finsweet/fs-components 2.3.59, @wix/design-system 1.328.0, glightbox 3.3.1, d3 7.9.0, flowbite 4.0.2, rrweb 2.1.6, @marimo-team/frontend 0.25.0, @tabler/core 1.5.1, es-module-shims 1.10.0, tailwindcss-cdn 3.4.10, @flowbase-co/boosters-tooltip 1.1.2 and more. 5 pages and 110 stored files, last crawled 2026-10-08.

rank 14,067,798 32 libraries 1 identifier 8 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		2026-10-08
@finsweet/fs-components	2.3.59	2026-10-08
@wix/design-system	1.328.0	2026-10-08
glightbox	3.3.1	2026-10-08
d3	7.9.0	2026-10-08
flowbite	4.0.2	2026-10-08
rrweb	2.1.6	2026-10-08
@marimo-team/frontend	0.25.0	2026-10-08
@tabler/core	1.5.1	2026-10-08
es-module-shims	1.10.0	2026-10-08
tailwindcss-cdn	3.4.10	2026-10-08
@flowbase-co/boosters-tooltip	1.1.2	2026-10-08
tw-elements	2.0.0	2026-10-08
@hellotext/hellotext	2.6.0	2026-10-08
rrweb-player	2.1.6	2026-10-08
robust-predicates	3.0.3	2026-10-08
string-natural-compare		2026-10-08
@vouchfor/embeds	8.4.3	2026-10-08
universalviewer	4.4.4	2026-10-08
@meowwolf/meowwolf-main	1.5.2	2026-10-08
@epigraph/configurator	2.7.0	2026-10-08
plotly.js	4.1.1	2026-10-08
billboard.js	4.1.0	2026-10-08
dayschedule-widget	1.2.8	2026-10-08
@prefecthq/prefab-ui	0.20.2	2026-10-08
@myparcel-dev/delivery-options	7.5.3	2026-10-08
@amplitude/rrweb-plugin-console-record	2.1.4	2026-10-08
vue3-emoji-picker	1.1.8	2026-10-08
@gradio/lite	5.45.0	2026-10-08
hexo-theme-redefine	2.9.0	2026-10-08
@contributte/datagrid	7.1.0	2026-10-08
ramp-pcar	4.22.1	2026-10-08

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-WJVKZ9FN	view source

Third-party hosts

Hosts outside kupfundusz.pl 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
cdn.plyr.io	connect	view source
ga.jspm.io	script	view source
github.com	connect	view source
opencollective.com	connect	view source
quilljs.com	connect	view source
www.googletagmanager.com	iframe	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 110) }. 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://ga.jspm.io/npm:[email protected]/dist/es-module-shims.js	js library	not fetched	2026-10-08	2026-10-08
https://www.kupfundusz.pl/assets/vendor/date-fns…d23f4d8d32b292262d44541ceabb.js	js	71.8 KB	2026-10-08	2026-10-08
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https://www.kupfundusz.pl/	html	312.2 KB	2026-10-08	2026-10-08

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.

2026-10-08 first crawl

5 pages, 110 files, 3.1 MB; 33 libraries, 1 identifier, 8 third-party hosts
33 libraries added
- gtm
- @hellotext/hellotext 2.6.0
- @finsweet/fs-components 2.3.59
- @flowbase-co/boosters-tooltip 1.1.2
- ramp-pcar 4.22.1
- vue3-emoji-picker 1.1.8
- tw-elements 2.0.0
- plotly.js 4.1.1
- tailwindcss-cdn 3.4.10
- universalviewer 4.4.4
- @vouchfor/embeds 8.4.3
- @epigraph/configurator 2.7.0
- and 21 more
1 identifier added
- GTM-WJVKZ9FN Google Tag Manager container
9 third-party hosts added
110 files added

Questions about kupfundusz.pl

How does PageSourceSearch know what kupfundusz.pl 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 kupfundusz.pl 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 kupfundusz.pl?: 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 kupfundusz.pl?: 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.