How does PageSourceSearch know what schoolguide-eu.herokuapp.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 schoolguide-eu.herokuapp.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 schoolguide-eu.herokuapp.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 schoolguide-eu.herokuapp.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

schoolguide-eu.herokuapp.com

Built with jquery 1.14.1, gtm, gtag, bootstrap-datepicker 1.10.1, raphael 2.3.0, universalviewer 4.4.4, bootstrap-sass 3.4.3, vditor 4.0.0, @vitest/utils 5.0.2, layui-src 2.6.8, develart-olzalogistic-pickup-points-widget 1.8.19, syzoj-public-cdn 1.2.0. 5 pages and 7 stored files, last crawled 2026-10-03.

12 libraries 5 identifiers 10 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
jquery	1.14.1	2026-10-03
gtm		2026-10-03
gtag		2026-10-03
bootstrap-datepicker	1.10.1	2026-10-03
raphael	2.3.0	2026-10-03
universalviewer	4.4.4	2026-10-03
bootstrap-sass	3.4.3	2026-10-03
vditor	4.0.0	2026-10-03
@vitest/utils	5.0.2	2026-10-03
layui-src	2.6.8	2026-10-03
develart-olzalogistic-pickup-points-widget	1.8.19	2026-10-03
syzoj-public-cdn	1.2.0	2026-10-03

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 Ads conversion id (Google)	AW-755194149	view source
Bing site verification (Microsoft)	878819DF36A6D6D1BE59A93D76935F64	view source
Facebook app id (Meta)	128725944455861	view source
Google site verification (Google)	_gMLWAGGn304OnAxUqYKiuIUp5axaWsaTwfNO2ZXrQ0	view source
Google Tag Manager container (Google)	GTM-5WTLBTN	view source

Third-party hosts

Hosts outside schoolguide-eu.herokuapp.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
cookie-script.com	script	view source
docs.google.com	connect	view source
dsms0mj1bbhn4.cloudfront.net	script	view source
raphaeljs.com	connect	view source
sggp.herokuapp.com	connect	view source
www.googleadservices.com	script	view source
www.googletagmanager.com	script iframe	view source
www.schoolguide.co.uk	connect	view source
www.w3.org	connect	view source
www.youtube.com	iframe	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 7) }. 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://schoolguide-eu.herokuapp.com/assets/appl…ac2d76144dda381e0ccff73c4232.js	js	424.9 KB	2026-10-03	2026-10-03
https://www.googletagmanager.com/gtag/js?id=AW-755194149	js library	not fetched	2026-10-03	2026-10-03
https://schoolguide-eu.herokuapp.com/about/privacy-policy	html	86.1 KB	2026-10-03	2026-10-03
https://schoolguide-eu.herokuapp.com/your-school…schools-can-add-news-and-photos	html	66.3 KB	2026-10-03	2026-10-03
https://schoolguide-eu.herokuapp.com/blog	html	255.1 KB	2026-10-03	2026-10-03
https://schoolguide-eu.herokuapp.com/login	html	62 KB	2026-10-03	2026-10-03
https://schoolguide-eu.herokuapp.com/	html	91.1 KB	2026-10-03	2026-10-03

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.

2026-10-03 first crawl

5 pages, 7 files, 985.5 KB; 12 libraries, 5 identifiers, 10 third-party hosts
12 libraries added
- @vitest/utils 5.0.2
- gtag
- gtm
- layui-src 2.6.8
- develart-olzalogistic-pickup-points-widget 1.8.19
- universalviewer 4.4.4
- bootstrap-datepicker 1.10.1
- bootstrap-sass 3.4.3
- raphael 2.3.0
- vditor 4.0.0
- syzoj-public-cdn 1.2.0
- jquery 1.14.1
5 identifiers added
- AW-755194149 Google Ads conversion id
- GTM-5WTLBTN Google Tag Manager container
- _gMLWAGGn304OnAxUqYKiuIUp5axaWsaTwfNO2ZXrQ0 Google site verification
- 878819DF36A6D6D1BE59A93D76935F64 Bing site verification
- 128725944455861 Facebook app id
11 third-party hosts added
7 files added

Questions about schoolguide-eu.herokuapp.com

How does PageSourceSearch know what schoolguide-eu.herokuapp.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 schoolguide-eu.herokuapp.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 schoolguide-eu.herokuapp.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 schoolguide-eu.herokuapp.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.