How does PageSourceSearch know what delta.blue 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 delta.blue 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 delta.blue?

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 delta.blue?

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

delta.blue

Built with @typebot.io/js 0.10.11, @reachfive/identity-ui 2.1.0, @pairbo/ui-kit 0.4.23, @stlite/mountable 0.75.0, esri-leaflet-vector 4.3.2, extra-map-card 1.8.0, olamaps-web-sdk 1.4.0, dayschedule-widget 1.2.8, @etchteam/recycling-locator 1.78.1, azure-maps-control 3.7.4. 5 pages and 152 stored files, last crawled 2026-10-04.

rank 9,859,131 10 libraries 0 identifiers 61 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
@typebot.io/js	0.10.11	2026-10-04
@reachfive/identity-ui	2.1.0	2026-10-04
@pairbo/ui-kit	0.4.23	2026-10-04
@stlite/mountable	0.75.0	2026-10-04
esri-leaflet-vector	4.3.2	2026-10-04
extra-map-card	1.8.0	2026-10-04
olamaps-web-sdk	1.4.0	2026-10-04
dayschedule-widget	1.2.8	2026-10-04
@etchteam/recycling-locator	1.78.1	2026-10-04
azure-maps-control	3.7.4	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 delta.blue 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
12factor.net	connect	view source
about.gitlab.com	connect	view source
app.hyperlane.co	connect	view source
assets.vector.hereapi.com	connect	view source
blog.npmjs.org	connect	view source
bolero-crowdfunding.be	connect	view source
bootstrap.pypa.io	connect	view source
bsky.app	connect	view source
crontab.guru	connect	view source
deltablue.cloud	connect	view source
developer.mozilla.org	connect	view source
developers.google.com	connect	view source
devhints.io	connect	view source
docs.gitlab.com	connect	view source
docs.npmjs.com	connect	view source
docs.python.org	connect	view source
docs.spring.io	connect	view source
dynapps.eu	connect	view source
en.wikipedia.org	connect	view source
fonts.googleapis.com	stylesheet	view source
get.teamviewer.com	connect	view source
getcomposer.org	connect	view source
githooks.com	connect	view source
github.com	connect	view source
go.dev	connect	view source
gulpjs.com	connect	view source
jwt.io	connect	view source
maplibre.org	connect	view source
newrelic.com	connect	view source
node.js.org	connect	view source
nodejs.org	connect	view source
nvd.nist.gov	connect	view source
php.net	connect	view source
proxysql.com	connect	view source
pypi.org	connect	view source
raw.githubusercontent.com	connect	view source
rezolv.be	connect	view source
schema.phpunit.de	connect	view source
supervisord.org	connect	view source
symfony.com	connect	view source
tiles.openfreemap.org	connect	view source
varnish-cache.org	connect	view source
www.apache.org	connect	view source
www.braintreepayments.com	connect	view source
www.buildout.org	connect	view source
www.cis.upenn.edu	connect	view source
www.cloudflare.com	connect	view source
www.drupal.org	connect	view source
www.example.com	connect	view source
www.git-tower.com	connect	view source
www.haproxy.com	connect	view source
www.haproxy.org	connect	view source
www.javaworld.com	connect	view source
www.linkedin.com	connect	view source
www.my-awesome-webshop.com	connect	view source
www.nginx.com	connect	view source
www.npmjs.com	connect	view source
www.odoo.com	connect	view source
www.php-fig.org	connect	view source
www.rabbitmq.com	connect	view source
www.w3.org	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 152) }. 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://delta.blue/_build/assets/OfficeMap-DWYrQNE7.js	js	900.1 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/PricingSimulator-D8JPMWwO.js	js	10.8 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/HeaderSubMenu-k1cyB6Ts.js	js	35.8 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/edge-gateways-BP6BvCO2.js	js	2.2 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/dns-management-Fv7C7JjO.js	js	6.6 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/directly-invoicing-clients-Dd7JP6Lh.js	js	1.1 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/deploying--yQ8oG8V.js	js	5.2 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/datacenter-preferences-BmxYGDia.js	js	1.4 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/database-export-BkrxLBZg.js	js	1 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/custom-actions-73IcMYcX.js	js	5 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/creating-an-application-DsmVqWIb.js	js	3.7 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/creating-a-new-project-CIa2Z7KS.js	js	1.7 KB	2026-10-04	2026-10-04
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https://delta.blue/_build/assets/configuring-ports-Bpqp-7j0.js	js	6 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/cloudflare-benefits-DNiHx5PH.js	js	3.4 KB	2026-10-04	2026-10-04
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https://delta.blue/_build/assets/Card-DnW1nPsb.js	js	4 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/H3-ByEnj6pF.js	js	443 B	2026-10-04	2026-10-04
https://delta.blue/_build/assets/H2-DADVaGje.js	js	444 B	2026-10-04	2026-10-04
https://delta.blue/_build/assets/ContentBlock-BQFbFhvw.js	js	36.3 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/cn-DWCsrU0C.js	js library	22.5 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/client-OSTUZavy.js	js	121.7 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/docs-BXfpXkG-.js	js	5 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/index-DLhPyFmx.js	js	59 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/index-DP6jQfmA.js	js	3.4 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/index-BmmPB3vG.js	js	3.7 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/blog-articles-B_V1K-oA.js	js	15.7 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/action-CK8xPCn5.js	js	3.9 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/routing-DTSc-8OX.js	js	7.3 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/index-CR0h6niC.js	js	3.4 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/web-BP1PS1fb.js	js	27.7 KB	2026-10-04	2026-10-04
https://delta.blue/_build/assets/client-C_k7WEw2.js	js	323 B	2026-10-04	2026-10-04
https://delta.blue/contact	html	313.1 KB	2026-10-04	2026-10-04
https://delta.blue/about	html	308 KB	2026-10-04	2026-10-04
https://delta.blue/application-platform/pricing	html	300.6 KB	2026-10-04	2026-10-04
https://delta.blue/blog	html	339 KB	2026-10-04	2026-10-04
https://delta.blue/	html	400.9 KB	2026-10-04	2026-10-04

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, 152 files, 3.7 MB; 10 libraries, 0 identifiers, 61 third-party hosts
10 libraries added
- dayschedule-widget 1.2.8
- @reachfive/identity-ui 2.1.0
- @typebot.io/js 0.10.11
- @pairbo/ui-kit 0.4.23
- @etchteam/recycling-locator 1.78.1
- extra-map-card 1.8.0
- olamaps-web-sdk 1.4.0
- azure-maps-control 3.7.4
- esri-leaflet-vector 4.3.2
- @stlite/mountable 0.75.0
61 third-party hosts added
- fonts.googleapis.com
- www.w3.org
- github.com
- bsky.app
- www.linkedin.com
- get.teamviewer.com
- rezolv.be
- dynapps.eu
- www.cloudflare.com
- newrelic.com
- jwt.io
- symfony.com
- and 49 more
152 files added

Questions about delta.blue

How does PageSourceSearch know what delta.blue 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 delta.blue 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 delta.blue?: 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 delta.blue?: 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.