How does PageSourceSearch know what diffblue.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 diffblue.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 diffblue.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 diffblue.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

diffblue.com

Built with hls.js, gtm, @covet-pics/covet-pics-widget 0.179.0, dashjs, @mux/mux-player, @feathery/react 2.96.0, facebook-sdk, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, flv.js, @codesandbox/sandpack-client 2.19.8 and more. 1 page and 171 stored files, last crawled 2026-10-02.

rank 410,845 42 libraries 2 identifiers 63 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
hls.js		2026-10-02
gtm		2026-10-02
@covet-pics/covet-pics-widget	0.179.0	2026-10-02
dashjs		2026-10-02
@mux/mux-player		2026-10-02
@feathery/react	2.96.0	2026-10-02
facebook-sdk		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
flv.js		2026-10-02
@codesandbox/sandpack-client	2.19.8	2026-10-02
@segment/analytics-signals	2.4.5	2026-10-02
paymob-pixel	1.2.7	2026-10-02
cloudflare-rocket-loader		2026-10-02
vimeo-player		2026-10-02
hubspot-forms		2026-10-02
hubspot		2026-10-02
@segment/analytics-next	1.84.3	2026-10-02
biel-search	0.1.89	2026-10-02
vditor	4.0.0	2026-10-02
@xano/js-sdk	3.0.1	2026-10-02
diff2html	3.4.56	2026-10-02
ovenplayer	0.10.54	2026-10-02
graphql-playground-react	1.7.28	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
krds-uiux	1.1.0	2026-10-02
@crystaldesign/diva-web-planner-react	26.11.0	2026-10-02
cil-dropin-components	1.2.10	2026-10-02
@ideal-postcodes/bigcommerce	3.2.0	2026-10-02
@crystaldesign/diva-core	26.11.0	2026-10-02
@formbird/angular-elements	8.5.10	2026-10-02
@fsl-app/erm-app	1.1.3	2026-10-02
vf-widgets	0.2.48	2026-10-02
@chativa/connector-directline	0.15.0	2026-10-02
@amplitude/amplitude-js-gtm	3.25.0	2026-09-24
swagger-ui-dist	5.33.0	2026-09-24
typesense-instantsearch-adapter	3.0.2	2026-09-24
@cognigy/webchat	3.50.0	2026-09-24
@tolgee/web	7.2.1	2026-09-24
@sledge-app/js	2.0.114	2026-09-24
@mgdis/mg-components	6.29.0	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
Google Tag Manager container (Google)	GTM-WXX5R39	view source
HubSpot portal id (HubSpot)	7183665	view source

Third-party hosts

Hosts outside diffblue.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
api.clearout.io	connect	view source
api.dmcdn.net	connect	view source
api.pinterest.com	connect	view source
api.tumblr.com	connect	view source
api.vimeo.com	connect	view source
b.hatena.ne.jp	connect	view source
bookmark.hatenaapis.com	connect	view source
bsky.app	connect	view source
cdn.embed.ly	connect	view source
cdn.feedbucket.app	connect	view source
cdn.jsdelivr.net	connect	view source
cdn.segment.com	connect	view source
cdnjs.cloudflare.com	connect	view source
clearout.io	connect	view source
connect.facebook.net	connect	view source
connect.mail.ru	connect	view source
connect.ok.ru	connect	view source
diffblue.pinpointhq.com	connect	view source
diffbluewp.wpengine.com	connect	view source
fast.wistia.com	connect	view source
fonts.googleapis.com	connect	view source
fonts.gstatic.com	connect	view source
gab.com	connect	view source
getpocket.com	connect	view source
github.com	connect	view source
graph.facebook.com	connect	view source
js.hsforms.net	connect	view source
linkedin.com	connect	view source
noembed.com	connect	view source
pinterest.com	connect	view source
play.vidyard.com	connect	view source
player.twitch.tv	connect	view source
player.vimeo.com	connect	view source
reactjs.org	connect	view source
reveal.clearbit.com	connect	view source
rive.app	connect	view source
service.weibo.com	connect	view source
social-plugins.line.me	connect	view source
static.cloudflareinsights.com	script	view source
streamable.com	connect	view source
telegram.me	connect	view source
threads.net	connect	view source
twitter.com	connect	view source
unpkg.com	connect	view source
use.typekit.net	connect	view source
va.vercel-scripts.com	connect	view source
vercel.live	connect	view source
videodelivery.net	connect	view source
vk.com	connect	view source
w.soundcloud.com	connect	view source
widget.mixcloud.com	connect	view source
work.facebook.com	connect	view source
www.facebook.com	connect	view source
www.googleapis.com	connect	view source
www.googletagmanager.com	iframe	view source
www.instapaper.com	connect	view source
www.livejournal.com	connect	view source
www.mixcloud.com	connect	view source
www.reddit.com	connect	view source
www.tumblr.com	connect	view source
www.w3.org	connect	view source
www.youtube-nocookie.com	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 171) }. 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://cdn.jsdelivr.net/npm/@mux/mux-player@VERSION/dist/mux-player.mjs	js library	not fetched	2026-10-02	current
https://cdn.jsdelivr.net/npm/flv.js@VERSION/dist/flv.min.js	js library	not fetched	2026-10-02	current
https://cdn.jsdelivr.net/npm/hls.js@VERSION/dist/hls.min.js	js library	not fetched	2026-10-02	current
https://cdnjs.cloudflare.com/ajax/libs/dashjs/VERSION/dash.all.min.js	js library	not fetched	2026-10-02	current
https://connect.facebook.net/en_US/sdk.js	js library	not fetched	2026-10-02	current
https://js.hs-scripts.com/7183665.js	js library	not fetched	2026-10-02	current
https://js.hsforms.net/forms/v2.js	js library	not fetched	2026-10-02	current
https://player.vimeo.com/api/player.js	js library	not fetched	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/9781.b2ccf5b754ec40c6.js	js	9.5 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/9958.362b7283b998981f.js	js	898 B	2026-10-02	current
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https://www.diffblue.com/_next/static/chunks/9541.a44fcd9e180e2e05.js	js	3.8 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/9281.b581d9b3df010ffa.js	js	121.8 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/9229.54e561f876884f10.js	js	3.2 KB	2026-10-02	current
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https://www.diffblue.com/_next/static/chunks/8904.a577a40634c94b9d.js	js	31.1 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/8862.c3a0feba3bf412fa.js	js	28 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/8809.083851c812557c1a.js	js	4.9 KB	2026-10-02	current
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https://www.diffblue.com/_next/static/chunks/rea…rStreamable.8948a8915af38aab.js	js	2.5 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/rea…yerFacebook.16e623d18bc1f70a.js	js	2.8 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/rea…ayerKaltura.4d677430fb34adb3.js	js	2.4 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pages/[...slug]-2f8c86ab8ea0837d.js	js	303 B	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pag…sitemap.xml-cdc03d268a14d955.js	js	412 B	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pag…reflang.xml-1a56fb44f33aae27.js	js	421 B	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pag…/robots.txt-9b47a214c58e9591.js	js	409 B	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pages/private-505be183839ef801.js	js	1.3 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/7066-289cbd73ebc2dce2.js	js	56.9 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pages/preview-a4108a07c8a2110e.js	js	503 B	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pag…/[...slug]-59b497fe8f284f09.js	js	16.6 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/7403-d46f55f43762200e.js	js	17.2 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pages/_error-d17a4664bec92ffa.js	js	272 B	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/pages/404-aa3ff740ecc13298.js	js	9.7 KB	2026-10-02	current
https://www.diffblue.com/_vercel/insights/script.js	js	4.4 KB	2026-10-02	current
https://www.diffblue.com/_next/static/eAN_K20YT_K_zR41El-3w/_ssgManifest.js	js	149 B	2026-10-02	2026-10-02
https://www.diffblue.com/_next/static/eAN_K20YT_K_zR41El-3w/_buildManifest.js	js	1.6 KB	2026-10-02	2026-10-02
https://www.diffblue.com/_next/static/chunks/pages/index-7604de988262e666.js	js	416 B	2026-10-02	current
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https://www.diffblue.com/_next/static/chunks/webpack-7c4d857ce07d2d4c.js	js	9.2 KB	2026-10-02	2026-10-02
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https://www.diffblue.com/_next/static/chunks/6949.6b53ed2178e12456.js	js	15.7 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/31d4e3d1.1ff74a1bbf789827.js	js	124.1 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/2620.499c1e4823c24800.js	js	1.7 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/6443.10a3f70591011372.js	js	557 B	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/2631.c7b3d54d3e70c74e.js	js	2.7 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/7649.5427153ec2310305.js	js	7.4 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/1689.3e98915ed41b206d.js	js	6.3 KB	2026-10-02	current
https://www.diffblue.com/_next/static/chunks/polyfills-42372ed130431b0a.js	js	110 KB	2026-10-02	current
https://www.diffblue.com/	html	127.4 KB	2026-10-02	2026-10-02
https://www.diffblue.com/_next/static/-Vdc2fLt4ckWh2Tf7TvAL/_ssgManifest.js	js	149 B	2026-09-24	current
https://www.diffblue.com/_next/static/-Vdc2fLt4ckWh2Tf7TvAL/_buildManifest.js	js	1.6 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

1 page, 169 files, 2 MB; 37 libraries, 2 identifiers, 63 third-party hosts
37 libraries added
- gtm
- cloudflare-rocket-loader
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @reachfive/identity-ui 2.1.0
- ovenplayer 0.10.54
- @recogito/annotorious 2.7.14
- dashjs 5.2.1
- graphql-playground-react 1.7.28
- @fsl-app/erm-app 1.1.3
- @crystaldesign/diva-web-planner-react 26.11.0
- @covet-pics/covet-pics-widget 0.179.0
- and 25 more
2 identifiers added
- GTM-WXX5R39 Google Tag Manager container
- 7183665 HubSpot portal id
63 third-party hosts added
- static.cloudflareinsights.com
- www.googletagmanager.com
- github.com
- www.w3.org
- rive.app
- cdn.jsdelivr.net
- unpkg.com
- vercel.live
- reactjs.org
- fonts.googleapis.com
- fonts.gstatic.com
- use.typekit.net
- and 51 more
169 files added

Questions about diffblue.com

How does PageSourceSearch know what diffblue.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 diffblue.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 diffblue.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 diffblue.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.