How does PageSourceSearch know what welldoing.org 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 welldoing.org 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 welldoing.org?

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 welldoing.org?

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

welldoing.org

Built with hls.js, gtm, webpack, @clerk/ui 1.34.0, dashjs, @mux/mux-player, @feathery/react 2.96.0, facebook-sdk, stripe-js 1.54.2, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1 and more. 7 pages and 124 stored files, last crawled 2026-10-03.

rank 1,890,230 30 libraries 1 identifier 72 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		2026-10-03
gtm		2026-10-03
webpack		2026-10-03
@clerk/ui	1.34.0	2026-10-03
dashjs		2026-10-03
@mux/mux-player		2026-10-03
@feathery/react	2.96.0	2026-10-03
facebook-sdk		2026-10-03
stripe-js	1.54.2	2026-10-03
@reachfive/identity-core	1.42.0	2026-10-03
@reachfive/identity-ui	2.1.0	2026-10-03
jspdf	4.2.1	2026-10-03
flv.js		2026-10-03
cloudflare-turnstile		2026-10-03
cloudflare-insights		2026-10-03
cloudflare-email-decode		2026-10-03
vimeo-player		2026-10-03
hapi-video	1.2.2	2026-10-03
webex	3.12.0	2026-10-03
ovenplayer	0.10.54	2026-10-03
graphql-playground-react	1.7.28	2026-10-03
@vitest/utils	5.0.2	2026-10-03
@recogito/annotorious	2.7.14	2026-10-03
@builder.io/webcomponents	2.0.2	2026-10-03
@stytch/vanilla-js	6.3.0	2026-10-03
@tsocial/tvweb-sdk	5.38.6	2026-10-03
@story-telling-reporter/react-embed-code-generator	2.2.20	2026-10-03
@percy.ai/your-team	1.1.10	2026-10-03
swr	2.5.1	2026-09-25
@solace-health/solace-entry-widget	2.0.5	2026-09-25

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-TR2SQ4V	view source

Third-party hosts

Hosts outside welldoing.org 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
8kaxp4wlq8.execute-api.eu-west-2.amazonaws.com	connect	view source
a.storyblok.com	connect	view source
abtla2woyj.execute-api.eu-west-2.amazonaws.com	connect	view source
api.addressy.com	connect	view source
api.dmcdn.net	connect	view source
api.os.uk	connect	view source
api.pinterest.com	connect	view source
api.tumblr.com	connect	view source
app.storyblok.com	connect	view source
b.hatena.ne.jp	connect	view source
bookmark.hatenaapis.com	connect	view source
cdn.embed.ly	connect	view source
cdn.jsdelivr.net	connect	view source
cdnjs.cloudflare.com	connect	view source
challenges.cloudflare.com	script	view source
connect-js.stripe.com	connect	view source
connect.facebook.net	connect	view source
connect.mail.ru	connect	view source
connect.ok.ru	connect	view source
fast.wistia.com	connect	view source
fonts.googleapis.com	stylesheet connect	view source
gab.com	connect	view source
getpocket.com	connect	view source
github.com	connect	view source
graph.facebook.com	connect	view source
images.unsplash.com	connect	view source
img2.storyblok.com	connect	view source
js.stripe.com	connect	view source
linkedin.com	connect	view source
maps.googleapis.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
s3.eu-west-2.amazonaws.com	connect	view source
schema.org	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
stripe.com	connect	view source
telegram.me	connect	view source
tia1par9vf.execute-api.eu-west-2.amazonaws.com	connect	view source
twitter.com	connect	view source
u9bkhsxv7d.execute-api.eu-west-2.amazonaws.com	connect	view source
use.typekit.net	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.googletagmanager.com	iframe	view source
www.hollyhealth.io	connect	view source
www.instagram.com	connect	view source
www.instapaper.com	connect	view source
www.linkedin.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.twitter.com	connect	view source
www.w3.org	connect	view source
www.yoursite.com	connect	view source
www.youtube-nocookie.com	connect	view source
www.youtube.com	connect	view source
youtu.be	connect	view source
z2kcm50vc5.execute-api.eu-west-2.amazonaws.com	connect	view source
z9fq7ve352.execute-api.eu-west-2.amazonaws.com	connect	view source
zfjwqk4tvc.execute-api.eu-west-2.amazonaws.com	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 124) }. 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	2026-10-03	current
https://cdn.jsdelivr.net/npm/flv.js@VERSION/dist/flv.min.js	js library	not fetched	2026-10-03	current
https://cdn.jsdelivr.net/npm/hls.js@VERSION/dist/hls.min.js	js library	not fetched	2026-10-03	current
https://cdnjs.cloudflare.com/ajax/libs/dashjs/VERSION/dash.all.min.js	js library	not fetched	2026-10-03	current
https://challenges.cloudflare.com/turnstile/v0/api.js	js library	not fetched	2026-10-03	current
https://connect.facebook.net/en_US/sdk.js	js library	not fetched	2026-10-03	current
https://player.vimeo.com/api/player.js	js library	not fetched	2026-10-03	current
https://static.cloudflareinsights.com/beacon.min…85bb4c19e7a9bdbcba1788362987495	js library	not fetched	2026-10-03	current
https://welldoing.org/_next/static/chunks/6070.aff25695fb5545f1.js	js	6.4 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactP…rSoundCloud.4496df3b8d4285b4.js	js	2.5 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactPlayerWistia.7ea62bfcd2a0dd3d.js	js	3.1 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactPlayerYouTube.964d28ffdaaef597.js	js	4 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactP…rStreamable.e5dcc8b8e54bc6c3.js	js	2.5 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactP…yerMixcloud.ac090bd22598a97e.js	js	2.3 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactP…rFilePlayer.2ad06c48c78b1cb2.js	js	8.5 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactP…yerFacebook.1f2372af811e5241.js	js	2.8 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactPlayerKaltura.8693e1509e92477a.js	js	2.4 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactPlayerPreview.287192ff9b792038.js	js	2.6 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactP…DailyMotion.3bf5a2ceff1844dc.js	js	2.6 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactPlayerVidyard.0d668a19551fc5ab.js	js	2.5 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactPlayerVimeo.e3c10b8039b6d90f.js	js	3.2 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactPlayerMux.91b08c73a84c159b.js	js	4.9 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/reactPlayerTwitch.e4c2454782f502eb.js	js	2.7 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/9497-4865fdabede2fbb6.js	js	127.3 KB	2026-10-03	current
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https://welldoing.org/_next/static/chunks/webpack-0bde6c2b5668d27a.js	js	4.4 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/8007.dc977ef71f479048.js	js	10.8 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/8794.821915ca61ca3454.js	js	23.9 KB	2026-10-03	current
https://welldoing.org/_next/static/chunks/polyfills-42372ed130431b0a.js	js	110 KB	2026-10-03	current
https://welldoing.org/personalised-matching-service	html	123.5 KB	2026-10-03	2026-10-03
https://welldoing.org/find-a-therapist	html	148.5 KB	2026-10-03	2026-10-03
https://welldoing.org/article/scorpions-tuppence…s-honest-helpful-and-even-funny	html	246.4 KB	2026-10-03	2026-10-03
https://welldoing.org/article	html	413.7 KB	2026-10-03	2026-10-03
https://welldoing.org/	html	370.4 KB	2026-10-03	2026-10-03
https://welldoing.org/about-us	html	133.5 KB	2026-09-25	current
https://welldoing.org/article/bad-news-around-ch…ing-pregnant-women-more-anxious	html	253.5 KB	2026-09-25	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.

2026-10-03 first crawl

5 pages, 122 files, 5.1 MB; 29 libraries, 1 identifier, 72 third-party hosts
29 libraries added
- gtm
- cloudflare-email-decode
- @vitest/utils 5.0.2
- 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
- @clerk/ui 1.34.0
- @feathery/react 2.96.0
- and 17 more
1 identifier added
- GTM-TR2SQ4V Google Tag Manager container
73 third-party hosts added
122 files added

Questions about welldoing.org

How does PageSourceSearch know what welldoing.org 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 welldoing.org 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 welldoing.org?: 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 welldoing.org?: 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.