How does PageSourceSearch know what covariants.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 covariants.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 covariants.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 covariants.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

covariants.org

Built with @clerk/ui 1.34.0, dashjs 5.2.1, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, @brainfish-ai/nudge-widget 0.1.3, ovenplayer 0.10.54, graphql-playground-react 1.7.28, @recogito/annotorious 2.7.14, @stytch/vanilla-js 6.3.0, @tsocial/tvweb-sdk 5.38.6, @everymatrix/player-profile-dashboard 1.21.0 and more. 1 page and 200 stored files, last crawled 2026-10-02.

rank 601,918 17 libraries 0 identifiers 80 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
@clerk/ui	1.34.0	2026-10-02
dashjs	5.2.1	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
@brainfish-ai/nudge-widget	0.1.3	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
@stytch/vanilla-js	6.3.0	2026-10-02
@tsocial/tvweb-sdk	5.38.6	2026-10-02
@everymatrix/player-profile-dashboard	1.21.0	2026-10-02
@story-telling-reporter/react-embed-code-generator	2.2.20	2026-10-02
@percy.ai/your-team	1.1.10	2026-10-02
@feathery/react	2.96.0	2026-09-24
kore-web-sdk	11.28.1	2026-09-24
@iplookup/country-extra	1.0.20260923	2026-09-24

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 covariants.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
academic.oup.com	connect	view source
api.pinterest.com	connect	view source
api.tumblr.com	connect	view source
assets.publishing.service.gov.uk	connect	view source
avatars.githubusercontent.com	connect	view source
avatars0.githubusercontent.com	connect	view source
avatars1.githubusercontent.com	connect	view source
avatars2.githubusercontent.com	connect	view source
avatars3.githubusercontent.com	connect	view source
b.hatena.ne.jp	connect	view source
bookmark.hatenaapis.com	connect	view source
connect.mail.ru	connect	view source
connect.ok.ru	connect	view source
cov-lineages.org	connect	view source
cov-spectrum.org	connect	view source
creativecommons.org	connect	view source
doi.org	connect	view source
drive.google.com	connect	view source
elifesciences.org	connect	view source
fonts.googleapis.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
investors.modernatx.com	connect	view source
jamanetwork.com	connect	view source
jamesscottbrown.com	connect	view source
jbloomlab.github.io	connect	view source
journals.plos.org	connect	view source
jvi.asm.org	connect	view source
linkedin.com	connect	view source
neherlab.org	connect	view source
nextjs.com	connect	view source
nextstrain.org	connect	view source
ourworldindata.org	connect	view source
papers.ssrn.com	connect	view source
pinterest.com	connect	view source
plausible.io	connect	view source
pubmed.ncbi.nlm.nih.gov	connect	view source
reactjs.org	connect	view source
research.fhcrc.org	connect	view source
science.sciencemag.org	connect	view source
service.weibo.com	connect	view source
social-plugins.line.me	connect	view source
telegram.me	connect	view source
theo.io	connect	view source
translate.google.com	connect	view source
twitter.com	connect	view source
use.typekit.net	connect	view source
virological.org	connect	view source
vk.com	connect	view source
wellcomeopenresearch.org	connect	view source
work.facebook.com	connect	view source
www.ahri.org	connect	view source
www.biorxiv.org	connect	view source
www.bmj.com	connect	view source
www.cdc.gov	connect	view source
www.cdph.ca.gov	connect	view source
www.cell.com	connect	view source
www.cogconsortium.uk	connect	view source
www.epicov.org	connect	view source
www.facebook.com	connect	view source
www.gisaid.org	connect	view source
www.gnu.org	connect	view source
www.gov.uk	connect	view source
www.instapaper.com	connect	view source
www.livejournal.com	connect	view source
www.medrxiv.org	connect	view source
www.nature.com	connect	view source
www.ncbi.nlm.nih.gov	connect	view source
www.nejm.org	connect	view source
www.reddit.com	connect	view source
www.researchsquare.com	connect	view source
www.sciencedirect.com	connect	view source
www.sentinella.ch	connect	view source
www.thelancet.com	connect	view source
www.tumblr.com	connect	view source
www.w3.org	connect	view source
www.who.int	connect	view source
wwwnc.cdc.gov	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 200) }. 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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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, 200 files, 3.3 MB; 14 libraries, 0 identifiers, 80 third-party hosts
14 libraries added
- 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
- @everymatrix/player-profile-dashboard 1.21.0
- @clerk/ui 1.34.0
- @story-telling-reporter/react-embed-code-generator 2.2.20
- @brainfish-ai/nudge-widget 0.1.3
- @tsocial/tvweb-sdk 5.38.6
- and 2 more
80 third-party hosts added
- github.com
- reactjs.org
- www.w3.org
- fonts.googleapis.com
- use.typekit.net
- cov-lineages.org
- plausible.io
- www.facebook.com
- graph.facebook.com
- b.hatena.ne.jp
- bookmark.hatenaapis.com
- www.instapaper.com
- and 68 more
200 files added

Questions about covariants.org

How does PageSourceSearch know what covariants.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 covariants.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 covariants.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 covariants.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.