How does PageSourceSearch know what napkin.io 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 napkin.io 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 napkin.io?

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 napkin.io?

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

napkin.io

Built with @findify/bundle 7.1.108, bromcom-ui 2.12.3, @miso.ai/client-sdk 1.13.1, c2pa 0.30.17, chartjs-adapter-date-fns 3.0.0, @inkeep/cxkit-js 0.5.119, @feathery/react 2.96.0, onetrust, @reachfive/identity-ui 2.1.0, @partslogic/ui 2.0.7, @cognigy/webchat 3.50.0, tableexport.jquery.plugin 1.33.0 and more. 5 pages and 201 stored files, last crawled 2026-10-03.

rank 1,952,540 49 libraries 0 identifiers 28 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
@findify/bundle	7.1.108	2026-10-03
bromcom-ui	2.12.3	2026-10-03
@miso.ai/client-sdk	1.13.1	2026-10-03
c2pa	0.30.17	2026-10-03
chartjs-adapter-date-fns	3.0.0	2026-10-03
@inkeep/cxkit-js	0.5.119	2026-10-03
@feathery/react	2.96.0	2026-10-03
onetrust		2026-10-03
@reachfive/identity-ui	2.1.0	2026-10-03
@partslogic/ui	2.0.7	2026-10-03
@cognigy/webchat	3.50.0	2026-10-03
tableexport.jquery.plugin	1.33.0	2026-10-03
@eppo/js-client-sdk	3.18.0	2026-10-03
easymde	2.21.0	2026-10-03
@foxy.io/elements	1.53.3	2026-10-03
klaviyo		2026-10-03
@aurolabs/auro-back-to-top	1.1.0	2026-10-03
@stlite/mountable	0.75.0	2026-10-03
spirhal	4.5.0	2026-10-03
typesense-docsearch.js	3.4.1	2026-10-03
@oiz/stzh-components	4.16.0	2026-10-03
volantis-static	0.0.1761982841160	2026-10-03
vue3-sfc-loader	0.9.5	2026-10-03
@covalent/components	11.22.1	2026-10-03
filterizr	2.2.4	2026-10-03
docs-searchbar.js	2.5.0	2026-10-03
@algolia/algoliasearch-netlify-frontend	1.0.15	2026-10-03
@pdftron/pdfjs-express-viewer	8.7.5	2026-10-03
highlightjs	9.16.2	2026-10-03
@memori.ai/memori-webcomponent	8.3.3	2026-10-03
@descope/web-components-ui	3.21.0	2026-10-03
@pdf-lib/fontkit	1.1.1	2026-10-03
@live-codes/monaco-editor	0.3.1	2026-10-03
@accusoft/pdf-viewer	3.11.158639	2026-10-03
@apollographql/graphql-playground-react	1.7.42	2026-10-03
@ant-design/x	2.9.0	2026-10-03
@saasquatch/mint-components	2.5.1	2026-10-03
@widgetti/solara-vuetify-app	10.1.1	2026-10-03
xlsx-populate	1.21.0	2026-10-03
@wangeditor/editor	5.1.23	2026-10-03
sheryjs	1.0.0-beta.0.1.8	2026-10-03
peachy-booking-flow	1.11.6	2026-10-03
@story-telling-reporter/react-embed-code-generator	2.2.20	2026-10-03
@percy.ai/hvs-funnel-overlay	0.5.13	2026-10-03
comindware.core.ui	2.1.149	2026-10-03
vf-widgets	0.2.48	2026-10-03
@wix/image	1.454.0	2026-10-03
amazon-ivs-web-broadcast	1.40.0	2026-10-03
@chativa/connector-directline	0.15.0	2026-10-03

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 napkin.io 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
apis.google.com	connect	view source
app.termly.io	connect	view source
cdn.cookielaw.org	connect	view source
cdn.heapanalytics.com	connect	view source
cdn.jsdelivr.net	connect	view source
datatracker.ietf.org	connect	view source
developer.mozilla.org	connect	view source
discord.gg	connect	view source
docs.python.org	connect	view source
firebase.googleapis.com	connect	view source
firebaseinstallations.googleapis.com	connect	view source
fonts.googleapis.com	connect	view source
github.com	connect	view source
go.microsoft.com	connect	view source
klaviyo.com	connect	view source
klaviyo.tech	connect	view source
napkin2.firebaseio.com	connect	view source
pypi.org	connect	view source
raw.githubusercontent.com	connect	view source
reactjs.org	connect	view source
static.klaviyo.com	connect	view source
twitter.com	connect	view source
use.typekit.net	connect	view source
vercel.live	connect	view source
www.example.com	connect	view source
www.googletagmanager.com	connect	view source
www.npmjs.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 201) }. 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.cookielaw.org/scripttemplates/otSDKStub.js	js library	not fetched	2026-10-03	current
https://static.klaviyo.com/onsite/js/klaviyo.js?company_id=XxaRJP	js library	not fetched	2026-10-03	current
https://www.napkin.io/_next/static/chunks/9994.f1e4fc7ecb9004f2.js	js	11.5 KB	2026-10-03	current
https://www.napkin.io/_next/static/chunks/9800.37feb1601de16be8.js	js	18.6 KB	2026-10-03	current
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https://www.napkin.io/_next/static/chunks/9627.a5b4c27a35e06be0.js	js	897 B	2026-10-03	current
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https://www.napkin.io/_next/static/chunks/9400.3fce26ef3618ab74.js	js	2.9 KB	2026-10-03	current
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https://www.napkin.io/_next/static/chunks/8842.5c3855fbc6300804.js	js	852 B	2026-10-03	current
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https://www.napkin.io/_next/static/chunks/8622.8b53705e675f376b.js	js	836 B	2026-10-03	current
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https://www.napkin.io/_next/static/chunks/8401.3288ca5ad817f3c5.js	js	21.5 KB	2026-10-03	current
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https://www.napkin.io/changelog	html	41.9 KB	2026-10-03	current
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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.

2026-10-03 first crawl

5 pages, 199 files, 10.1 MB; 49 libraries, 0 identifiers, 28 third-party hosts
49 libraries added
- tableexport.jquery.plugin 1.33.0
- comindware.core.ui 2.1.149
- @findify/bundle 7.1.108
- @aurolabs/auro-back-to-top 1.1.0
- @oiz/stzh-components 4.16.0
- docs-searchbar.js 2.5.0
- @foxy.io/elements 1.53.3
- @ant-design/x 2.9.0
- vf-widgets 0.2.48
- @pdftron/pdfjs-express-viewer 8.7.5
- @memori.ai/memori-webcomponent 8.3.3
- @accusoft/pdf-viewer 3.11.158639
- and 37 more
28 third-party hosts added
199 files added

Questions about napkin.io

How does PageSourceSearch know what napkin.io 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 napkin.io 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 napkin.io?: 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 napkin.io?: 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.