How does PageSourceSearch know what fieldcalc.app 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 fieldcalc.app 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 fieldcalc.app?

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 fieldcalc.app?

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

fieldcalc.app

Built with gtm, @clerk/ui 1.34.0, dashjs 5.2.1, @inkeep/cxkit-js 0.5.119, recaptcha, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, google-apis, survey-creator-core 3.1.1, leaflet-rotate 0.2.8, @revenuecat/purchases-js-hybrid-mappings 19.3.1 and more. 5 pages and 117 stored files, last crawled 2026-10-02.

rank 280,263 25 libraries 1 identifier 29 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
gtm		2026-10-02
@clerk/ui	1.34.0	2026-10-02
dashjs	5.2.1	2026-10-02
@inkeep/cxkit-js	0.5.119	2026-10-02
recaptcha		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
google-apis		2026-10-02
survey-creator-core	3.1.1	2026-10-02
leaflet-rotate	0.2.8	2026-10-02
@revenuecat/purchases-js-hybrid-mappings	19.3.1	2026-10-02
ovenplayer	0.10.54	2026-10-02
graphql-playground-react	1.7.28	2026-10-02
@revenuecat/purchases-js	1.64.0	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@gstat/leaflet-gesture-handling	1.2.8	2026-10-02
@memori.ai/memori-webcomponent	8.3.3	2026-10-02
@tsocial/tvweb-sdk	5.38.6	2026-10-02
@formbird/angular-elements	8.5.10	2026-10-02
jupyter-leaflet	0.20.0	2026-10-02
leaflet	1.9.4	2026-09-24
mealz-injector	2.0.3	2026-09-24
stripe-js	9.7.0	2026-09-24
@zephr/browser	1.9.1	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-MN5KGGVP	view source

Third-party hosts

Hosts outside fieldcalc.app 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.open-meteo.com	connect	view source
api.revenuecat.com	connect	view source
apis.google.com	connect	view source
apps.apple.com	connect	view source
cdn.paddle.com	connect	view source
chatgpt.com	connect	view source
claude.ai	connect	view source
da08ctfrofx1b.cloudfront.net	connect	view source
e.revenue.cat	connect	view source
firebase.google.com	connect	view source
fonts.googleapis.com	connect	view source
github.com	connect	view source
grok.com	connect	view source
js.stripe.com	connect	view source
leafletjs.com	connect	view source
play.google.com	connect	view source
react.dev	connect	view source
schema.org	connect	view source
svelte.dev	connect	view source
use.typekit.net	connect	view source
www.facebook.com	connect	view source
www.garmin.com	connect	view source
www.google.com	connect	view source
www.googletagmanager.com	iframe	view source
www.instagram.com	connect	view source
www.opengis.net	connect	view source
www.perplexity.ai	connect	view source
www.topografix.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 117) }. 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://apis.google.com/js/api.js	js library	not fetched	2026-10-02	current
https://www.google.com/recaptcha/api.js	js library	not fetched	2026-10-02	current
https://www.google.com/recaptcha/enterprise.js?render=	js library	not fetched	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/8661.0c25f9e4fc2ec199.js	js	1021 B	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/9652.f7fda5d97b3c6870.js	js	1.8 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/8408.1388081723be99b6.js	js	3.8 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/8278.0277377c02174181.js	js	4.3 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/8156.79255d78a830d013.js	js	33.7 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/7989.15099c4a757f1590.js	js	827 B	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/7733.0a8860612070f89d.js	js	3.2 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/7415.32e0a364152dfd24.js	js	3.7 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/6940.9f481a1e121a9d94.js	js	26.9 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/6431.465d391a6c4dd3e2.js	js	3.3 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/6389.cd6dadf3cca509c5.js	js	8.6 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/6359.e8d0474fba3b6d15.js	js	3.7 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/6160.996190b04b2e2544.js	js	10.4 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/5804.fbbefb56dad46658.js	js	5.8 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/6014.0af284d578afdf8a.js	js	3.4 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/5690.778f5b7df2fe5e51.js	js	8.4 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/5096.e73771477614a220.js	js	5 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4813.a04bc08ca052f65b.js	js	3.6 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/4690.c3a95dba067f607f.js	js	2.9 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4508.cfb4dc0cd321d765.js	js	6.2 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4384.1fa6a35f4a46125d.js	js	4.2 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4364.cea26f39abb61022.js	js	5.4 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4256.49fa661eae2dbe65.js	js	5.6 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4194.78d57d50e945722f.js	js	4.9 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4240.b9f99dc50bd633dc.js	js	9.8 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4179.c4ae944aa0d184d8.js	js	2.9 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/4158.f09853e07d97717a.js	js	3.8 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/3974.42c0bb813bce3da9.js	js	3.5 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/3791.f8e78f5bd85ccc7f.js	js	1.7 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/3385.d5e27dc355748290.js	js	3.1 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/3224.5602ec8b8b250ee4.js	js	126.6 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/2231.7a1c7c90c8c1064a.js	js	4.3 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/3074.5f7205491ac360cf.js	js	23.3 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/2224.8baec685841df681.js	js	3.8 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/1903.7f54e77e0674c178.js	js	3.8 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/2017.d634bb9d8e8a4e7f.js	js	3.1 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/1170.89d14d0135c17a55.js	js	11.3 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/1580.2eb168b2e4c71407.js	js	5.8 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/1135.e3d07598d2172a5e.js	js	8.3 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/903.6e2a90fcd015edf9.js	js	3.2 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/855.1da42b9f2d79bc57.js	js	6.6 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/510.befa2e6d34942ee2.js	js	5.2 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/355.b680b9b6d27c1841.js	js	2.1 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/350.c6f699dca21da59d.js	js	1.6 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/285.66d538d675ca295d.js	js	23.5 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/d0deef33.0379166a4ec23470.js	js	145 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/fde08e1f.3314a9efa3f041ed.js	js	721.6 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/682-0572ca6011d5752e.js	js	12.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/app/(m…/page-9111e43a64b47db0.js	js	13.3 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/4096-75630e62ae92c76a.js	js	84.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/app/(m…/about/page-f6657f46213624d3.js	js	13.1 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/app/(m…/page-9f8caa7515e6f3d6.js	js	25.1 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/7743-33e22918220bd939.js	js	5.2 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/app/(m…/blog/page-d6b8420b0e424a8e.js	js	2.6 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/webpack-eb60019c5dc731c6.js	js	6.1 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/polyfills-42372ed130431b0a.js	js	110 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/app/not-found-42aa45fb961c8d03.js	js	1.2 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/app/layout-d0a47e0da447f3b3.js	js	5.3 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/2110-1582de9ad5dc7d65.js	js	10.5 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/3304-2e3ba5b89107e32b.js	js	8.2 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/6229-d419bc69cebf49e7.js	js	10.9 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/8685-b555106b12bd0c47.js	js	31.9 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/7c86ec74-ca6968de81e2265e.js	js	89.4 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/app/page-54c953fb2c1a0abc.js	js	114.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/801-a308269b3b9e1f94.js	js	9.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/1041-0bb34958795e4903.js	js	119.5 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/app/(m…/layout-8744c9dbaf4c4a0c.js	js	3.2 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/401-891b1c02074fae81.js	js	34.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/9627-8b546ec875458026.js	js	7.7 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/5458-5ee5320f4670f379.js	js	5.2 KB	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/1592-0043537a2b53bc48.js	js	4.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/1068-52567b6878f8e552.js	js	539.5 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/7322-ef7b675828062b2e.js	js	8.7 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/6103-ba7d2791698f15f8.js	js	8.7 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/5878-1ff8172a7ebd802c.js	js	12.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/6228-0ddbf934fef1677c.js	js	22.4 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/b1644e8c-4472bd1640f13c5b.js	js	213 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/main-app-a7ce3581b898be72.js	js	471 B	2026-10-02	current
https://fieldcalc.app/_next/static/chunks/2117-940046b0ec61dd88.js	js	121 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/fd9d1056-58d55ef518c56883.js	js	168.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/contact	html	367.3 KB	2026-10-02	2026-10-02
https://fieldcalc.app/about	html	412.6 KB	2026-10-02	2026-10-02
https://fieldcalc.app/pricing	html	319.8 KB	2026-10-02	2026-10-02
https://fieldcalc.app/blog	html	469.1 KB	2026-10-02	2026-10-02
https://fieldcalc.app/	html	512 KB	2026-10-02	2026-10-02
https://fieldcalc.app/_next/static/chunks/8156.d83890a3fbd2bc8d.js	js	32.1 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/6434.e239db8d5fdf6545.js	js	5.6 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/682-fe348f9e92a556be.js	js	12.8 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/4096-083c931ebd7e00e8.js	js	84.8 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/app/(m…/page-6784d7efb9a62317.js	js	13.2 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/app/(m…/about/page-2c355ac0935f897c.js	js	11 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/app/(m…/page-4e64f325cfd1d486.js	js	22.3 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/7743-e28843790ed49e1f.js	js	5.2 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/app/(m…/blog/page-45649ac20697e16d.js	js	2.5 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/webpack-b76707c079529a8d.js	js	6.1 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/app/not-found-a059234f0aa52382.js	js	1.2 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/app/layout-ea1f22c2ea333a16.js	js	5.3 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/2110-5c9e36bd6262195f.js	js	7.4 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/3304-8378078717a798b7.js	js	11.2 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/6229-1b0b4a8131871a04.js	js	10.9 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/app/page-6bcac27ba1685236.js	js	69.6 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/503-c822caf2194aa4a8.js	js	8.6 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/1188-8cbffc16c812e589.js	js	119.4 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/app/(m…/layout-2fb6215b7d493ee4.js	js	3.2 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/401-5d07af8a67fc0cd7.js	js	33.7 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/220-d85616d330494cd8.js	js	8.7 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/1592-2b1c712ec3ce1505.js	js	4.8 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/1068-6ebbf5c55ba09bfd.js	js	543.8 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/6219-ddf79b9b4c606c8a.js	js	13.1 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/5878-0226eee5690b4640.js	js	12.8 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/2972-08c42c2c7e2b7a8b.js	js	20.1 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/b1644e8c-14e55de8f6194671.js	js	213 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/2117-5918b1b0c4b6a817.js	js	121 KB	2026-09-24	current
https://fieldcalc.app/_next/static/chunks/fd9d1056-acb1fad24861cb9c.js	js	168.8 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

5 pages, 88 files, 5.1 MB; 21 libraries, 1 identifier, 29 third-party hosts
21 libraries added
- gtm
- @inkeep/cxkit-js 0.5.119
- @clerk/ui 1.34.0
- 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
- @tsocial/tvweb-sdk 5.38.6
- @revenuecat/purchases-js-hybrid-mappings 19.3.1
- and 9 more
1 identifier added
- GTM-MN5KGGVP Google Tag Manager container
29 third-party hosts added
- www.googletagmanager.com
- react.dev
- www.w3.org
- fonts.googleapis.com
- use.typekit.net
- apps.apple.com
- play.google.com
- www.facebook.com
- www.instagram.com
- chatgpt.com
- claude.ai
- www.perplexity.ai
- and 17 more
88 files added

Questions about fieldcalc.app

How does PageSourceSearch know what fieldcalc.app 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 fieldcalc.app 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 fieldcalc.app?: 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 fieldcalc.app?: 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.