How does PageSourceSearch know what universalviewer.dev 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 universalviewer.dev 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 universalviewer.dev?

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 universalviewer.dev?

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

universalviewer.dev

Built with three 0.149.0, swagger-ui-dist 5.33.0, mediaelement 7.1.0, reverie-stt-sdk 0.24.0, pdf.js 3.11.174, spectorjs 0.9.33, universalviewer 4.4.4. 1 page and 178 stored files, last crawled 2026-10-07.

rank 12,766,637 7 libraries 0 identifiers 22 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
three	0.149.0	2026-10-07
swagger-ui-dist	5.33.0	2026-10-07
mediaelement	7.1.0	2026-10-07
reverie-stt-sdk	0.24.0	2026-10-07
pdf.js	3.11.174	2026-10-07
spectorjs	0.9.33	2026-10-07
universalviewer	4.4.4	2026-10-07

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 universalviewer.dev 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
cdn.dashjs.org	connect	view source
cdn.jsdelivr.net	connect	view source
dashif.org	connect	view source
github.com	connect	view source
iiif.io	connect	view source
img.youtube.com	connect	view source
library.stanford.edu	connect	view source
purl.org	connect	view source
react.dev	connect	view source
schema.org	connect	view source
schemas.microsoft.com	connect	view source
tile.openstreetmap.org	connect	view source
time.akamai.com	connect	view source
universalviewer.io	connect	view source
unpkg.com	stylesheet	view source
wellcomelibrary.org	connect	view source
www.gstatic.com	connect	view source
www.idpf.org	connect	view source
www.smpte-ra.org	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 178) }. 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/[email protected]/examples/jsm/loaders/LottieLoader.js	js library	not fetched	2026-10-07	2026-10-07
https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js	js library	not fetched	2026-10-07	2026-10-07
https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js	js library	not fetched	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9973.8a535330a1f022489701.js	js library	6.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9964.1437137f045e0e4de8cd.js	js library	8.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9740.fa30c1fc2e1c2f5cec7a.js	js library	8.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9678.ee706352f5fafe7a84b0.js	js library	2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9676.e15a7748016067998a2a.js	js library	21.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9639.e349d020cbaec9880cf8.js	js library	4.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9408.7bb46ae4ae07e7bf1a4b.js	js library	22.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9397.3eff9f62c5ad8c3f3f3e.js	js library	27.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9366.408e84cbdfea4896d9b3.js	js library	18.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9044.a773fd8ea1315fc67ea6.js	js	6.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9043.703ca4af886ce7d5237a.js	js library	11.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9041.a7f7de74ad78f7f55511.js	js library	12 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9023.d429247a1c77ac5f7eec.js	js library	14.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/9009.2ecbfb075b4057d20868.js	js library	10 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/8888.1777d038ece7cec927cc.js	js library	8.2 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/8398.eb39d1be02e08994a20f.js	js library	24.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/8338.ce75497c439c8d30077f.js	js library	7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/8284.ea160acad566baba5f61.js	js library	11.5 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/8185.e7536745a873a3d58db3.js	js library	7.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/8136.962a8b365f193c0133ac.js	js	6.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7865.67f4de38e506f90f450e.js	js library	7.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7863.5e08dd35bb07f6a2c5c8.js	js library	3.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7857.15b5038448f93a0ef9fd.js	js library	7.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7854.2f92e8db35f3015842a0.js	js library	2.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7755.2455c89dc06b63d3d777.js	js library	9.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7673.b1de77c71962b6cadb80.js	js library	16.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7637.d719a922a85577255d0a.js	js library	3.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7569.4af7403cee5ecd83a7fa.js	js library	969 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7546.f6bc69d58319f5ed2e73.js	js library	3.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7111.c597e0eb7922c5e5bf8d.js	js library	27.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/7086.811d66a4a244acfc342d.js	js	270.2 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/6674.c9f1fb6008a6c3a4393b.js	js library	644 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/6653.f7210c9800721ad1efb5.js	js library	9.7 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/6520.7acf39a93cb7f321ca02.js	js	554.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/6299.1e1defa93d49019e503e.js	js	267.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/6270.d6e0455bb4b371a1d7c2.js	js library	24.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/6203.0ddf3fc1358e5af90cb5.js	js library	7.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/6190.bf86442b9da32c314995.js	js library	905 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/6124.1d7f245fee41bdd0bb98.js	js library	6.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/6120.e8423f2b8cd8789fbd67.js	js library	2.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/6104.5c4c471a60e15dd41a1b.js	js	39.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5946.bb8aa909ba57b0058342.js	js library	12.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5940.d9899a18374d7b4d73b7.js	js library	2.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5857.ee137cf621a3b21ce38e.js	js library	7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5811.1d84f00afbd7b01d26bb.js	js library	10.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5799.9b55c2b5a1af53f77ec4.js	js	328.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5709.83f42b5ee21159003c07.js	js library	2.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5641.65e0feb8b1a2fb68b9c2.js	js library	30.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5636.67c08b6f1fb32189133a.js	js library	623 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5576.c772feb1d6fd3ef939d5.js	js library	873 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5560.e4269f7d0297c39a4ce7.js	js	288.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5537.36031cdee18f90506d5a.js	js library	5.8 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/5415.2b3af470722b9f2437dc.js	js library	1.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5395.d9873b7814b1468bca95.js	js library	55.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5272.0902c71d6ffb8911417e.js	js library	22.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5233.c02615069969daec75ed.js	js library	11.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5179.1dab4ef2c494160c7312.js	js library	30.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5108.65c9f2518a44e4a9f847.js	js	301.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5078.0a57d9e11a8eda612128.js	js library	19.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/5028.590e4db681425aed422c.js	js library	23.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4893.3a0e724aec0a0c07cb18.js	js library	17.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4752.2104b6a7478db7613829.js	js library	77.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4666.24ae54c6de4121022764.js	js library	12.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4661.a06ae361f90331407b07.js	js library	1.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4651.ec002355c8455ad69e6d.js	js library	9.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4577.e542c3e93f3c1cbb42ab.js	js library	5.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4524.d403c8a809443ca5ad4b.js	js library	12.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4434.3b210f11efe9c01fe755.js	js library	7.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4429.d231dbeb4c19137a9863.js	js	6.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4340.c0e550dc0f773efb35eb.js	js library	887 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4139.9904ee9d43aced86d0a7.js	js library	3.8 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/4101.cc268860d5848cabb4c6.js	js library	824 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4105.c102a2a1c8c35dc30745.js	js library	20.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3989.0e8ca35c580d83d4c930.js	js	885.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/4029.59e2ebd946e67964fb18.js	js library	14.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3885.971cac6100964007b845.js	js	194.4 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/3813.20f9d2a9752fdd4a07b8.js	js library	6.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3794.d6eaabbb244f36c9c8e0.js	js library	6.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3800.b2a589b06036d5930147.js	js library	3.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3748.968654518767732a1be2.js	js library	6.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3708.e8c22d64935405d5281b.js	js	5.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3590.b5794876263ddc49586d.js	js library	10.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3584.e0f4a208f63f68a707b7.js	js library	623 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3557.7d1b710807842b39b61a.js	js library	2.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3485.037c269dd89610250820.js	js library	558 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3279.3706d3e572623629e4da.js	js library	18.1 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/3203.7aaf2bade1ce4efe971c.js	js library	901 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3155.dc839d7aaea7bb0ed8b5.js	js library	5.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3121.c146b4a10bbe7bc0d490.js	js library	9.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/3105.e224552188ae68090661.js	js library	77.1 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/2898.c0af11e6d724c725e052.js	js library	7.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2887.da3e7970c671784c4037.js	js library	90 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2866.f8d7d7c23f8f75a97c2f.js	js library	644 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2845.4494b362e50314c751de.js	js library	15.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2836.0de985ef12cd9035ae70.js	js library	24.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2788.6f9fec58829115400114.js	js library	867.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2778.56e72affd26a1578ebf0.js	js library	3.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2703.b2dc1f852515f6f2ad0a.js	js library	6.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2683.4116c4327daaa11c247d.js	js library	5.8 KB	2026-10-07	2026-10-07
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https://www.universalviewer.dev/umd/2206.1cf3214a73e02044b188.js	js library	17.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2180.6aa71b94f26f1529445a.js	js library	19.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2161.d5f830f8d1761fcdd46d.js	js library	644 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2152.d78f7b2fe0911dafb601.js	js library	4.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2103.03c557acc8f047de4c27.js	js library	2.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2084.34c89a980acf37e38eb6.js	js library	6.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2077.13a4944ed61b4b4ad184.js	js library	3.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2029.d1107bdbb525c7b648e6.js	js library	820 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/2020.384cae45ac0d53ca93eb.js	js library	2.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1948.e96b79d6cde220a22242.js	js library	560 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1939.f7dcf4b2c7d1ca5a426d.js	js	336.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1916.8140b10cf256e4fc7afd.js	js library	3.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1843.e40746fb281a1da339c3.js	js library	7.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1831.65dcf43c1237f63ad185.js	js	6.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1811.3eafaba092174b6a2829.js	js library	9.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1718.d1e0e76e5cde0a2b0e9d.js	js library	10.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1658.e6a94ecd8696de560b5c.js	js library	1.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1605.8a2b82484af3bb6b10ba.js	js library	12.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1592.9f627141b8db27851942.js	js library	4.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1528.84d71073b140cc0c08f8.js	js library	3.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1504.8b1b95bc902eec2ac093.js	js library	8.2 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1401.875f764a8da60e80772c.js	js library	6.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1277.caabf6b1f794518f7c75.js	js library	3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1245.c98626995a2517cb1672.js	js library	4.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1064.b3bd5eb0e81abfe24e62.js	js library	559 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1047.aa362b26e8b0c04876f1.js	js library	3.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1043.499061bcf8c2e251de26.js	js library	7.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/1000.bef5c329c0fd159c772a.js	js library	21.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/980.49ab0f35041d23acb2d3.js	js library	8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/944.9b5fdab6ed4dfdc3f619.js	js library	15.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/929.d7665c0d1a6cfbcff9df.js	js library	442 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/906.5bdd4a4a92e8c2706dae.js	js	173.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/882.578e3372fe390b4cb6fe.js	js	252.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/868.75e3cf115f24a14b7921.js	js library	6.3 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/845.a4d74b73532f68ab42bb.js	js library	930.1 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/740.b177d43b56a8ea226ed2.js	js	189.7 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/704.3b3bb5186ebe55b61cdf.js	js library	13.5 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/652.b62ade296086eaa95d09.js	js	152.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/619.05fbf9e3781be0554b09.js	js library	16.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/578.a198430343aacfa27827.js	js library	6.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/570.dffa257e9cbfc15fa2ab.js	js library	9.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/452.01c660717f29a68ae70e.js	js library	4.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/337.e0d759ba161692892524.js	js library	10.4 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/132.c826c98fcdc0cce5e32e.js	js	45.6 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/83.449cf6a827c9a5547b27.js	js library	6.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/80.3e23ab8f543325ca2538.js	js library	6.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/68.646e3e4e051f6c98aeaa.js	js library	805 B	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/pdfobject.d6d5dba06f71bde89133.js	js library	3.9 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/umd/UV.js	js	163.8 KB	2026-10-07	2026-10-07
https://www.universalviewer.dev/	html	45.7 KB	2026-10-07	2026-10-07

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.

2026-10-07 first crawl

1 page, 178 files, 9.3 MB; 7 libraries, 0 identifiers, 22 third-party hosts
7 libraries added
- universalviewer 4.4.4
- reverie-stt-sdk 0.24.0
- swagger-ui-dist 5.33.0
- mediaelement 7.1.0
- spectorjs 0.9.33
- three 0.149.0
- pdf.js 3.11.174
22 third-party hosts added
- unpkg.com
- iiif.io
- library.stanford.edu
- universalviewer.io
- wellcomelibrary.org
- www.w3.org
- schema.org
- www.gstatic.com
- cdn.jsdelivr.net
- cdn.dashjs.org
- www.youtube.com
- www.youtube-nocookie.com
- and 10 more
178 files added

Questions about universalviewer.dev

How does PageSourceSearch know what universalviewer.dev 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 universalviewer.dev 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 universalviewer.dev?: 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 universalviewer.dev?: 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.