How does PageSourceSearch know what jesperhoy.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 jesperhoy.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 jesperhoy.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 jesperhoy.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

jesperhoy.dev

Built with p5 2.3.4. 5 pages and 11 stored files.

rank 2,052,629 1 library 0 identifiers 0 third-party hosts 0 crawls 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
p5	2.3.4	2026-09-25

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

The stored pages and scripts reference no host outside jesperhoy.dev.

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 11) }. 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://jesperhoy.dev/scripts/comments.js?423b3a0ee414d3b096ee6af6b563791c	js	3.4 KB	2026-09-25	current
https://jesperhoy.dev/katla/katla.js?7710820dabde17cc10f3c617b8fecc66	js	12.3 KB	2026-09-25	current
https://jesperhoy.dev/spirit-js?0e832e66f50b4ef7cf14c73be3a10efc	js	14.4 KB	2026-09-25	current
https://jesperhoy.dev/pl/script	js	3.6 KB	2026-09-25	current
https://jesperhoy.dev/alvar/alvar.js?adc6bdf00c6bc7d9837cff76a0c3237f	js	8.6 KB	2026-09-25	current
https://jesperhoy.dev/scripts/jhikon.js?f0a1c703f35708b777aef38f54abb35d	js	8.6 KB	2026-09-25	current
https://jesperhoy.dev/cool-stuff	html	7.2 KB	2026-09-25	current
https://jesperhoy.dev/my-favorite-software	html	16.8 KB	2026-09-25	current
https://jesperhoy.dev/atom	html	57.2 KB	2026-09-25	current
https://jesperhoy.dev/	html	9.7 KB	2026-09-25	current
https://jesperhoy.dev/revisiting-site-search-sqlite-as-a-search-engine	html	14.3 KB	2026-09-25	current

Timeline

No crawl has recorded a snapshot of this site yet; snapshots are written by every crawl from now on.

Questions about jesperhoy.dev

How does PageSourceSearch know what jesperhoy.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 jesperhoy.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 jesperhoy.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 jesperhoy.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.