How does PageSourceSearch know a website uses Google AdSense (legacy show_ads.js)?

By the source itself: The legacy ad unit loads show_ads.js from the pagead path on googlesyndication.com. PageSourceSearch stores the raw HTML and first-party JavaScript of each crawled site and matches the keyword byte for byte, so every listed site's stored source contains it.

Is this a complete list of websites using Google AdSense (legacy show_ads.js)?

No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 20,762 websites that do; the count is the index's estimate at the time the list was computed. Run the keyword as a search to page through all of them, or add a kind or date filter.

How do I find websites that use Google AdSense (legacy show_ads.js) together with another technology?

Search for both keywords at once: several terms separated by spaces must all be found on the same site, or with the Same page toggle in the same page. For example pagead/show_ads.js with wp-content/plugins/ lists the WordPress sites that use Google AdSense (legacy show_ads.js).

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Websites using Google AdSense (legacy show_ads.js)

show_ads.js is the synchronous AdSense ad code that preceded adsbygoogle.js. About 20,762 websites in the PageSourceSearch index contain the code that reveals it; the 50 highest-ranked are listed below.

How is Google AdSense (legacy show_ads.js) detected?

The legacy ad unit loads show_ads.js from the pagead path on googlesyndication.com. The discovery keyword is the exact bytes PageSourceSearch looks for in every stored page and script:

pagead/show_ads.js Search the index for it

A literal is matched byte for byte, case-sensitively. Combine it with another keyword, a domain, a kind or a date filter on the search page to narrow the list. About Google AdSense (legacy show_ads.js)

Top 50 websites using Google AdSense (legacy show_ads.js)

Ranked by the domain's position in the crawl's ranked list (Common Crawl harmonic centrality), highest first. view source opens the stored page or script with the match highlighted. Computed 2026-09-30 16:07:10 UTC.

#	Website	Rank	Found in
1	vim.org	533	html https://www.vim.org/	view source profile
2	ipsnews.net	742	html https://www.ipsnews.net/about-us/	view source profile
3	artdaily.com	1,145	html https://artdaily.com/v2/PhotoGalleries.aspx	view source profile
4	techpatio.com	1,811	html https://techpatio.com/2026/articles/…-it-admins-need-to-know	view source profile
5	robotstxt.org	2,870	html http://www.robotstxt.org/	view source profile
6	goessner.net	4,033	html https://goessner.net/	view source profile
7	jqueryscript.net	5,739	html https://www.jqueryscript.net/about/	view source profile
8	armyrecognition.com	5,800	html https://www.armyrecognition.com/	view source profile
9	yslow.org	5,804	html https://yslow.org/	view source profile
10	newsru.com	5,807	html https://www.newsru.com/	view source profile
11	nirsoft.net	6,169	html https://www.nirsoft.net/search_freeware.html	view source profile
12	livedoor.com	6,245	html https://www.livedoor.com/	view source profile
13	blogsome.com	7,529	html https://blogsome.com/	view source profile
14	rssboard.org	7,693	html https://www.rssboard.org/	view source profile
15	redmine.org	8,151	html https://www.redmine.org/	view source profile
16	lrytas.lt	8,153	js https://www.lrytas.lt/js/adn.js	view source profile
17	webexhibits.org	8,258	html https://www.webexhibits.org/calendars/	view source profile
18	americanrhetoric.com	8,925	html https://www.americanrhetoric.com/speechbank.htm	view source profile
19	cakephp.org	9,574	html https://cakephp.org/privacy	view source profile
20	manpagez.com	9,973	html https://manpagez.com/man/7/ascii/	view source profile
21	kegel.com	10,437	html https://kegel.com/	view source profile
22	quotationspage.com	10,963	html https://www.quotationspage.com/weblog/	view source profile
23	htmlhelp.com	11,137	html https://htmlhelp.com/reference/	view source profile
24	worldtimezone.com	11,566	html https://worldtimezone.com/	view source profile
25	regexlib.com	12,405	html https://regexlib.com/(X(1)A(m4nJj5bd…=/Search.aspx	view source profile
26	clker.com	12,748	html http://www.clker.com/	view source profile
27	spaceweather.com	13,258	html https://spaceweather.com/glossary/sunspotnumber.html	view source profile
28	boutell.com	13,437	html https://www.boutell.com/contact/	view source profile
29	googleguide.com	14,198	html https://www.googleguide.com/category/overview/index.html	view source profile
30	audionautix.com	14,731	html https://audionautix.com/free-music/acid-jazz	view source profile
31	cacert.org	15,628	html https://wiki.cacert.org/FAQ/Privileges	view source profile
32	elperuano.pe	16,466	html https://elperuano.pe/	view source profile
33	codecguide.com	16,830	html https://codecguide.com/	view source profile
34	vanyog.com	16,999	html https://vanyog.com/index2.php	view source profile
35	i-programmer.info	17,139	html https://www.i-programmer.info/	view source profile
36	learnoutloud.com	17,308	html https://www.learnoutloud.com/content/blog/	view source profile
37	br-linux.org	18,741	html https://br-linux.org/2008/01/download.html	view source profile
38	paint.net	19,799	html https://paint.net/	view source profile
39	firstcry.com	20,219	html https://www.firstcry.com/store-locator?ref2=topstrip	view source profile
40	youm7.com	20,674	html https://www.youm7.com/	view source profile
41	visualdictionaryonline.com	21,959	html https://visualdictionaryonline.com/clothing-articles.php	view source profile
42	coker.com.au	22,057	html https://www.coker.com.au/	view source profile
43	bloggingheads.tv	22,503	html https://bloggingheads.tv/	view source profile
44	1wt.eu	22,821	html https://1wt.eu/	view source profile
45	artcyclopedia.com	23,219	html http://www.artcyclopedia.com/history/post-impressionism.html	view source profile
46	linuxvirtualserver.org	23,286	html https://linuxvirtualserver.org/	view source profile
47	yowindow.com	23,379	html https://yowindow.com/	view source profile
48	esciencenews.com	23,477	html https://esciencenews.com/articles/20…omesticated.our.genomes	view source profile
49	palmvrienden.net	24,168	html http://palmvrienden.net/wiki/Hoofdpagina	view source profile
50	moemesto.ru	24,336	html http://moemesto.ru/login/	view source profile

How it appears in the source

From vim.org (html):

<script type="text/javascript" src="//pagead2.googlesyndication.com/pagead/show_ads.js"> </script>

See every site: search for pagead/show_ads.js

Questions about finding Google AdSense (legacy show_ads.js)

How does PageSourceSearch know a website uses Google AdSense (legacy show_ads.js)?: By the source itself: The legacy ad unit loads show_ads.js from the pagead path on googlesyndication.com. PageSourceSearch stores the raw HTML and first-party JavaScript of each crawled site and matches the keyword byte for byte, so every listed site's stored source contains it.
Is this a complete list of websites using Google AdSense (legacy show_ads.js)?: No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 20,762 websites that do; the count is the index's estimate at the time the list was computed. Run the keyword as a search to page through all of them, or add a kind or date filter.
How do I find websites that use Google AdSense (legacy show_ads.js) together with another technology?: Search for both keywords at once: several terms separated by spaces must all be found on the same site, or with the Same page toggle in the same page. For example pagead/show_ads.js with wp-content/plugins/ lists the WordPress sites that use Google AdSense (legacy show_ads.js).

Websites using Google AdSense (legacy show_ads.js)

How is Google AdSense (legacy show_ads.js) detected?

Top 50 websites using Google AdSense (legacy show_ads.js)

How it appears in the source

Questions about finding Google AdSense (legacy show_ads.js)

More in Advertising and pixels