PageSourceSearch / Technologies / JavaScript libraries / PDF.js JavaScript libraries
Websites using PDF.js
PDF.js is Mozilla's PDF renderer in JavaScript.
About 36,835 websites in the PageSourceSearch index contain the code that reveals it; the 50 highest-ranked are listed below.
How is PDF.js detected?
The site's code points GlobalWorkerOptions.workerSrc at pdf.worker.js, or the page loads it. The discovery keyword is the exact bytes PageSourceSearch looks for in every stored page and script:
pdf.worker 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 PDF.js
Top 50 websites using PDF.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 2026-09-29 20:04:02 UTC.
# Website Rank Found in
1
semanticscholar.org 328
js https://cdn.semanticscholar.org/f9b8…/js/BrowserEntry.tsx.js
view source profile
2
aaa.com 410
js https://discounts.acg.aaa.com/main.0a9111d7da9fa451.js
view source profile
3
fortune.com 435
js https://fortune.com/_next/static/chu…454.0783a67ca169a296.js
view source profile
4
elespanol.com 514
js https://s3.elespanol.com/assets_js/w…/v2//vendors/pdf/pdf.js
view source profile
5
evernote.com 744
js https://evernote.com/_next/static/ch…82d.27fa700ff60746d6.js
view source profile
6
vedomosti.ru 922
js https://cdn10.vedomosti.ru/1.7.161/a…geNewspaper-d88aaf2c.js
view source profile
7
pdffiller.com 1,064
js https://mkt-cf.pdffiller.com/fronten…/65113/LoginModalApp.js
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8
dol.gov 1,186
js https://www.dol.gov/sites/dolgov/fil…Lsv5NeIGl0W-df3wDP71baA
view source profile
9
gumroad.com 1,350
js https://assets.gumroad.com/vite/asse…pdf.worker-BvDrd3Hy.mjs
view source profile
10
fifa.com 1,451
js https://www.fifa.com/static/js/3145.8cf46a90.chunk.js
view source profile
11
usp.br 1,513
js https://www5.usp.br/wp-content/plugi…?x34176&ver=2.4.20
view source profile
12
scoopearth.com 1,534
js https://scoopearth.com/wp-content/pl…/js/frontend.js?ver=5.4
view source profile
13
savedelete.com 1,575
js https://savedelete.com/static/js/2983.01c4eb9b.chunk.js
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14
pixlr.com 1,886
js https://pixlr.com/dist/editor.73213e1d3e85caebae18.js
view source profile
15
sciencebasedtargets.org 2,024
js https://sciencebasedtargets.org/vite…/PDFViewer-BWPZfbBg.js
view source profile
16
docusign.com 2,061
js https://www.docusign.com/_marketing/…770.1c6525a32266d413.js
view source profile
17
wetransfer.com 2,098
js https://cdn.wetransfer.com/_next/sta…/34q1irgkcq98u.js
view source profile
18
freshbooks.com 2,190
js https://www.freshbooks.com/_next/sta…768.64465e7e47ed5804.js
view source profile
19
kidshelpphone.ca 2,284
js https://kidshelpphone.ca/wp-content/…dflip.min.js?ver=2.4.37
view source profile
20
apnic.net 2,341
js https://orbit.apnic.net/static/commu…_thread.8c00ad15c33b.js
view source profile
21
affirm.com 2,565
js https://www.affirm.com/906a09f8-35277a33194f0ac8ebd5.js
view source profile
22
zippia.com 2,664
js https://static.zippia.com/ui-router/…ter-c9bafc602b7f9129.js
view source profile
23
esri.com 2,678
js https://webapps-cdn.esri.com/CDN/one-form/one-form.js
view source profile
24
e-enfance.org 2,972
html https://e-enfance.org/
view source profile
25
warc.com 3,084
js https://www.warc.com/_next/static/ch…5b3-0913cbaa908ae545.js
view source profile
26
etsi.org 3,091
html https://www.etsi.org/
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27
comodo.com 3,193
js https://cam.comodo.com/static/js/main.f41dddf0.js
view source profile
28
heyzine.com 3,221
html https://heyzine.com/
view source profile
29
regex101.com 3,227
js https://regex101.com/static/vendors-…be5b36ffd11ee7.chunk.js
view source profile
30
ilovepdf.com 3,258
js https://www.ilovepdf.com/js/pdfjs/pdf.min.js
view source profile
31
ellenmacarthurfoundation.org 3,447
js https://www.ellenmacarthurfoundation…3679115a7396e71adc0f.js
view source profile
32
itif.org 3,538
js https://itif.org/dflip/js/dflip.js
view source profile
33
gocardless.com 3,649
js https://gocardless.com/content-platf…ffbd20af5f4445526f3c.js
view source profile
34
geekflare.com 3,930
js https://affiliate.geekflare.com/_nex…442.68c089d2cf6db47c.js
view source profile
35
eldiario.es 4,083
js https://www.eldiario.es/vendor.h-bae9310036dca151157f.js
view source profile
36
giz.de 4,162
js https://www.giz.de/themes/custom/dre…/pdf.min-DItEQD0X.js
view source profile
37
rapidapi.com 4,417
js https://rapidapi.com/hub/_next/stati…250-a4348a2e418b59bb.js
view source profile
38
campaignmonitor.com 5,003
html https://www.campaignmonitor.com/
view source profile
39
airmeet.com 5,005
js https://assets.airmeet.com/178945033…/25.c54e2379.chunk.js
view source profile
40
virginmedia.com 5,430
js https://www.virginmedia.com/myvmo2/426.d8b1928bb560a6de.js
view source profile
41
limewire.com 5,644
js https://limewire.com/build/chunks/dynamic/pdf-ZPdRQ4x7.js
view source profile
42
glovoapp.com 5,647
js https://glovoapp.com/_next/static/ch…815.a8397cc300901bcd.js
view source profile
43
vanguard.com 5,702
js https://ownyourfuture.vanguard.com/e…c9638492f4f677af4d0f.js
view source profile
44
filmdaily.co 5,767
html https://filmdaily.co/
view source profile
45
tenable.com 5,821
js https://www.tenable.com/evaluations/…/evaluations/index.js
view source profile
46
tate.org.uk 5,997
js https://www.tate.org.uk/static/js/Ta…067b5826af1674.chunk.js
view source profile
47
consensus.app 6,082
js https://consensus.app/_next/static/c…/44.f2224f3cecbc781c.js
view source profile
48
internxt.com 6,236
js https://internxt.com/_next/static/ch…612-9cb824cef202f7b8.js
view source profile
49
fhnw.ch 6,280
js https://www.fhnw.ch/static/js/PDFViewer.314315f8.chunk.js
view source profile
50
ceo.ca 6,523
js https://ceo.ca/_next/static/chunks/2…d2a-4015072647e1b7b1.js
view source profile
How it appears in the source
From semanticscholar.org (js):
ions.workerSrc = `//cdnjs.cloudflare.com/ajax/libs/pdf.js/${external_react_pdf_.pdfjs.version}/pdf.worker.min.js`;\n}\n\n;// CONCATENATED MODULE: ./src/utils/reader-utils.ts\nconst RENDER_TYPE = {\n
See every site: search for pdf.worker
Questions about finding PDF.js
How does PageSourceSearch know a website uses PDF.js?
By the source itself: The site's code points GlobalWorkerOptions.workerSrc at pdf.worker.js, or the page loads it. 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 PDF.js?
No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 36,835 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 PDF.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 pdf.worker with wp-content/plugins/ lists the WordPress sites that use PDF.js.