PageSourceSearch / Technologies / JavaScript libraries / formdata-polyfill JavaScript libraries
Websites using formdata-polyfill
formdata-polyfill completes the FormData API in older browsers.
About 14,924 websites in the PageSourceSearch index contain the code that reveals it; the 50 highest-ranked are listed below.
How is formdata-polyfill detected?
The page loads the polyfill by its package name, formdata-polyfill. The discovery keyword is the exact bytes PageSourceSearch looks for in every stored page and script:
formdata-polyfill 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 formdata-polyfill
Top 50 websites using formdata-polyfill
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 21:26:57 UTC.
# Website Rank Found in
1
pbs.org 559
js https://www.pbs.org/articles/cpresou…/formie.js?v=1786406248
view source profile
2
tally.so 2,178
js https://tally.so/_next/static/chunks…app-5a713e3f85fd5b59.js
view source profile
3
lse.ac.uk 2,278
js https://www.lse.ac.uk/_52BJ+w_728ae9…6f772137a05e791bc5f1.js
view source profile
4
core.ac.uk 2,658
js https://core.ac.uk/_next/static/chun…767611dc341f10edc57d.js
view source profile
5
cgtn.com 2,777
js https://ui.cgtn.com/ui/liveVideoTran…goraRTC_N-production.js
view source profile
6
randstad.com 3,782
js https://www.randstad.com/sites/defau…WrP5ydPIYD9ACpMjy-Rp4lx
view source profile
7
vodafone.co.uk 3,885
js https://stores.vodafone.co.uk/perman…/main.17857d6b.js
view source profile
8
nlc.org 4,160
js https://www.nlc.org/wp-content/theme…?ver=1790182034
view source profile
9
deutschlandfunk.de 4,779
js https://www.deutschlandfunk.de/stati…schlandfunk/polyfill.js
view source profile
10
airmeet.com 5,005
js https://assets.airmeet.com/178945033…/505.a6806099.chunk.js
view source profile
11
theoceancleanup.com 5,083
js https://theoceancleanup.com/app/them…/bundle-50e98ae3bb.js
view source profile
12
radiotimes.com 5,120
js https://www.radiotimes.com/_next/sta…app-37619cd162d2b7d4.js
view source profile
13
bechtle.com 5,749
js https://www.bechtle.com/.resources/b…6-15-36-16-000~cache.js
view source profile
14
insighttimer.com 5,953
js https://insighttimer.com/static/js/8526.d858ce0a.chunk.js
view source profile
15
xerox.com 6,890
js https://framework-assets.external.xe…/product-finder.min.js
view source profile
16
cgtrader.com 7,231
js https://assets.cgtrader.com/assets/a…8ae05aa1e386f522a5fe.js
view source profile
17
heifer.org 7,930
js https://myaccount.heifer.org/resourc…ed1e70fda6aaa3ef6a0d.js
view source profile
18
deutschlandfunkkultur.de 8,178
js https://www.deutschlandfunkkultur.de…funk_kultur/polyfill.js
view source profile
19
webstaurantstore.com 8,396
js https://www.webstaurantstore.com/bui…f6efad2839d51751d281.js
view source profile
20
blockclubchicago.org 9,178
js https://blockclubchicago.org/wp-cont…/js/button.js?ver=3.0.9
view source profile
21
exxonmobil.com 9,519
js https://corporate.exxonmobil.com/Ass…120.bundle-260915.18.js
view source profile
22
bbcgoodfood.com 10,410
js https://www.bbcgoodfood.com/_next/st…app-f45d15b695b22ca0.js
view source profile
23
3gpp.org 10,498
js https://www.3gpp.org/media/com_conve…ee0a198c258e6528098a6bc
view source profile
24
hkbu.edu.hk 11,222
js https://www.hkbu.edu.hk/etc.clientli…2f687622bb270-lc.min.js
view source profile
25
facs.org 12,493
js https://www.facs.org/assets/acs/js/1…88fb514684fbf0861db7.js
view source profile
26
self-compassion.org 13,440
js https://self-compassion.org/wp-conte…-js-button.js?ver=4.1.3
view source profile
27
radboudumc.nl 13,734
js https://www.radboudumc.nl/assets/js/main-NzgGw_aL.js
view source profile
28
freecycle.org 14,746
js https://freecycle.org/js/components.bundle.js
view source profile
29
skadden.com 14,781
js https://www.skadden.com/bundles/stan…T9dGhvJl1XXJYI2nXt3AdI1
view source profile
30
qu.edu 14,938
js https://grad.qu.edu/assets/js/main.b…?v=639258130695842627
view source profile
31
randstadusa.com 15,037
js https://www.randstadusa.com/sites/de…pRofLLhiw7k-vFK7_A4uOXw
view source profile
32
ultimate-guitar.com 15,522
js https://www.ultimate-guitar.com/stat…f68a1fe7635a83350541.js
view source profile
33
newsela.com 15,654
js https://static.newsela.com/video-player/embed.js
view source profile
34
bcbsm.com 16,538
js https://www.bcbsm.com/amslibs/etc.cl…807d82e631fca-lc.min.js
view source profile
35
nationwide.co.uk 17,666
js https://www.nationwide.co.uk/branche…/main.0b74dbd0.js
view source profile
36
vektor-inc.co.jp 17,678
js https://vws.vektor-inc.co.jp/wp-cont…-js-button.js?ver=4.1.3
view source profile
37
dm.de 18,157
js https://assets.dm.de/om/form/2026.52…ormuiInitializer.min.js
view source profile
38
ttc.ca 18,255
js https://cdn.ttc.ca/-/media/Themes/TT…4DEB42C68DE391D4E619BC6
view source profile
39
suffolk.gov.uk 18,521
js https://www.suffolk.gov.uk/_MhbRBA_9…ba5872205c810d16610.mjs
view source profile
40
waltonfamilyfoundation.org 20,099
js https://static.waltonfamilyfoundatio…f095ef228972d871d.gz.js
view source profile
41
uhs.nhs.uk 20,163
js https://www.uhs.nhs.uk/_Knmn7Q_8d6c0…01dfde656e2345d8a6cc.js
view source profile
42
scistarter.org 20,254
js https://static.scistarter.org/js/main.js
view source profile
43
historyextra.com 20,296
js https://www.historyextra.com/_next/s…app-f45d15b695b22ca0.js
view source profile
44
birmingham.gov.uk 20,533
js https://account.birmingham.gov.uk/q/…/index.js?v=1789459658
view source profile
45
mcw.edu 20,731
js https://www.mcw.edu/bundles/componen…LOyMIAx_sABgcq0PJnaiUw1
view source profile
46
irisreading.com 22,409
js https://irisreading.com/wp-content/p…ay-js-boot.js?ver=4.0.2
view source profile
47
jackkornfield.com 22,884
js http://jackkornfield.com/wp-content/…-js-button.js?ver=4.0.4
view source profile
48
fitonapp.com 23,370
js https://app.fitonapp.com/static/js/560.391c0386.chunk.js
view source profile
49
hs-bremen.de 23,957
js https://www.hs-bremen.de/_assets/f33…/bundle.js?1789984298
view source profile
50
pechakucha.com 24,682
js https://www.pechakucha.com/static/js/6133.74512bf3.chunk.js
view source profile
How it appears in the source
From pbs.org (js):
t().value,r=r.next().value,t.append(i,r)}return t},T.prototype._blob=function(){var t="----formdata-polyfill-"+Math.random(),e=[],i="--"+t+'\r\nContent-Disposition: form-data; name="';return this.forE
See every site: search for formdata-polyfill
Questions about finding formdata-polyfill
How does PageSourceSearch know a website uses formdata-polyfill?
By the source itself: The page loads the polyfill by its package name, formdata-polyfill. 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 formdata-polyfill?
No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 14,924 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 formdata-polyfill 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 formdata-polyfill with wp-content/plugins/ lists the WordPress sites that use formdata-polyfill.