Websites Powered by ClientJS
8,313 websites tracked using ClientJS (JavaScript libraries) · clientjs.org
ClientJS is a JavaScript library used to add functionality to web pages. Its official site is clientjs.org. PoweredBy tracks the websites that use ClientJS across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the javascript libraries ecosystem.
Usage trend
1K
2K
3K
4K
Jul 2021
Nov 2022
Mar 2024
Jun 2025
Oct 2026
Domains observed using ClientJS in each month's HTTP Archive crawl,
Jul 2021 to Oct 2026 · peak 3,370 in Sep 2022. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.9 s
INP 100 ms
CLS 0
TTFB 700 ms
Median site among 2,951 ClientJS sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
979
Germany
690
Brazil
669
India
649
United Kingdom
628
France
567
Italy
565
Canada
498
Sites using ClientJS by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| News and media | 0.10% | 51 |
| Government | 0.07% | 7 |
| Finance and insurance | 0.07% | 15 |
| Education | 0.04% | 25 |
| Pets and animals | 0.03% | 1 |
| Arts and entertainment | 0.02% | 10 |
| Blogs and publishing | 0.02% | 5 |
| Software and apps | 0.02% | 26 |
| Healthcare | 0.01% | 16 |
| Non-profit and religious | <0.01% | 1 |
| Retail | <0.01% | 35 |
| Professional services | <0.01% | 5 |
Share of each industry's websites with a detected stack that use ClientJS; industries come from what sites declare in their own structured data.
Top sites by authority
9+
1% · 4 of 372 sites
8+
<1% · 54 of 7,677 sites
7+
<1% · 169 of 45,712 sites
6+
<1% · 247 of 110,136 sites
5+
<1% · 350 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running ClientJS in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using ClientJS
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 201 | civis.bz.it | 6.52/10 | 60 | 94 | Sep 2021 |
| 202 | landshut.de | 6.52/10 | 26 | 48 | Dec 2022 |
| 203 | urk.edu.pl | 6.52/10 | 23 | 50 | Feb 2026 |
| 204 | umw.edu.pl | 6.50/10 | 370 | 576 | Jun 2026 |
| 205 | cheers.com.tw | 6.49/10 | 37 | 136 | Apr 2024 |
| 206 | librarypass.com | 6.48/10 | 280 | 70 | Oct 2022 |
| 207 | cba.am | 6.47/10 | 100 | 138 | Dec 2023 |
| 208 | agrocampus-ouest.fr | 6.47/10 | - | - | Oct 2026 |
| 209 | tving.com | 6.46/10 | 1,200 | 156 | Feb 2022 |
| 210 | blogsicilia.it | 6.46/10 | 100 | 410 | Oct 2021 |
| 211 | topcashback.co.uk | 6.45/10 | 6,400 | 9,944 | Jul 2021 |
| 212 | saude.df.gov.br | 6.43/10 | 350 | 1,157 | Apr 2026 |
| 213 | imtbs-tsp.eu | 6.42/10 | - | - | Jul 2026 |
| 214 | bordeaux-inp.fr | 6.42/10 | 9 | 9 | Dec 2025 |
| 215 | insa-rouen.fr | 6.42/10 | 46 | 71 | Jan 2026 |
| 216 | surli.cc | 6.39/10 | 30 | 14 | Jun 2025 |
| 217 | assas-universite.fr | 6.38/10 | 550 | 709 | Oct 2025 |
| 218 | surl.lu | 6.38/10 | - | 3 | Jun 2025 |
| 219 | fnacdarty.com | 6.37/10 | 940 | 106 | Mar 2026 |
| 220 | bu.ac.th | 6.36/10 | 1,400 | 218 | Aug 2024 |
| 221 | gov.krd | 6.34/10 | 3,500 | 623 | Aug 2022 |
| 222 | ensicaen.fr | 6.33/10 | 81 | 76 | Apr 2026 |
| 223 | wvv.de | 6.32/10 | 12 | 90 | Jul 2021 |
| 224 | biblioclub.ru | 6.30/10 | - | 1 | Oct 2023 |
| 225 | unicreditbank.cz | 6.30/10 | 110 | 154 | Dec 2021 |
| 226 | compass.education | 6.27/10 | 15,000 | 2,589 | Jan 2022 |
| 227 | telecable.es | 6.27/10 | 110 | 169 | Feb 2025 |
| 228 | mypopups.com | 6.26/10 | 12 | 14 | Jul 2023 |
| 229 | topcashback.com | 6.26/10 | 60,500 | 21,449 | Jul 2021 |
| 230 | ecole-paysage.fr | 6.26/10 | 25 | 18 | Jan 2026 |
| 231 | unimes.fr | 6.26/10 | 42 | 75 | Dec 2024 |
| 232 | tanzania.go.tz | 6.25/10 | 24 | 63 | Aug 2022 |
| 233 | hacc.edu | 6.23/10 | 46,900 | 17,250 | Oct 2025 |
| 234 | ondarock.it | 6.21/10 | 3,700 | 5,073 | Aug 2022 |
| 235 | dipta.cat | 6.20/10 | 3 | 52 | Feb 2026 |
| 236 | cronachemaceratesi.it | 6.20/10 | 150 | 427 | Aug 2022 |
| 237 | jiomart.com | 6.13/10 | 11,600 | 37,455 | Jun 2026 |
| 238 | riachuelo.com.br | 6.12/10 | 2,400 | 2,908 | Sep 2024 |
| 239 | pschyrembel.de | 6.11/10 | 990 | 948 | Jul 2021 |
| 240 | parlons-velo.fr | 6.11/10 | - | 2 | Jul 2021 |
| 241 | amazone.de | 6.10/10 | 1 | 16 | Aug 2026 |
| 242 | ignatianum.edu.pl | 6.09/10 | 23 | 43 | Oct 2025 |
| 243 | um.edu.uy | 6.08/10 | 220 | 288 | Mar 2026 |
| 244 | ip2location.io | 6.07/10 | 5,900 | 444 | Sep 2026 |
| 245 | imasia-passport.com | 6.02/10 | - | - | Jan 2025 |
| 246 | makro.co.za | 6.00/10 | 2,100 | 7,408 | Nov 2024 |
| 247 | cmoney.tw | 6.00/10 | 1,000 | 2,109 | Dec 2025 |
| 248 | nelincs.gov.uk | 5.99/10 | 2,800 | 2,096 | Sep 2022 |
| 249 | surl.lt | 5.99/10 | - | 2 | Jun 2025 |
| 250 | ensea.fr | 5.99/10 | 65 | 65 | Jan 2026 |
| 251 | izs.it | 5.97/10 | 130 | 133 | May 2026 |
| 252 | dask.gov.tr | 5.95/10 | 120 | 83 | Dec 2025 |
| 253 | comune.catania.it | 5.94/10 | 240 | 200 | Aug 2022 |
| 254 | insa-strasbourg.fr | 5.92/10 | 260 | 69 | Jun 2026 |
| 255 | fgc.org.br | 5.88/10 | 12 | 36 | Apr 2026 |
| 256 | sbm.org.tr | 5.86/10 | 390 | 157 | Oct 2025 |
| 257 | ankerkraut.de | 5.86/10 | 71 | 258 | May 2026 |
| 258 | radiokoeln.de | 5.86/10 | 120 | 409 | Jul 2021 |
| 259 | sigepe.gov.br | 5.84/10 | - | 3 | May 2023 |
| 260 | kalendes.com | 5.83/10 | 2 | 53 | Jul 2021 |
| 261 | mcot.net | 5.83/10 | 24 | 6 | Nov 2024 |
| 262 | ensma.fr | 5.83/10 | 58 | 126 | Dec 2025 |
| 263 | cca.gov.in | 5.82/10 | 910 | 963 | Jun 2024 |
| 264 | cpe.fr | 5.82/10 | 120 | 88 | Sep 2026 |
| 265 | institut-agro-rennes-angers.fr | 5.81/10 | 45 | 46 | Oct 2026 |
| 266 | ujd.edu.pl | 5.80/10 | 20 | 38 | Apr 2026 |
| 267 | edh.tw | 5.79/10 | 15 | 160 | Dec 2021 |
| 268 | prosegur.com | 5.76/10 | 2,000 | 547 | Jul 2021 |
| 269 | cib.hu | 5.76/10 | 500 | 237 | Jul 2021 |
| 270 | ynov.com | 5.73/10 | 110 | 146 | Aug 2025 |
| 271 | fitp.it | 5.73/10 | 340 | 769 | Mar 2023 |
| 272 | trintech.com | 5.72/10 | 11,000 | 2,404 | Nov 2023 |
| 273 | radiowuppertal.de | 5.69/10 | 360 | 409 | Jul 2021 |
| 274 | mof.go.tz | 5.68/10 | 130 | 155 | May 2022 |
| 275 | umg.edu.pl | 5.68/10 | 85 | 81 | Dec 2025 |
| 276 | sirsidynix.net | 5.67/10 | - | 1 | Apr 2025 |
| 277 | navvis.com | 5.67/10 | 910 | 497 | Sep 2022 |
| 278 | kbiz.or.kr | 5.65/10 | 17 | 9 | Jul 2021 |
| 279 | semparar.com.br | 5.63/10 | 180 | 459 | Aug 2022 |
| 280 | meridionews.it | 5.62/10 | 30 | 149 | Aug 2022 |
| 281 | devon-cornwall.police.uk | 5.61/10 | 1,300 | 1,983 | Oct 2026 |
| 282 | seybold.de | 5.60/10 | 12 | 37 | Sep 2026 |
| 283 | dcs.vn | 5.60/10 | 32 | 18 | Sep 2021 |
| 284 | verallia.com | 5.56/10 | 35 | 67 | Apr 2022 |
| 285 | firat.edu.tr | 5.55/10 | 90 | 82 | Oct 2026 |
| 286 | outsystemsenterprise.com | 5.54/10 | - | - | Aug 2022 |
| 287 | gov.go.tz | 5.54/10 | - | - | Oct 2026 |
| 288 | winterhalter.com | 5.53/10 | 1,600 | 516 | Nov 2025 |
| 289 | tzembassy.go.tz | 5.51/10 | 170 | 44 | Apr 2025 |
| 290 | viking.de | 5.51/10 | 24 | 127 | Sep 2025 |
| 291 | mundo-r.com | 5.50/10 | 81 | 335 | Mar 2024 |
| 292 | hunet.co.kr | 5.49/10 | 5 | 26 | Jul 2021 |
| 293 | ega.go.tz | 5.49/10 | 36 | 54 | May 2025 |
| 294 | theonlinecitizen.com | 5.49/10 | 310 | 1,086 | Jun 2023 |
| 295 | pxmart.com.tw | 5.47/10 | 11 | 40 | Jun 2023 |
| 296 | ksei.co.id | 5.47/10 | 21 | 7 | Jul 2021 |
| 297 | uness.fr | 5.47/10 | 9 | 58 | Jul 2026 |
| 298 | institut-agro.fr | 5.45/10 | 14 | 6 | Oct 2026 |
| 299 | niu.edu.tw | 5.44/10 | 200 | 12 | Aug 2022 |
| 300 | euskaltel.com | 5.43/10 | 32 | 324 | Aug 2022 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).
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