Websites Powered by W3.CSS
26,807 websites tracked using W3.CSS (UI frameworks) · www.w3schools.com
W3.CSS is a UI/CSS framework used to style and lay out the site. Its official site is w3schools.com. PoweredBy tracks the websites that use W3.CSS across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the ui frameworks ecosystem.
Usage trend
5K
10K
15K
May 2023
Mar 2024
Jan 2025
Oct 2025
Aug 2026
Domains observed using W3.CSS in each month's HTTP Archive crawl,
May 2023 to Aug 2026 · peak 12,792 in Jun 2023. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.6 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 9,594 W3.CSS sites with Chrome UX data, p75 values, Aug 2026.
Top countries
India
2,209
United States
2,038
Indonesia
1,104
Thailand
1,000
Brazil
900
Germany
889
United Kingdom
878
France
814
Sites using W3.CSS by audience country, Chrome UX Report.
Top sites by authority
9+
4% · 15 of 372 sites
8+
2% · 125 of 7,677 sites
7+
<1% · 274 of 45,712 sites
6+
<1% · 391 of 110,136 sites
5+
<1% · 537 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running W3.CSS in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using W3.CSS
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | europa.eu | 9.57/10 | 42,200 | 31,835 | May 2023 |
| 2 | amazonaws.com | 9.50/10 | - | - | May 2023 |
| 3 | github.io | 9.43/10 | 1,800 | 1 | May 2023 |
| 4 | blogspot.com | 9.39/10 | - | - | May 2023 |
| 5 | weebly.com | 9.24/10 | 162,400 | 11,089 | May 2023 |
| 6 | mit.edu | 9.18/10 | 161,200 | 27,360 | May 2023 |
| 7 | oracle.com | 9.16/10 | 1,406,200 | 203,855 | May 2023 |
| 8 | nasa.gov | 9.15/10 | 2,715,500 | 372,280 | May 2023 |
| 9 | pages.dev | 9.14/10 | - | - | May 2023 |
| 10 | zendesk.com | 9.10/10 | 416,900 | 60,938 | May 2023 |
| 11 | canada.ca | 9.08/10 | 2,129,800 | 995,010 | May 2023 |
| 12 | noaa.gov | 9.07/10 | 1,258,800 | 144,262 | May 2023 |
| 13 | free.fr | 9.05/10 | 3,400 | 1,262 | May 2023 |
| 14 | b-cdn.net | 9.02/10 | - | - | Aug 2025 |
| 15 | netlify.app | 9.01/10 | 2 | 2 | May 2023 |
| 16 | texas.gov | 8.98/10 | 856,400 | 43,777 | Mar 2026 |
| 17 | cmu.edu | 8.97/10 | 436,800 | 81,774 | May 2024 |
| 18 | umn.edu | 8.96/10 | 78 | 49 | May 2023 |
| 19 | ethz.ch | 8.95/10 | 12,900 | 11,869 | Mar 2026 |
| 20 | sakura.ne.jp | 8.95/10 | - | - | May 2023 |
| 21 | w3schools.com | 8.91/10 | 4,173,900 | 935,770 | Aug 2026 |
| 22 | jimdofree.com | 8.88/10 | - | - | May 2023 |
| 23 | azurewebsites.net | 8.87/10 | - | - | Jul 2023 |
| 24 | appspot.com | 8.87/10 | - | - | May 2023 |
| 25 | dw.com | 8.83/10 | 482,700 | 286,700 | May 2023 |
| 26 | illinois.edu | 8.83/10 | 47,000 | 4,065 | Jun 2024 |
| 27 | it.com | 8.81/10 | - | - | Dec 2025 |
| 28 | utoronto.ca | 8.81/10 | 42,800 | 10,094 | May 2023 |
| 29 | mn.gov | 8.78/10 | 964,200 | 281,325 | Jun 2024 |
| 30 | msu.edu | 8.78/10 | 149,500 | 2,641 | May 2023 |
| 31 | gouv.qc.ca | 8.77/10 | - | - | May 2023 |
| 32 | web.app | 8.76/10 | - | - | May 2023 |
| 33 | uci.edu | 8.76/10 | 94,700 | 9,859 | Jun 2023 |
| 34 | cern.ch | 8.76/10 | 950 | 261 | May 2023 |
| 35 | army.mil | 8.75/10 | 1,049,000 | 286,727 | May 2023 |
| 36 | rutgers.edu | 8.75/10 | 147,400 | 31,478 | May 2023 |
| 37 | herokuapp.com | 8.74/10 | - | - | May 2023 |
| 38 | ucl.ac.uk | 8.74/10 | 154,800 | 93,062 | May 2023 |
| 39 | telekom.de | 8.73/10 | 3,400 | 4,133 | May 2023 |
| 40 | uwaterloo.ca | 8.71/10 | 224,700 | 71,840 | Jun 2023 |
| 41 | ucsb.edu | 8.71/10 | 73,800 | 11,445 | Jul 2023 |
| 42 | hku.hk | 8.70/10 | 6,000 | 1,100 | May 2023 |
| 43 | gatech.edu | 8.68/10 | 72,600 | 12,653 | May 2023 |
| 44 | navy.mil | 8.68/10 | 320,800 | 44,371 | May 2023 |
| 45 | delaware.gov | 8.67/10 | 128,800 | 12,757 | May 2023 |
| 46 | dc.gov | 8.67/10 | 99,300 | 10,787 | May 2023 |
| 47 | altervista.org | 8.66/10 | - | - | May 2023 |
| 48 | mlb.com | 8.65/10 | 39,419,600 | 2,565,494 | Mar 2024 |
| 49 | nus.edu.sg | 8.62/10 | 20,200 | 3,936 | May 2023 |
| 50 | ub.edu | 8.62/10 | 11,300 | 24,177 | Jul 2023 |
| 51 | colostate.edu | 8.62/10 | 189,200 | 11,352 | Jun 2024 |
| 52 | workers.dev | 8.61/10 | - | - | Oct 2024 |
| 53 | ups.com | 8.60/10 | 10,858,100 | 384,052 | Oct 2024 |
| 54 | ucm.es | 8.60/10 | 15,000 | 16,497 | Jun 2026 |
| 55 | developpement-durable.gouv.fr | 8.60/10 | - | - | Apr 2024 |
| 56 | rug.nl | 8.60/10 | 11,600 | 9,018 | Mar 2026 |
| 57 | unece.org | 8.59/10 | 56,000 | 23,579 | May 2023 |
| 58 | krakow.pl | 8.59/10 | 690 | 649 | May 2023 |
| 59 | salesforce-sites.com | 8.58/10 | - | - | May 2023 |
| 60 | state.tx.us | 8.58/10 | - | - | Mar 2026 |
| 61 | tvp.pl | 8.58/10 | 1,500 | 1,073 | Jul 2024 |
| 62 | fu-berlin.de | 8.58/10 | 11,500 | 7,748 | Apr 2025 |
| 63 | nd.gov | 8.58/10 | 111,300 | 16,742 | May 2023 |
| 64 | unam.mx | 8.58/10 | 1,900 | 1,196 | May 2023 |
| 65 | neocities.org | 8.57/10 | 23,000 | 6,887 | May 2023 |
| 66 | cnr.it | 8.57/10 | 810 | 1,174 | May 2023 |
| 67 | wisconsin.gov | 8.57/10 | 127,800 | 2,079 | Aug 2025 |
| 68 | ucsc.edu | 8.56/10 | 72,800 | 11,866 | May 2023 |
| 69 | gmu.edu | 8.56/10 | 143,500 | 30,472 | May 2023 |
| 70 | udel.edu | 8.55/10 | 126,300 | 47,905 | Sep 2023 |
| 71 | spb.ru | 8.53/10 | - | - | May 2023 |
| 72 | tu-dresden.de | 8.49/10 | 2,300 | 3,199 | May 2023 |
| 73 | sapo.pt | 8.49/10 | 10,100 | 29,601 | Dec 2025 |
| 74 | pressreader.com | 8.48/10 | 63,400 | 122,960 | May 2023 |
| 75 | polimi.it | 8.38/10 | 5,800 | 4,283 | Jun 2026 |
| 76 | uni-freiburg.de | 8.37/10 | 4,000 | 1,793 | May 2023 |
| 77 | dyndns.org | 8.36/10 | - | - | May 2023 |
| 78 | wroc.pl | 8.36/10 | - | - | May 2023 |
| 79 | unimi.it | 8.35/10 | 3,300 | 3,182 | May 2023 |
| 80 | ruhr-uni-bochum.de | 8.34/10 | 5,500 | 3,577 | Jun 2026 |
| 81 | unicamp.br | 8.34/10 | 860 | 1,061 | Sep 2024 |
| 82 | tistory.com | 8.33/10 | 230 | 8 | May 2023 |
| 83 | istat.it | 8.33/10 | 2,000 | 1,933 | May 2023 |
| 84 | state.or.us | 8.32/10 | - | - | May 2023 |
| 85 | ifrs.org | 8.32/10 | 42,300 | 12,504 | May 2023 |
| 86 | huji.ac.il | 8.32/10 | - | 10 | May 2023 |
| 87 | cafe24.com | 8.31/10 | 6 | 6 | May 2023 |
| 88 | libguides.com | 8.31/10 | - | - | May 2023 |
| 89 | thueringen.de | 8.30/10 | 82 | 184 | May 2023 |
| 90 | cuhk.edu.hk | 8.29/10 | 5,100 | 1,878 | May 2023 |
| 91 | firebaseapp.com | 8.27/10 | - | - | May 2023 |
| 92 | ua.es | 8.27/10 | 130 | 216 | Jul 2025 |
| 93 | yolasite.com | 8.26/10 | - | - | Nov 2025 |
| 94 | lansstyrelsen.se | 8.25/10 | 1,800 | 885 | Dec 2023 |
| 95 | ufrj.br | 8.25/10 | 320 | 114 | May 2023 |
| 96 | ntu.edu.tw | 8.24/10 | 1,500 | 817 | May 2023 |
| 97 | uj.edu.pl | 8.24/10 | 360 | 132 | May 2023 |
| 98 | camh.ca | 8.22/10 | 111,300 | 28,720 | Dec 2023 |
| 99 | madrid.es | 8.22/10 | 5,200 | 11,494 | Aug 2023 |
| 100 | usal.es | 8.22/10 | 3,200 | 1,130 | May 2023 |
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) →
Compare W3.CSS
- W3.CSS vs Bootstrap
- W3.CSS vs Animate.css
- W3.CSS vs Tailwind CSS
- W3.CSS vs ZURB Foundation
- W3.CSS vs Radix UI