Websites Powered by Karte
922 websites tracked using Karte (A/B Testing) · karte.io
Karte is a tool for running A/B and multivariate experiments to compare page variants. Its official site is karte.io. PoweredBy tracks the websites that use Karte across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the a/b testing ecosystem.
Usage trend
200
400
600
800
Oct 2023
Jun 2024
Feb 2025
Oct 2025
Jun 2026
Domains observed using Karte in each month's HTTP Archive crawl,
Oct 2023 to Jun 2026 · peak 725 in Nov 2023. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.7 s
INP 100 ms
CLS 0
TTFB 600 ms
Median site among 791 Karte sites with Chrome UX data, p75 values, Jun 2026.
Top countries
Japan
869
United States
208
Taiwan
181
South Korea
166
Hong Kong SAR China
132
Thailand
129
India
117
Indonesia
115
Sites using Karte by audience country, Chrome UX Report.
Top sites by authority
9+
<1% · 2 of 372 sites
8+
<1% · 36 of 7,677 sites
7+
<1% · 106 of 45,712 sites
6+
<1% · 183 of 110,136 sites
5+
<1% · 259 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Karte in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Karte
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | rakuten.co.jp | 9.11/10 | 9,200 | 1,689 | Oct 2023 |
| 2 | zendesk.com | 9.10/10 | 416,900 | 60,938 | Oct 2023 |
| 3 | mynavi.jp | 8.95/10 | 81 | 14 | Oct 2023 |
| 4 | sakura.ne.jp | 8.95/10 | - | - | May 2026 |
| 5 | japanpost.jp | 8.85/10 | 55 | 78 | Oct 2023 |
| 6 | docomo.ne.jp | 8.71/10 | 4,100 | 2,896 | Oct 2023 |
| 7 | biglobe.ne.jp | 8.71/10 | 1 | 2 | Oct 2023 |
| 8 | nikkeibp.co.jp | 8.68/10 | 32 | 38 | Apr 2026 |
| 9 | tabelog.com | 8.54/10 | 14,500 | 32,966 | Jun 2024 |
| 10 | peraichi.com | 8.53/10 | 6 | 24 | Mar 2026 |
| 11 | official.ec | 8.51/10 | - | - | Jul 2025 |
| 12 | nikkei.co.jp | 8.50/10 | 490 | 255 | Feb 2026 |
| 13 | hatenablog.com | 8.47/10 | - | - | Dec 2024 |
| 14 | mufg.jp | 8.46/10 | 920 | 453 | Oct 2023 |
| 15 | form.run | 8.40/10 | 60 | 32 | Jul 2025 |
| 16 | zozo.jp | 8.36/10 | 5,900 | 3,668 | Oct 2023 |
| 17 | mistore.jp | 8.34/10 | 870 | 1,080 | Oct 2023 |
| 18 | excite.co.jp | 8.34/10 | 1,200 | 3,025 | Oct 2023 |
| 19 | suntory.co.jp | 8.31/10 | 350 | 279 | Oct 2023 |
| 20 | dmm.com | 8.28/10 | 130 | 101 | Oct 2024 |
| 21 | nikkan.co.jp | 8.27/10 | 40 | 363 | Jul 2024 |
| 22 | sony.jp | 8.27/10 | 1,000 | 2,568 | Jan 2024 |
| 23 | ismedia.jp | 8.22/10 | - | - | Oct 2023 |
| 24 | tepco.co.jp | 8.20/10 | 4,000 | 923 | Mar 2024 |
| 25 | osakagas.co.jp | 8.19/10 | 130 | 58 | Oct 2024 |
| 26 | jtb.co.jp | 8.18/10 | 640 | 1,303 | Oct 2023 |
| 27 | jcb.co.jp | 8.17/10 | 78 | 190 | Oct 2023 |
| 28 | au.com | 8.15/10 | 3,100 | 1,693 | Mar 2024 |
| 29 | lixil.co.jp | 8.12/10 | 39 | 119 | Oct 2025 |
| 30 | homes.co.jp | 8.06/10 | 160 | 316 | Oct 2023 |
| 31 | tokiomarine-nichido.co.jp | 8.06/10 | 400 | 115 | Jan 2024 |
| 32 | hatenablog.jp | 8.06/10 | - | - | May 2026 |
| 33 | sompo-japan.co.jp | 8.04/10 | 220 | 101 | Jan 2026 |
| 34 | smbc.co.jp | 8.03/10 | 3,400 | 947 | Oct 2023 |
| 35 | westjr.co.jp | 8.02/10 | 27,300 | 14,339 | Apr 2026 |
| 36 | doda.jp | 8.00/10 | 920 | 178 | Feb 2024 |
| 37 | wowow.co.jp | 7.99/10 | 78 | 224 | Sep 2024 |
| 38 | en-gage.net | 7.98/10 | 42 | 99 | Sep 2024 |
| 39 | ntt-west.co.jp | 7.98/10 | 59 | 89 | Jul 2025 |
| 40 | benesse.ne.jp | 7.97/10 | - | - | Oct 2023 |
| 41 | nhk-cs.jp | 7.94/10 | 260 | 40 | Oct 2023 |
| 42 | resv.jp | 7.86/10 | - | - | Oct 2023 |
| 43 | uqwimax.jp | 7.83/10 | 550 | 421 | Jul 2024 |
| 44 | forbesjapan.com | 7.82/10 | 230 | 456 | Jun 2026 |
| 45 | asics.com | 7.79/10 | 715,500 | 160,803 | Oct 2023 |
| 46 | supership.jp | 7.78/10 | - | 1 | Sep 2025 |
| 47 | kakaku.com | 7.78/10 | 4,000 | 29,356 | Jan 2025 |
| 48 | hpplus.jp | 7.78/10 | - | - | Oct 2023 |
| 49 | ntt.com | 7.73/10 | 980 | 399 | Jan 2024 |
| 50 | tokyu.co.jp | 7.67/10 | 130 | 169 | Mar 2026 |
| 51 | karte.io | 7.65/10 | 3 | 3 | Oct 2023 |
| 52 | benesse.co.jp | 7.63/10 | 79 | 23 | Oct 2023 |
| 53 | sekisuihouse.co.jp | 7.63/10 | 440 | 130 | May 2026 |
| 54 | sbisec.co.jp | 7.62/10 | 870 | 203 | Oct 2023 |
| 55 | smktg.jp | 7.61/10 | - | - | Apr 2025 |
| 56 | rakuten-sec.co.jp | 7.57/10 | 1,100 | 246 | Nov 2024 |
| 57 | ms-ins.com | 7.52/10 | 810 | 161 | Oct 2023 |
| 58 | mec.co.jp | 7.47/10 | 240 | 75 | Oct 2023 |
| 59 | sansan.com | 7.46/10 | 920 | 7 | Nov 2023 |
| 60 | himawari-life.co.jp | 7.46/10 | 7 | 10 | Oct 2023 |
| 61 | golfdigest.co.jp | 7.46/10 | 10 | 43 | Oct 2023 |
| 62 | mazda.co.jp | 7.46/10 | 69 | 268 | Mar 2026 |
| 63 | d-kintetsu.co.jp | 7.45/10 | 8 | 33 | Oct 2023 |
| 64 | airregi.jp | 7.44/10 | 15 | 27 | Oct 2023 |
| 65 | tmn-anshin.co.jp | 7.44/10 | 2 | 7 | Oct 2023 |
| 66 | rohto.co.jp | 7.44/10 | 140 | 33 | Jan 2025 |
| 67 | gakujo.ne.jp | 7.44/10 | - | 2 | Aug 2024 |
| 68 | carsensor.net | 7.43/10 | 9,900 | 6,317 | Jul 2024 |
| 69 | kubota.co.jp | 7.42/10 | 26 | 39 | Aug 2025 |
| 70 | resonabank.co.jp | 7.42/10 | 35 | 54 | Oct 2023 |
| 71 | omsystem.com | 7.41/10 | 1,400 | 12 | May 2024 |
| 72 | en-japan.com | 7.40/10 | - | - | Oct 2023 |
| 73 | softbankhawks.co.jp | 7.39/10 | 270 | 235 | Oct 2023 |
| 74 | subaru.jp | 7.38/10 | 670 | 316 | May 2026 |
| 75 | pola.co.jp | 7.36/10 | - | 27 | Oct 2023 |
| 76 | timee.co.jp | 7.35/10 | 18 | 10 | Sep 2024 |
| 77 | teachme.jp | 7.34/10 | - | 2 | Oct 2023 |
| 78 | drmartens.com | 7.33/10 | 527,400 | 138,695 | Oct 2023 |
| 79 | sanspo.com | 7.33/10 | 260 | 305 | Oct 2023 |
| 80 | netprotections.com | 7.31/10 | - | - | Oct 2023 |
| 81 | onecareer.jp | 7.30/10 | 1 | 26 | Dec 2025 |
| 82 | baycrews.jp | 7.26/10 | 420 | 877 | Oct 2023 |
| 83 | kaonavi.jp | 7.22/10 | 2 | 17 | Oct 2023 |
| 84 | onward.co.jp | 7.17/10 | 4 | 29 | Apr 2024 |
| 85 | jibunbank.co.jp | 7.17/10 | 4 | 22 | Oct 2023 |
| 86 | dinos.co.jp | 7.08/10 | 280 | 15 | Apr 2025 |
| 87 | teikyo-u.ac.jp | 7.08/10 | 120 | 128 | Oct 2023 |
| 88 | rurubu.jp | 7.07/10 | 26 | 243 | Nov 2023 |
| 89 | mineo.jp | 7.07/10 | 65 | 66 | Oct 2023 |
| 90 | kidzania.jp | 7.07/10 | 160 | 131 | Oct 2023 |
| 91 | cloudcircus.jp | 7.06/10 | - | - | Oct 2024 |
| 92 | rentio.jp | 7.06/10 | 24 | 88 | May 2025 |
| 93 | takarakuji-official.jp | 7.03/10 | 810 | 127 | Feb 2024 |
| 94 | gmo-pg.com | 7.02/10 | 190 | 89 | May 2024 |
| 95 | entetsu.co.jp | 7.02/10 | 2 | 6 | Jul 2024 |
| 96 | tohogas.co.jp | 7.02/10 | 23 | 37 | Oct 2023 |
| 97 | povo.jp | 7.02/10 | 120 | 300 | Jul 2025 |
| 98 | urban-research.jp | 7.02/10 | 110 | 154 | Oct 2023 |
| 99 | alphapolis.co.jp | 7.02/10 | 210 | 157 | May 2025 |
| 100 | sumitomo-rd.co.jp | 7.02/10 | 74 | 33 | Oct 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) →
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