Websites Powered by Karte
967 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
Jul 2024
Apr 2025
Jan 2026
Oct 2026
Domains observed using Karte in each month's HTTP Archive crawl,
Oct 2023 to Oct 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 798 Karte sites with Chrome UX data, p75 values, Sep 2026.
Top countries
Japan
796
United States
188
Taiwan
158
South Korea
151
Hong Kong SAR China
121
Thailand
120
Indonesia
112
Singapore
106
Sites using Karte by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Blogs and publishing | 0.01% | 3 |
| Software and apps | <0.01% | 16 |
| Non-profit and religious | <0.01% | 1 |
| Home and construction | <0.01% | 5 |
| Beauty and wellness | <0.01% | 2 |
| Sports and fitness | <0.01% | 1 |
| Retail | <0.01% | 16 |
| Professional services | <0.01% | 2 |
| Travel and hospitality | <0.01% | 3 |
| Real estate | <0.01% | 2 |
| Healthcare | <0.01% | 3 |
| Education | <0.01% | 1 |
Share of each industry's websites with a detected stack that use Karte; industries come from what sites declare in their own structured data.
Top sites by authority
9+
<1% · 2 of 372 sites
8+
<1% · 29 of 7,677 sites
7+
<1% · 99 of 45,712 sites
6+
<1% · 175 of 110,136 sites
5+
<1% · 256 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 | site.com | 8.86/10 | - | 1 | Sep 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 | official.ec | 8.51/10 | - | - | Jul 2025 |
| 11 | nikkei.co.jp | 8.50/10 | 490 | 255 | Feb 2026 |
| 12 | hatenablog.com | 8.47/10 | - | - | Dec 2024 |
| 13 | mufg.jp | 8.46/10 | 920 | 453 | Oct 2023 |
| 14 | zozo.jp | 8.36/10 | 5,900 | 3,668 | Oct 2023 |
| 15 | mistore.jp | 8.34/10 | 870 | 1,080 | Oct 2023 |
| 16 | suntory.co.jp | 8.31/10 | 350 | 279 | Oct 2023 |
| 17 | dmm.com | 8.28/10 | 130 | 101 | Oct 2024 |
| 18 | ismedia.jp | 8.22/10 | - | - | Oct 2023 |
| 19 | tepco.co.jp | 8.20/10 | 4,000 | 923 | Mar 2024 |
| 20 | osakagas.co.jp | 8.19/10 | 130 | 58 | Oct 2024 |
| 21 | jtb.co.jp | 8.18/10 | 640 | 1,303 | Oct 2023 |
| 22 | jcb.co.jp | 8.17/10 | 78 | 190 | Oct 2023 |
| 23 | au.com | 8.15/10 | 3,100 | 1,693 | Mar 2024 |
| 24 | lixil.co.jp | 8.12/10 | 39 | 119 | Oct 2025 |
| 25 | tokiomarine-nichido.co.jp | 8.06/10 | 400 | 115 | Jan 2024 |
| 26 | hatenablog.jp | 8.06/10 | - | - | May 2026 |
| 27 | sompo-japan.co.jp | 8.04/10 | 220 | 101 | Jan 2026 |
| 28 | smbc.co.jp | 8.03/10 | 3,400 | 947 | Oct 2023 |
| 29 | doda.jp | 8.00/10 | 920 | 178 | Feb 2024 |
| 30 | wowow.co.jp | 7.99/10 | 78 | 224 | Sep 2024 |
| 31 | en-gage.net | 7.98/10 | 42 | 99 | Sep 2024 |
| 32 | ntt-west.co.jp | 7.98/10 | 59 | 89 | Jul 2025 |
| 33 | nhk-cs.jp | 7.94/10 | 260 | 40 | Oct 2023 |
| 34 | resv.jp | 7.86/10 | - | - | Oct 2023 |
| 35 | uqwimax.jp | 7.83/10 | 550 | 421 | Jul 2024 |
| 36 | ajinomoto.co.jp | 7.83/10 | 50 | 123 | Jun 2024 |
| 37 | forbesjapan.com | 7.82/10 | 230 | 456 | Jun 2026 |
| 38 | moneyforward.com | 7.79/10 | 52 | 13 | Oct 2023 |
| 39 | asics.com | 7.79/10 | 715,500 | 160,803 | Oct 2023 |
| 40 | supership.jp | 7.78/10 | - | 1 | Sep 2025 |
| 41 | kakaku.com | 7.78/10 | 4,000 | 29,356 | Jan 2025 |
| 42 | hpplus.jp | 7.78/10 | - | - | Oct 2023 |
| 43 | ntt.com | 7.73/10 | 980 | 399 | Jan 2024 |
| 44 | eposcard.co.jp | 7.67/10 | 20 | 73 | Jul 2026 |
| 45 | tokyu.co.jp | 7.67/10 | 130 | 169 | Mar 2026 |
| 46 | karte.io | 7.65/10 | 3 | 3 | Oct 2023 |
| 47 | benesse.co.jp | 7.63/10 | 79 | 23 | Oct 2023 |
| 48 | sekisuihouse.co.jp | 7.63/10 | 440 | 130 | May 2026 |
| 49 | sbisec.co.jp | 7.62/10 | 870 | 203 | Oct 2023 |
| 50 | smktg.jp | 7.61/10 | - | - | Apr 2025 |
| 51 | rakuten-sec.co.jp | 7.57/10 | 1,100 | 246 | Nov 2024 |
| 52 | ms-ins.com | 7.52/10 | 810 | 161 | Oct 2023 |
| 53 | mec.co.jp | 7.47/10 | 240 | 75 | Oct 2023 |
| 54 | sansan.com | 7.46/10 | 920 | 7 | Nov 2023 |
| 55 | himawari-life.co.jp | 7.46/10 | 7 | 10 | Oct 2023 |
| 56 | golfdigest.co.jp | 7.46/10 | 10 | 43 | Oct 2023 |
| 57 | mazda.co.jp | 7.46/10 | 69 | 268 | Mar 2026 |
| 58 | d-kintetsu.co.jp | 7.45/10 | 8 | 33 | Oct 2023 |
| 59 | airregi.jp | 7.44/10 | 15 | 27 | Oct 2023 |
| 60 | tmn-anshin.co.jp | 7.44/10 | 2 | 7 | Oct 2023 |
| 61 | rohto.co.jp | 7.44/10 | 140 | 33 | Jan 2025 |
| 62 | gakujo.ne.jp | 7.44/10 | - | 2 | Aug 2024 |
| 63 | carsensor.net | 7.43/10 | 9,900 | 6,317 | Jul 2024 |
| 64 | kubota.co.jp | 7.42/10 | 26 | 39 | Aug 2025 |
| 65 | resonabank.co.jp | 7.42/10 | 35 | 54 | Oct 2023 |
| 66 | omsystem.com | 7.41/10 | 1,400 | 21 | May 2024 |
| 67 | en-japan.com | 7.40/10 | - | - | Oct 2023 |
| 68 | softbankhawks.co.jp | 7.39/10 | 270 | 235 | Oct 2023 |
| 69 | subaru.jp | 7.38/10 | 670 | 316 | May 2026 |
| 70 | pola.co.jp | 7.36/10 | - | 27 | Oct 2023 |
| 71 | timee.co.jp | 7.35/10 | 18 | 10 | Sep 2024 |
| 72 | teachme.jp | 7.34/10 | - | 2 | Oct 2023 |
| 73 | drmartens.com | 7.33/10 | 527,400 | 138,695 | Oct 2023 |
| 74 | sanspo.com | 7.33/10 | 260 | 305 | Oct 2023 |
| 75 | netprotections.com | 7.31/10 | - | - | Oct 2023 |
| 76 | baycrews.jp | 7.26/10 | 420 | 877 | Oct 2023 |
| 77 | kaonavi.jp | 7.22/10 | 2 | 17 | Oct 2023 |
| 78 | onward.co.jp | 7.17/10 | 4 | 29 | Apr 2024 |
| 79 | jibunbank.co.jp | 7.17/10 | 4 | 22 | Oct 2023 |
| 80 | teikyo-u.ac.jp | 7.08/10 | 120 | 128 | Oct 2023 |
| 81 | rurubu.jp | 7.07/10 | 26 | 243 | Nov 2023 |
| 82 | mineo.jp | 7.07/10 | 65 | 66 | Oct 2023 |
| 83 | kidzania.jp | 7.07/10 | 160 | 131 | Oct 2023 |
| 84 | rentio.jp | 7.06/10 | 24 | 88 | May 2025 |
| 85 | hino.lg.jp | 7.05/10 | - | - | Oct 2026 |
| 86 | shingakunet.com | 7.04/10 | 1 | 7 | Oct 2026 |
| 87 | takarakuji-official.jp | 7.03/10 | 810 | 127 | Feb 2024 |
| 88 | gmo-pg.com | 7.02/10 | 190 | 89 | May 2024 |
| 89 | hikaritv.net | 7.02/10 | 18 | 44 | Aug 2026 |
| 90 | tohogas.co.jp | 7.02/10 | 23 | 37 | Oct 2023 |
| 91 | povo.jp | 7.02/10 | 120 | 300 | Jul 2025 |
| 92 | urban-research.jp | 7.02/10 | 110 | 154 | Oct 2023 |
| 93 | alphapolis.co.jp | 7.02/10 | 210 | 157 | May 2025 |
| 94 | sumitomo-rd.co.jp | 7.02/10 | 74 | 33 | Oct 2023 |
| 95 | recruit-ms.co.jp | 7.02/10 | - | 9 | Dec 2025 |
| 96 | mynavi-agent.jp | 7.02/10 | 1 | 4 | Oct 2023 |
| 97 | bbiq.jp | 7.02/10 | 4 | 13 | May 2026 |
| 98 | plaid.co.jp | 7.00/10 | 430 | 18 | Oct 2023 |
| 99 | shizuokabank.co.jp | 7.00/10 | 80 | 14 | Apr 2025 |
| 100 | bizreach.co.jp | 6.97/10 | 5 | 4 | 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) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).
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