Websites Powered by Clerk.io
2,873 websites tracked using Clerk.io (Personalisation) · clerk.io
Clerk.io is a personalization engine that tailors content to each visitor. Its official site is clerk.io. PoweredBy tracks the websites that use Clerk.io across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the personalisation ecosystem.
Usage trend
1K
2K
3K
Feb 2021
Jul 2022
Dec 2023
Apr 2025
Sep 2026
Domains observed using Clerk.io in each month's HTTP Archive crawl,
Feb 2021 to Sep 2026 · peak 2,132 in Apr 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 700 ms
Median site among 2,049 Clerk.io sites with Chrome UX data, p75 values, Sep 2026.
Top countries
Italy
520
Denmark
484
Germany
430
United Kingdom
384
Netherlands
327
Norway
317
France
289
United States
284
Sites using Clerk.io by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Industrial and manufacturing | 0.05% | 2 |
| Retail | 0.05% | 137 |
| Pets and animals | 0.04% | 1 |
| Beauty and wellness | 0.02% | 4 |
| Automotive | <0.01% | 4 |
| Home and construction | <0.01% | 2 |
| Healthcare | <0.01% | 1 |
Share of each industry's websites with a detected stack that use Clerk.io; industries come from what sites declare in their own structured data.
Top sites by authority
9+
<1% · 2 of 372 sites
8+
<1% · 2 of 7,677 sites
7+
<1% · 7 of 45,712 sites
6+
<1% · 12 of 110,136 sites
5+
<1% · 35 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Clerk.io in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Clerk.io
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | myshopify.com | 9.12/10 | - | - | May 2022 |
| 2 | uk.com | 9.00/10 | 2 | 12 | Feb 2026 |
| 3 | billetto.se | 7.60/10 | 31 | 136 | Feb 2021 |
| 4 | billetto.dk | 7.47/10 | 48 | 186 | Feb 2021 |
| 5 | clerk.io | 7.02/10 | 150 | 177 | Oct 2022 |
| 6 | wki.it | 7.02/10 | - | - | Jul 2024 |
| 7 | 11freunde.de | 7.02/10 | 150 | 428 | May 2026 |
| 8 | macrolibrarsi.it | 6.95/10 | 100 | 710 | Sep 2024 |
| 9 | universitetsforlaget.no | 6.74/10 | 4 | 34 | Feb 2021 |
| 10 | rickowens.eu | 6.73/10 | 96,500 | 8,561 | Feb 2026 |
| 11 | billetto.co.uk | 6.69/10 | 97 | 495 | Feb 2021 |
| 12 | bscyb.ch | 6.24/10 | 330 | 312 | Nov 2022 |
| 13 | aschehoug.no | 5.93/10 | 19 | 84 | Feb 2021 |
| 14 | avxperten.dk | 5.90/10 | 490 | 1,973 | Jan 2026 |
| 15 | rs.no | 5.86/10 | 11 | 31 | Sep 2023 |
| 16 | bauknecht.de | 5.77/10 | 10 | 68 | Jul 2026 |
| 17 | fermliving.com | 5.70/10 | 660 | 2,086 | May 2024 |
| 18 | lhl.no | 5.69/10 | 56 | 39 | Jun 2026 |
| 19 | voetbalshop.nl | 5.65/10 | 170 | 1,661 | Feb 2021 |
| 20 | mohd.it | 5.65/10 | 3,700 | 298 | Feb 2021 |
| 21 | smnovella.com | 5.58/10 | 2,700 | 53 | Jun 2024 |
| 22 | chemist-4-u.com | 5.48/10 | 15,800 | 17,801 | Feb 2021 |
| 23 | assos.com | 5.41/10 | 8,800 | 2,785 | Jan 2026 |
| 24 | tannico.it | 5.40/10 | 110 | 686 | Feb 2021 |
| 25 | homeshop.dk | 5.31/10 | - | 53 | Feb 2021 |
| 26 | santinicycling.com | 5.29/10 | 3,700 | 1,425 | Apr 2023 |
| 27 | whirlpool.it | 5.29/10 | 62 | 174 | Jul 2026 |
| 28 | seco.com | 5.28/10 | 28 | 121 | Mar 2023 |
| 29 | billetto.no | 5.28/10 | 12 | 43 | Feb 2021 |
| 30 | el-puente.de | 5.28/10 | 9 | 16 | Jun 2025 |
| 31 | thebodyshop.in | 5.25/10 | 1,100 | 2,276 | Sep 2026 |
| 32 | volkswagen.dk | 5.23/10 | 37 | 83 | Jul 2023 |
| 33 | grejfreak.dk | 5.18/10 | 30 | 184 | Feb 2021 |
| 34 | trony.it | 5.14/10 | 81 | 309 | Feb 2021 |
| 35 | emmasdiary.co.uk | 5.14/10 | 76,000 | 62,751 | Aug 2022 |
| 36 | dpf.dk | 4.99/10 | - | - | Feb 2025 |
| 37 | billetto.eu | 4.96/10 | 7 | 8 | Feb 2021 |
| 38 | ljusgiganten.se | 4.87/10 | - | - | Sep 2021 |
| 39 | skechers.se | 4.84/10 | - | - | Feb 2021 |
| 40 | whirlpool.fr | 4.83/10 | - | - | Jul 2026 |
| 41 | hotpoint.co.uk | 4.80/10 | - | - | Sep 2025 |
| 42 | bloomingville.com | 4.79/10 | - | - | Aug 2021 |
| 43 | billetto.it | 4.76/10 | 2 | 9 | Feb 2021 |
| 44 | arcaplanet.it | 4.74/10 | 52 | 273 | Nov 2021 |
| 45 | epictv.com | 4.70/10 | - | - | Jul 2026 |
| 46 | rikorda.it | 4.69/10 | - | - | Feb 2021 |
| 47 | naturalbabyshower.co.uk | 4.69/10 | - | - | Feb 2021 |
| 48 | apuls.dk | 4.69/10 | 1 | 35 | Mar 2021 |
| 49 | silikomart.com | 4.69/10 | - | - | Feb 2021 |
| 50 | campustore.it | 4.69/10 | - | - | Jul 2022 |
| 51 | evasolo.com | 4.69/10 | - | - | Dec 2022 |
| 52 | tecnomat.it | 4.69/10 | - | - | Feb 2025 |
| 53 | skechers.dk | 4.69/10 | - | - | Feb 2021 |
| 54 | matrasaanhuis.nl | 4.69/10 | - | - | Mar 2023 |
| 55 | mshop.se | 4.69/10 | - | - | Feb 2021 |
| 56 | montura.it | 4.69/10 | - | - | Aug 2023 |
| 57 | privateplay.dk | 4.69/10 | - | - | Mar 2021 |
| 58 | denintelligentekrop.dk | 4.66/10 | - | - | Feb 2021 |
| 59 | fuau.dk | 4.61/10 | - | - | Feb 2022 |
| 60 | panzerglass.com | 4.53/10 | - | - | Feb 2023 |
| 61 | deens.nl | 4.52/10 | - | - | Sep 2026 |
| 62 | verpakkingenxl.nl | 4.45/10 | - | - | Feb 2022 |
| 63 | friluft.dk | 4.38/10 | - | - | Jul 2021 |
| 64 | partywinkel.nl | 4.37/10 | - | - | Sep 2022 |
| 65 | ewheels.se | 4.36/10 | - | - | Mar 2022 |
| 66 | outland.no | 4.35/10 | - | - | Mar 2025 |
| 67 | terranovastyle.com | 4.34/10 | - | - | Apr 2022 |
| 68 | voetbalshirtskoning.nl | 4.32/10 | - | - | Dec 2021 |
| 69 | oktober.no | 4.31/10 | - | - | Aug 2021 |
| 70 | gymkompaniet.se | 4.30/10 | - | - | Feb 2021 |
| 71 | flinndal.nl | 4.29/10 | - | - | Feb 2021 |
| 72 | chicwish.com | 4.28/10 | - | - | Jul 2026 |
| 73 | vardvaskan.se | 4.25/10 | - | - | Feb 2021 |
| 74 | df-sportspecialist.it | 4.22/10 | - | - | Jul 2025 |
| 75 | restaurantinventar.dk | 4.17/10 | - | - | Sep 2023 |
| 76 | mcneelamusic.com | 4.15/10 | - | - | Nov 2023 |
| 77 | backpackerlife.dk | 4.14/10 | 18 | 127 | Oct 2021 |
| 78 | whirlpool.pl | 4.13/10 | - | - | Aug 2026 |
| 79 | sinnerup.dk | 4.12/10 | - | - | Jul 2024 |
| 80 | billetto.es | 4.12/10 | 11 | 60 | Feb 2021 |
| 81 | colorfulstandard.com | 4.11/10 | - | - | Jul 2021 |
| 82 | subcultures.nl | 4.11/10 | - | - | Dec 2021 |
| 83 | mshop.dk | 4.10/10 | - | - | Feb 2021 |
| 84 | oxwork.com | 4.09/10 | - | - | May 2022 |
| 85 | saemereien.ch | 4.09/10 | - | - | Feb 2021 |
| 86 | bogensportwelt.de | 4.08/10 | - | - | Feb 2021 |
| 87 | baumundpferdgarten.com | 4.08/10 | 330 | 217 | Apr 2025 |
| 88 | enamelcopenhagen.dk | 4.07/10 | - | - | Jan 2022 |
| 89 | beautycos.dk | 4.07/10 | 70 | 544 | Dec 2023 |
| 90 | degroenelinde.nl | 4.06/10 | - | - | Jun 2022 |
| 91 | fermliving.us | 4.05/10 | - | - | May 2024 |
| 92 | billetto.nl | 4.03/10 | - | 5 | Feb 2021 |
| 93 | ledlichtdiscounter.nl | 4.01/10 | - | - | Jun 2022 |
| 94 | 123installatiematerialen.nl | 4.01/10 | 16 | 118 | Sep 2026 |
| 95 | theposterclub.com | 4.00/10 | - | - | Apr 2026 |
| 96 | stelton.com | 4.00/10 | - | - | Jun 2022 |
| 97 | hagi.com.pl | 4.00/10 | - | - | Dec 2025 |
| 98 | fuaalborg.dk | 3.99/10 | - | - | Feb 2023 |
| 99 | billetto.fr | 3.99/10 | - | 5 | Feb 2021 |
| 100 | feestbazaar.nl | 3.99/10 | - | - | Aug 2021 |
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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