Websites Powered by Optimizely
66,497 websites tracked using Optimizely (A/B Testing) · www.optimizely.com
Optimizely is a tool for running A/B and multivariate experiments to compare page variants. Its official site is optimizely.com. PoweredBy tracks the websites that use Optimizely 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
10K
20K
30K
Apr 2018
May 2020
Jul 2022
Aug 2024
Sep 2026
Domains observed using Optimizely in each month's HTTP Archive crawl,
Apr 2018 to Sep 2026 · peak 29,730 in Sep 2024. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 2 s
INP 100 ms
CLS 0.05
TTFB 800 ms
Median site among 31,825 Optimizely sites with Chrome UX data, p75 values, Aug 2026.
Top countries
United States
25,512
Canada
6,167
India
4,899
United Kingdom
4,567
Australia
4,029
Germany
3,412
France
3,284
Spain
3,112
Sites using Optimizely by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Automotive | 9.91% | 6,883 |
| Healthcare | 0.85% | 907 |
| Finance and insurance | 0.72% | 119 |
| Restaurants and food | 0.54% | 741 |
| Education | 0.41% | 203 |
| Professional services | 0.25% | 104 |
| Games | 0.23% | 11 |
| Non-profit and religious | 0.22% | 17 |
| Home and construction | 0.15% | 70 |
| Legal | 0.15% | 34 |
| News and media | 0.12% | 51 |
| Retail | 0.12% | 365 |
Share of each industry's websites with a detected stack that use Optimizely; industries come from what sites declare in their own structured data.
Top sites by authority
9+
8% · 31 of 372 sites
8+
5% · 409 of 7,677 sites
7+
3% · 1,164 of 45,712 sites
6+
2% · 1,833 of 110,136 sites
5+
1% · 2,639 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Optimizely in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Optimizely
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 3001 | crsricebowl.org | 4.69/10 | - | - | Mar 2023 |
| 3002 | wallace.edu | 4.69/10 | - | - | Jul 2026 |
| 3003 | xplor.travel | 4.69/10 | - | - | Jun 2016 |
| 3004 | startia.co.jp | 4.69/10 | - | - | Sep 2024 |
| 3005 | lanterncredit.com | 4.69/10 | - | - | Sep 2021 |
| 3006 | westmoreland.edu | 4.69/10 | - | - | May 2025 |
| 3007 | wc.edu | 4.69/10 | - | - | Sep 2025 |
| 3008 | nugs.tv | 4.69/10 | - | - | Sep 2021 |
| 3009 | airfrance.ca | 4.69/10 | - | - | May 2017 |
| 3010 | ccbc.edu | 4.69/10 | - | - | Feb 2025 |
| 3011 | airfrance.in | 4.69/10 | - | - | Jun 2020 |
| 3012 | klm.it | 4.69/10 | - | - | Feb 2019 |
| 3013 | mrgreen.se | 4.69/10 | - | - | Mar 2024 |
| 3014 | mimco.com.au | 4.69/10 | - | - | Jan 2016 |
| 3015 | nnespana.es | 4.69/10 | - | - | Nov 2023 |
| 3016 | klm.cz | 4.69/10 | - | - | Dec 2020 |
| 3017 | bulldogs.com.au | 4.69/10 | - | - | Mar 2024 |
| 3018 | fantasticfurniture.com.au | 4.69/10 | - | - | Jan 2016 |
| 3019 | levis.com.au | 4.69/10 | - | - | Jul 2025 |
| 3020 | sre-group.co.jp | 4.69/10 | - | - | Feb 2020 |
| 3021 | sharks.com.au | 4.69/10 | - | - | Mar 2024 |
| 3022 | newcastleknights.com.au | 4.69/10 | - | - | Mar 2024 |
| 3023 | klm.ch | 4.69/10 | - | - | Dec 2020 |
| 3024 | politix.com.au | 4.69/10 | - | - | Dec 2019 |
| 3025 | dragons.com.au | 4.69/10 | - | - | Mar 2024 |
| 3026 | ef.pl | 4.69/10 | - | - | Aug 2023 |
| 3027 | klm.se | 4.69/10 | - | - | Jan 2019 |
| 3028 | teem.com | 4.68/10 | - | - | May 2017 |
| 3029 | hopethemission.org | 4.68/10 | - | - | May 2024 |
| 3030 | cactus.lu | 4.68/10 | - | - | Jul 2026 |
| 3031 | aidiver.jp | 4.68/10 | - | - | Oct 2025 |
| 3032 | londres.fr | 4.68/10 | - | - | Feb 2024 |
| 3033 | miaxglobal.com | 4.67/10 | - | - | Apr 2026 |
| 3034 | youfoodz.com | 4.67/10 | - | - | Jun 2017 |
| 3035 | wards.com | 4.67/10 | - | - | Oct 2024 |
| 3036 | redpocket.com | 4.67/10 | - | - | Jan 2023 |
| 3037 | pedigreefoundation.org | 4.67/10 | - | - | May 2024 |
| 3038 | nescafe-dolcegusto.com.br | 4.67/10 | - | - | Mar 2024 |
| 3039 | shinjuku-law.jp | 4.67/10 | - | - | Jan 2021 |
| 3040 | alzheimersla.org | 4.66/10 | 800 | 761 | May 2024 |
| 3041 | jewlr.com | 4.66/10 | - | - | Sep 2026 |
| 3042 | morton.edu | 4.66/10 | - | - | Mar 2025 |
| 3043 | themarketingmillennials.com | 4.65/10 | - | - | Mar 2024 |
| 3044 | omaze.co.uk | 4.65/10 | - | - | Aug 2021 |
| 3045 | unicef.by | 4.65/10 | - | - | Aug 2022 |
| 3046 | zwischengas.com | 4.65/10 | - | - | Oct 2025 |
| 3047 | desertfinancial.com | 4.64/10 | - | - | May 2023 |
| 3048 | goodwillindy.org | 4.64/10 | - | - | May 2024 |
| 3049 | therenditionproject.org.uk | 4.64/10 | - | - | Jan 2021 |
| 3050 | coastalbend.edu | 4.64/10 | - | - | Jun 2025 |
| 3051 | nywf.org | 4.64/10 | - | - | May 2024 |
| 3052 | pourmoi.co.uk | 4.64/10 | - | - | Sep 2026 |
| 3053 | voipsupply.com | 4.63/10 | - | - | Sep 2026 |
| 3054 | viovet.co.uk | 4.63/10 | - | - | Aug 2026 |
| 3055 | flyingbiscuit.com | 4.63/10 | - | - | Dec 2025 |
| 3056 | coates.com.au | 4.63/10 | - | - | Aug 2025 |
| 3057 | klm.pl | 4.63/10 | - | - | Jan 2019 |
| 3058 | torfs.be | 4.62/10 | - | - | Sep 2026 |
| 3059 | octech.edu | 4.62/10 | - | - | Aug 2023 |
| 3060 | milanlaser.com | 4.61/10 | - | - | Jul 2025 |
| 3061 | gerberlife.com | 4.61/10 | - | - | May 2017 |
| 3062 | jcehrlich.com | 4.61/10 | - | - | Jun 2016 |
| 3063 | aeg.be | 4.61/10 | 15 | 40 | Nov 2023 |
| 3064 | tsc.edu | 4.61/10 | - | - | May 2025 |
| 3065 | hunkemoller.es | 4.61/10 | - | - | Sep 2026 |
| 3066 | oxfordclub.com | 4.60/10 | - | - | Jun 2018 |
| 3067 | marriottvacationclub.com | 4.60/10 | - | - | Sep 2021 |
| 3068 | hunkemoller.ch | 4.60/10 | - | - | Sep 2026 |
| 3069 | deliverfund.org | 4.60/10 | - | - | Sep 2024 |
| 3070 | vaillant.it | 4.60/10 | - | - | May 2017 |
| 3071 | lrcc.edu | 4.60/10 | - | - | Jul 2024 |
| 3072 | disfrutamadrid.com | 4.59/10 | - | - | Feb 2024 |
| 3073 | harlemgrown.org | 4.59/10 | - | - | Nov 2025 |
| 3074 | stoneriverelearning.com | 4.58/10 | - | - | Jun 2017 |
| 3075 | cei.edu | 4.58/10 | - | - | Mar 2020 |
| 3076 | kaufdichgluecklich-shop.de | 4.58/10 | - | - | Jan 2016 |
| 3077 | klm.co.in | 4.58/10 | - | - | Apr 2019 |
| 3078 | hillcollege.edu | 4.57/10 | - | - | Jul 2026 |
| 3079 | airnewzealand.eu | 4.56/10 | 2,400 | 524 | Dec 2019 |
| 3080 | helenacollege.edu | 4.56/10 | - | - | Jul 2025 |
| 3081 | relationshipone.com | 4.55/10 | - | - | Apr 2025 |
| 3082 | aujourdhui.com | 4.55/10 | 16 | 88 | Aug 2018 |
| 3083 | rivermuseum.org | 4.55/10 | - | - | May 2024 |
| 3084 | dulux.co.nz | 4.54/10 | - | - | Jul 2023 |
| 3085 | thestreet.org.au | 4.54/10 | - | - | Nov 2019 |
| 3086 | vpcc.edu | 4.54/10 | - | - | May 2024 |
| 3087 | gehealthcare.de | 4.54/10 | - | - | Apr 2023 |
| 3088 | grantthornton.jp | 4.54/10 | - | - | Jun 2024 |
| 3089 | teamflowhq.com | 4.53/10 | - | - | Sep 2021 |
| 3090 | hopeatlanta.org | 4.53/10 | - | - | Jun 2024 |
| 3091 | pageexecutive.com | 4.53/10 | - | - | Dec 2023 |
| 3092 | myagro.org | 4.53/10 | - | - | May 2024 |
| 3093 | cordblood.com | 4.53/10 | - | - | Jan 2016 |
| 3094 | ajprodukter.dk | 4.53/10 | 45 | 43 | Mar 2022 |
| 3095 | morethan.com | 4.52/10 | - | - | Jan 2019 |
| 3096 | drogas.lv | 4.52/10 | - | - | Sep 2026 |
| 3097 | aatkings.com | 4.52/10 | 1,400 | 1,137 | Nov 2019 |
| 3098 | lifebox.org | 4.52/10 | - | - | Jan 2025 |
| 3099 | tomfordbeauty.com | 4.52/10 | - | - | Oct 2024 |
| 3100 | michaelpage.com.sg | 4.52/10 | - | - | Jan 2016 |
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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