opensea.io

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opensea.io is ranked #4,418 in the Tranco list of the world's most popular websites (list of Oct 13, 2026), down 18 places in four weeks. The domain was registered on Dec 27, 2017, 8 years, 9 months ago, through Gandi SAS, and is paid up until Dec 27, 2026. Its homepage uses Next.js and React. It is served through Cloudflare and Vercel.

Global rank

#4,418

▼ 3 this week

Domain age

8 years

since Dec 27, 2017

Technologies

detected on the homepage

SEO score

98/100

homepage checks

Popularity rank

#4,418 of the top 1 million sites in the Tranco research ranking, which averages several traffic and DNS sources over 30 days. Best rank in the period shown: #4,244.

Weekly Tranco rank (lower is more popular).

See where opensea.io sits in the top 10,000

Domain registration

Registered: Dec 27, 2017 (8 years, 9 months ago)
Expires: Dec 27, 2026
Registrar: Gandi SAS
Name servers: arch.ns.cloudflare.com, nicole.ns.cloudflare.com
DNSSEC: Not signed

From the registry's public RDAP record, checked Oct 14, 2026.

Technology stack

JavaScript frameworks

Next.js React

CDN

Cloudflare

Hosting

Vercel

Detected from the homepage HTML and response headers on Oct 14, 2026. Tools loaded only after scripts run (or after consent banners) may be missing.

Homepage SEO check

Checked from the HTML our scanner received on Oct 14, 2026. Content added later by JavaScript isn't counted.

98/100

https://opensea.io/

OpenSea, exchange everything — token trading and NFT marketplace

OpenSea, exchange everything — token trading and NFT marketplace. Welcome to the best place to discover, trade, and create onchain.

22 passed · 1 warnings · 0 failed

Content

✓Title64 characters
✓Meta description131 characters
✓H1 headingExactly one H1
!SubheadingsNo H2 headings in the served HTML
✓Image alt textAll 120 images have alt text
✓Content lengthAbout 827 words

Indexing

✓IndexableNo noindex directive
✓Canonical URLhttps://opensea.io
✓robots.txtFound
✓XML sitemapFound
✓Language attributeen-US
ihreflang8 language alternates
✓Structured dataBreadcrumbList, WebSite

Social sharing

✓Open GraphTitle, description and image set
✓Twitter / X cardsummary_large_image

Technical

✓HTTPSServed over HTTPS
✓Mobile viewportFound
✓FaviconFound
✓Character encodingutf-8

Security headers

✓Strict-Transport-SecuritySet
✓Content-Security-PolicySet
✓Clickjacking protectionSet
✓X-Content-Type-OptionsSet
✓Referrer-PolicySet

Server response

Final URL: https://opensea.io/
HTTP status: 200
Server: cloudflare
Response time: 246 ms (first byte 233 ms, from our scanner in a US data centre)
HTML size: 2.2 MB
Compression: br

Sites with a similar tech stack

Rank	Website	Built with
#1,480	notion.com	Next.js, React, Vercel
#1,981	1password.com	Next.js, React, Vercel
#2,126	matterport.com	Next.js, React, Vercel
#2,141	notion.so	Next.js, React, Vercel
#2,255	nodejs.org	Next.js, React, Vercel
#2,394	notion.site	Next.js, React, Vercel

Sites ranked near opensea.io

Rank	Website	Registered	Built with
#4,413	nationalacademies.org	1999	Akamai, Fastly, Google Tag Manager
#4,414	ana.co.jp	—	Akamai, Apache, jQuery
#4,415	belkin.com	1996	Cloudflare, unpkg, Cloudflare Web Analytics
#4,416	my.games	2019	Nuxt, Vue.js, Nginx
#4,417	joom.com	2000	—
#4,419	google.co.ke	2003	—
#4,420	ngxcld.com	2014	—
#4,421	zmaticoo.com	2022	Nginx, jQuery
#4,422	defense.gov	2002	Akamai
#4,423	udag.de	—	—

Questions about opensea.io

How popular is opensea.io?

opensea.io is #4,418 worldwide in the Tranco list published Oct 13, 2026.

How old is opensea.io?

opensea.io was registered on Dec 27, 2017, which makes the domain 8 years, 9 months old.

What is opensea.io built with?

We detected Next.js, React, Cloudflare and Vercel on its homepage.

Who is the registrar of opensea.io?

Gandi SAS, according to the registry's RDAP record.