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Seedance 2.1

Seedance 2.1 creates 1080p AI videos from text, images, and audio. Perfect for ads, social media, and creative projects. Start generating cinematic videos today.

AI
China Estimated origin: China

Added June 16, 2026 · Last analysed June 16, 2026 · via

StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 16 June 2026; the live site may have changed since.

Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.

Seedance 2.1 is largely in shape, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: missing several security headers, tracking cookies set before any opt-in, and incomplete email security.

Launched on Product Hunt on June 16, 2026. The site is hosted on Vercel and served through Cloudflare. The crawl picked up 14 technologies on this site, covering analytics, security, auth, and CDN. The stack includes Clerk, Next.js, and React.

For context, it's on one of the most common stacks we track, shared by 14,964 launches.

If you own this site, refresh the snapshot and see the full fix list any time →

Vibe Score 45 · Some AI signals
How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (14)

Infrastructure
CDN Cloudflare
DNS Cloudflare DNS
Hosting Vercel
Security Cloudflare Bot Management
HSTS
Email
Email forwarding Cloudflare Email Routing (2)
Build & Framework
Auth Clerk (2)
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js
UI library shadcn/ui
Analytics & Marketing
Analytics CNZZ
Umami
SEO Google Search Console

Infrastructure

Network
AS16509 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Not green hosted
No green-energy record. Data from The Green Web Foundation.
SSL Certificate
Let's Encrypt
Valid 2 Jun 2026 to 31 Aug 2026
Certificate as captured in this snapshot, not a live check.

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC Not published. Receivers fall back to permissive defaults.
?
MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.
?
TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (9)

Cookies (8)
NameLifetimeDetected as
CNZZDATA1281417985 6mo -
CNZZDATA1281482375 6mo -
UM_distinctid 6mo Umami
_cfuvid session Cloudflare
__cf_bm < 1h Cloudflare
__client 1y Clerk
__client_uat 1y Clerk
__client_uat_53TXjBox 1y Clerk
Local storage (1)
KeySizeDetected as
__clerk_environment 6.3 KB Clerk

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description)
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
Meta description is 162 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

226 ms Server response
61% Faster than peers
264 ms Largest contentful paint
0.00 Cumulative layout shift
969 KB Page weight
323 KB Image weight
5 Third-party domains
2 Console errors
2 Failed requests

9 images: 7 oversized, 7 without width/height

Broken first-party requests (2), worth fixing
  • 404 /blog/seedance-21-vs-seedance-20?_rsc=3lb4g
  • 404 /refund?_rsc=3lb4g

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

Vibe Score Breakdown How?

SignalPoints
AI CSS signals +10
AI copy signals +5
AI onboarding signals +5
AI palette signals +5
AI writing signals +5
AI stack signals +10
AI layout signals +5

This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.

AI Stance

Welcomes AI crawlers
llms.txt published
No AI bots blocked in robots.txt
? No directive declared
? None advertised

Well-Known Files

robots.txt
sitemap.xml (4 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/subsidiary/privacy-policy
Terms of Service
/subsidiary/terms-of-service
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
18% unique

Security Headers (1/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

Code splitting
24 JS files
1 CSS files
5 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.