Seedream 5.5 by ByteDance
ByteDance's AI image model built for 100-round editing
Estimated origin: China
Added 11 Nov 2026
Analysed 11 Nov 2026
via 
What we found
- It sends one of the six security headers we check; Content-Security-Policy is among those missing.
- It has a privacy policy, but we found no terms of service.
- The page is missing Open Graph sharing tags, a canonical URL, and Twitter card tags.
- Built with React, the site is hosted on ByteDance Edge and served through Volcengine DCDN, with a domain registered in 2011.
Built with: 10 technologies
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For light pages
<a href="https://firstsited.com/launch/7dcvnly5/seedream-55-by-bytedance"><img src="https://firstsited.com/badge/7dcvnly5/stack.svg" alt="Seedream 5.5 by ByteDance tech stack on FirstSited" height="28"></a>
For dark pages
<a href="https://firstsited.com/launch/7dcvnly5/seedream-55-by-bytedance"><img src="https://firstsited.com/badge/7dcvnly5/stack.svg?theme=dark" alt="Seedream 5.5 by ByteDance tech stack on FirstSited" height="28"></a>
How it fits together
Each technology runs on, or extends, the one it sits under.
| Technology | Type |
|---|---|
| Infrastructure | |
| Volcengine DCDN | CDN |
| ByteDance DNS | DNS |
| ByteDance Edge | Hosting |
| HSTS | Security |
| Build & Framework | |
Tailwind CSS
|
CSS framework |
React
|
Framework |
Motion
|
JavaScript library |
React Router
|
JavaScript library |
| Analytics & Marketing | |
| ByteDance Rangers (2) | Analytics |
| AI & Emerging | |
Doubao
|
AI service |
Each technology links to its own page: which other new sites launched with it.
Site checks
| Custom title and meta description missing meta description | |
| Responsive viewport meta tag | |
| Favicon present | |
| Semantic HTML (nav, main, article) | |
| Open Graph tags (title, image, description) | |
| Canonical URL declared | |
| Twitter card meta tags |
| Referrer-Policy | |
| X-Frame-Options | |
| Permissions-Policy experimental | |
| X-Content-Type-Options | |
| Content-Security-Policy | |
| Strict-Transport-Security | |
| X-XSS-Protection deprecated, not counted |
| Privacy policy /privacy-policy | |
| Terms of service not detected | |
| Consent manager not detected; analytics set tracking cookies on our visit with no opt-in step |
Mentions: Cookies
| robots.txt | |
| sitemap.xml 35 URLs | |
| security.txt optional | |
| llms.txt optional | |
| ads.txt only for ad-funded sites | |
| humans.txt optional |
| llms.txt published not published | |
| No AI bots blocked in robots.txt | |
| Content-Signal none declared | |
| Link headers none advertised |
| State | Record | Status |
|---|---|---|
| SPF -all | Strict (-all) (from bytedance.com) | |
| DMARC p=quarantine | Quarantine (from bytedance.com) | |
| DKIM | Found (from bytedance.com) | |
| MTA-STS | Not deployed | |
| TLS-RPT | Not configured |
Hosting and network
| Network | Taobao - Zhejiang Taobao Network Co.,Ltd, CN AS24429, SG |
|---|---|
| DNSSEC | Enabled DNS answers are signed |
| Certificate | DigiCert Inc valid 19 Jan 2026 to 18 Jan 2027, as captured |
| Domain age | 15 years registered Nov 2011, eName Technology Co., Ltd. |
| Green hosting | No record per The Green Web Foundation |
| Page build | 8 JS files, 3 CSS files 3 third-party domains, code splitting |
Storage: 8 items
| Name | Lifetime | Set by |
|---|---|---|
| bd_sso_hi3jfd | 12mo | - |
| Key | Size | Set by |
|---|---|---|
| deviceId | 11 B | - |
| SLARDARresearch_ai | 196 B | - |
| userId | 10 B | - |
| __tea_cache_first_591312 | 1 B | - |
| __tea_cache_refer_591312 | 87 B | - |
| __tea_cache_tokens_591312 | 107 B | - |
| Key | Size | Set by |
|---|---|---|
| __tea_session_id_591312 | 78 B | ByteDance Rangers |
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 989 ms | faster than 10% of sites |
| Third-party domains | 3 |
Server response time from our crawl. Page weight and Core Web Vitals are measured on newer snapshots. How we measure
Notes
- Looks AI-built: no AI signals. How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
How we know
FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 11 November 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.