openconstructor
Build interfaces with words and blocks: 320+ components, AI with your own key, export to HTML, React, Vue, Svelte, Roblox Luau and LÖVE 2D. Free and open source.
Estimated origin: Palau
Added 10 Nov 2026
Analysed 10 Nov 2026
via 
What we found
- There are no SPF or DMARC records, so anyone can send email that claims to come from this domain.
- It sends none of the six security headers we check.
- Built with React and Supabase, the site is served through Cloudflare, with a domain registered 3 days before launch.
Built with: 15 technologies · Indie stack
Embed this on your site
For light pages
<a href="https://firstsited.com/launch/w12zwbm2/openconstructor"><img src="https://firstsited.com/badge/w12zwbm2/stack.svg" alt="openconstructor tech stack on FirstSited" height="28"></a>
For dark pages
<a href="https://firstsited.com/launch/w12zwbm2/openconstructor"><img src="https://firstsited.com/badge/w12zwbm2/stack.svg?theme=dark" alt="openconstructor 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 | |
Cloudflare
|
CDN |
Cloudflare DNS
|
DNS |
| HTTP/3 | Protocol |
Resend
|
Transactional email |
| Build & Framework | |
Supabase
(2)
|
BaaS |
Tailwind CSS
|
CSS framework |
Vite
|
Developer tools |
Google Fonts
|
Font |
React
|
Framework |
Motion
|
JavaScript library |
| Analytics & Marketing | |
Cloudflare Web Analytics
(2)
|
Analytics |
Google Search Console
|
SEO |
| AI & Emerging | |
Anthropic
|
AI API |
OpenAI API
|
AI API |
OpenRouter
|
AI API |
Each technology links to its own page: which other new sites launched with it.
Site checks
| 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) | |
| Page title is 80 characters Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible. |
| 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 | |
| Terms of service /terms | |
| Consent manager analytics set no tracking cookies on our visit (it may be opt-in) |
Mentions: Cookies, Do Not Sell, Updated: November 6, 2026
| robots.txt | |
| sitemap.xml 24 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 | Not published | |
| DMARC | Not published | |
| DKIM | Found | |
| MTA-STS | Not deployed | |
| TLS-RPT | Not configured |
Without SPF and DMARC, anyone can send email that claims to come from this domain. Those two are the records to add first.
Hosting and network
| Network | CLOUDFLARENET - Cloudflare, Inc., US AS13335, US |
|---|---|
| DNS | Cloudflare DNS authoritative nameservers |
| DNSSEC | Not enabled DNS answers are unsigned |
| Certificate | Google Trust Services valid 6 Nov 2026 to 4 Feb 2027, as captured |
| Domain age | 5 days registered Nov 2026, NameSilo, LLC |
| Green hosting | Yes per The Green Web Foundation |
| Page build | 2 JS files, 5 CSS files 4 third-party domains |
| App manifest | openconstructor display standalone; 3 icons |
| Brand colours |
Storage: 8 items
| Key | Size | Set by |
|---|---|---|
| form-canvas-v3 | 2 B | - |
| oc-last-ai | 4 B | - |
| oc-layout | 106 B | - |
| oc-local-id | 36 B | - |
| oc-t:visit:2026-11-10 | 1 B | - |
| Database | Version | Set by |
|---|---|---|
| oc-history | 1 | - |
| oc-projects | 1 | - |
| oc-vault | 1 | - |
Using 216 KB of browser storage (of a 10 GB quota).
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 112 ms | good, faster than 80% of sites |
| Largest contentful paint | 1,684 ms | good |
| Layout shift | 0.29 | a lot |
| Page weight | 839 KB | light |
| Images | 3 | 1 without width and height, 1 without alt text |
| Third-party domains | 4 | |
| Console errors | 0 | none |
| Failed requests | 0 | none |
From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure
Notes
-
Looks AI-built: some AI signals.
How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
Which signals fired
Signal Points AI onboarding signals +5 AI palette signals +5 AI writing signals +5 AI typography signals +15 AI layout signals +5 - Performance comes from one render on 10 November 2026 and will vary between visits.
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 10 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.