CircuitSkill
Everything you need to master electronics is here: a library of 200+ schematics, online analog and microcontroller simulation, video courses, tools, and downloadable ebooks, all under one roof.
Added 7 Nov 2026
Analysed 7 Nov 2026
via 
What we found
- Analytics set tracking cookies before any opt-in, and we found no consent manager.
- There are no SPF or DMARC records, so anyone can send email that claims to come from this domain.
- It sends one of the six security headers we check; Content-Security-Policy is among those missing.
- Built with Next.js and React, the site is hosted on Vercel, with a domain registered 9 months before launch.
- One more gap is listed further down the page.
Built with: 16 technologies · Indie stack
Embed this on your site
For light pages
<a href="https://firstsited.com/launch/bvnl5s81/circuitskill"><img src="https://firstsited.com/badge/bvnl5s81/stack.svg" alt="CircuitSkill tech stack on FirstSited" height="28"></a>
For dark pages
<a href="https://firstsited.com/launch/bvnl5s81/circuitskill"><img src="https://firstsited.com/badge/bvnl5s81/stack.svg?theme=dark" alt="CircuitSkill 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 | |
Vercel DNS
|
DNS |
Vercel
|
Hosting |
| HSTS | Security |
| Build & Framework | |
Convex
|
BaaS |
Firebase
|
BaaS |
Tailwind CSS
|
CSS framework |
React
(2)
|
Framework |
Next.js
(6)
|
Meta-framework |
Lucide Icons
|
UI library |
Radix UI
|
UI library |
shadcn/ui
|
UI library |
| Analytics & Marketing | |
Google Analytics
(5)
|
Analytics |
Google Tag Manager
(4)
|
Tag management |
| Business Tools | |
Vercel Live
|
Collaboration |
| Other | |
Findly.tools
|
Directory |
Turbo0
|
Directory |
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) |
| 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 not detected | |
| Consent manager not detected; analytics set tracking cookies on our visit with no opt-in step |
Mentions: Cookies, Do Not Sell, Updated: June 10, 2025
| robots.txt | |
| sitemap.xml 61 URLs | |
| security.txt optional | |
| llms.txt optional | |
| ads.txt | |
| 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 | Not found at common selectors | |
| 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 | AMAZON-02 - Amazon.com, Inc., US AS16509, US |
|---|---|
| DNS | Vercel DNS authoritative nameservers |
| DNSSEC | Not enabled DNS answers are unsigned |
| Certificate | Let's Encrypt valid 21 Sep 2026 to 20 Dec 2026, as captured |
| Domain age | 10 months registered Jan 2026, Name.com, Inc. |
| Green hosting | No record per The Green Web Foundation |
| Page build | 29 JS files, 1 CSS file 4 third-party domains, code splitting |
| Brand colours |
Storage: 5 items
| Name | Lifetime | Set by |
|---|---|---|
| _ga | 1y | Google Analytics |
| _ga_PGV109QGSL | 1y | Google Analytics |
| Key | Size | Set by |
|---|---|---|
| tab | 10 B | - |
| Database | Version | Set by |
|---|---|---|
| firebase-heartbeat-database | 1 | Firebase |
| firebaseLocalStorageDb | 1 | Firebase |
Using 144 KB of browser storage (of a 10 GB quota).
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 209 ms | good, faster than 58% of sites |
| Largest contentful paint | 568 ms | good |
| Layout shift | 0.00 | good |
| Page weight | 1024 KB | fair |
| Image weight | 285 KB | light |
| Images | 28 | 1 larger than shown, 1 without width and height |
| 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 CSS signals +10 AI palette signals +5 AI stack signals +10 - Performance comes from one render on 7 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 7 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.