NerdKit
100% browser-local engineering toolkit: Audio Spectrogram & Lossless Analyzer, LLM Token & GPU VRAM Calculator, JSON/SQL/Regex Studio, PDF Editor, and 60+ instant developer tools with zero server uploads.
Estimated origin: South Korea
Added 11 Nov 2026
Analysed 11 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.
- Built with Next.js and React, the site is hosted on Vercel, with a domain registered 7 weeks before launch.
- It welcomes AI crawlers and publishes an llms.txt.
Built with: 18 technologies · Indie stack
Embed this on your site
For light pages
<a href="https://firstsited.com/launch/cey229c8/nerdkit"><img src="https://firstsited.com/badge/cey229c8/stack.svg" alt="NerdKit tech stack on FirstSited" height="28"></a>
For dark pages
<a href="https://firstsited.com/launch/cey229c8/nerdkit"><img src="https://firstsited.com/badge/cey229c8/stack.svg?theme=dark" alt="NerdKit 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 | |
Hosting.co.kr DNS
|
DNS |
Vercel
(2)
|
Hosting |
| HSTS | Security |
| Build & Framework | |
Supabase
|
BaaS |
Cloudflare Turnstile
|
Captcha |
Tailwind CSS
|
CSS framework |
React
(3)
|
Framework |
Lite YouTube Embed
|
JavaScript library |
| Pixabay | Media |
Next.js
(5)
|
Meta-framework |
Lucide Icons
|
UI library |
| Analytics & Marketing | |
Google Ads
|
Advertising |
Google AdSense
(3)
|
Advertising |
Google Analytics
(6)
|
Analytics |
Naver Analytics
|
Analytics |
Google Search Console
(2)
|
SEO |
Yandex Domain Verification
|
SEO |
Google Tag Manager
(5)
|
Tag management |
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 67 characters Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible. | |
| Meta description is 204 characters Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear. |
| 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 /en/privacy | |
| Terms of service /en/terms | |
| Consent manager not detected; analytics set tracking cookies on our visit with no opt-in step |
Mentions: Cookies, DPO
| robots.txt | |
| sitemap.xml 8 URLs | |
| security.txt optional | |
| llms.txt | |
| ads.txt | |
| humans.txt optional |
| llms.txt published | |
| 1 AI bot blocked in robots.txt the owner's choice | |
| 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 | Hosting.co.kr DNS authoritative nameservers |
| DNSSEC | Not enabled DNS answers are unsigned |
| Certificate | Let's Encrypt valid 22 Sep 2026 to 21 Dec 2026, as captured |
| Domain age | 1 month registered Sep 2026, Megazone Corp., dba HOSTING.KR |
| Green hosting | No record per The Green Web Foundation |
| Page build | 24 JS files, 2 CSS files 4 third-party domains, code splitting |
| App manifest | NerdKit - Developer & Marketer Tools display standalone; 6 icons |
Storage: 3 items
| Name | Lifetime | Set by |
|---|---|---|
| FCCDCF | 1y | - |
| _ga | 1y | Google Analytics |
| _ga_GNLLHML3NS | 1y | Google Analytics |
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 1,567 ms | slow, faster than 5% of sites |
| Largest contentful paint | 1,336 ms | good |
| Layout shift | 0.29 | a lot |
| Page weight | 1.0 MB | fair |
| 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 Placeholder branding +10 AI palette signals +5 AI writing signals +5 AI iconography signals +3 AI stack signals +10 Default scaffold favicon +10 - Analytics set tracking cookies on our visit and no consent manager was detected. UK and EU GDPR require opt-in before tracking runs, and more than 20 US states require honouring opt-out requests.
- Performance comes from one render on 11 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 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.