Boomsheet | Tech Stack & Analysis

What we found

It publishes DMARC but no SPF record, so receivers cannot tell which servers may send its email.
It sends three of the six security headers we check; Content-Security-Policy is among those missing.
The page is missing a canonical URL.
Built with Lovable and TanStack Start, the site is served through Cloudflare.
One more gap is listed further down the page.

Built with: 15 technologies

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For light pages

<a href="https://firstsited.com/launch/ggm9uisd/boomsheet"><img src="https://firstsited.com/badge/ggm9uisd/stack.svg" alt="Boomsheet tech stack on FirstSited" height="28"></a>

For dark pages

<a href="https://firstsited.com/launch/ggm9uisd/boomsheet"><img src="https://firstsited.com/badge/ggm9uisd/stack.svg?theme=dark" alt="Boomsheet tech stack on FirstSited" height="28"></a>

How it fits together

Each technology runs on, or extends, the one it sits under.

TanStack Router JavaScript library
- TanStack Start Meta-framework

Technology	Type
Infrastructure
Cloudflare (2)	CDN
GoDaddy DNS	DNS
Cloudflare Bot Management	Security
HSTS	Security
Build & Framework
Supabase (2)	BaaS
Tailwind CSS	CSS framework
Vite	Developer tools
Google Fonts	Font
React	Framework
TanStack Router	JavaScript library
TanStack Start	Meta-framework
Lucide Icons	UI library
shadcn/ui	UI library
Analytics & Marketing
Tinybird (2)	Analytics
AI & Emerging
Lovable (3)	AI builder

Each technology links to its own page: which other new sites launched with it.

Site checks

Page basicsHow we check
	Custom title and meta description
	Open Graph tags (title, image, description)
	Twitter card meta tags
	Responsive viewport meta tag
	Favicon present
	Semantic HTML (nav, main, article)
	Canonical URL declared

Security headersHow we check
	Referrer-Policy
	X-Frame-Options
	Permissions-Policy experimental
	X-Content-Type-Options
	Content-Security-Policy
	Strict-Transport-Security
	X-XSS-Protection deprecated, not counted

Legal pages
	Privacy policy /privacy
	Terms of service /terms
	Consent manager analytics set no tracking cookies on our visit (it may be opt-in)

Mentions: GDPR, Cookies

Crawl files
	robots.txt
	sitemap.xml
	security.txt optional
	llms.txt optional
	ads.txt only for ad-funded sites
	humans.txt optional

AI crawlers No stanceHow we check
	llms.txt published not published
	No AI bots blocked in robots.txt
	Content-Signal none declared
	Link headers none advertised

Email

Record	Status	What it does
SPF	Not published	Lists the servers allowed to send email for the domain.
DMARC p=quarantine	Quarantine	Tells receivers what to do with email that fails SPF or DKIM.
DKIM	Not found at common selectors	Signs outgoing email. We check common selectors only, so a provider may use another.
MTA-STS	Not deployed	Stops email to the domain being downgraded to plain text in transit.
TLS-RPT	Not configured	Sends the owner reports of failed encrypted deliveries.

Without SPF, receivers cannot tell which servers may send email for this domain.

Hosting and network

Network	CLOUDFLARENET - Cloudflare, Inc., US AS13335, AE
DNS	GoDaddy DNS authoritative nameservers
DNSSEC	Not enabled DNS answers are unsigned
Certificate	Google Trust Services valid 22 Oct 2026 to 20 Jan 2027, as captured
Green hosting	Yes per The Green Web Foundation
Page build	3 JS files, 2 CSS files 2 third-party domains
Brand colours

Storage: 2 items

Cookies 2
Name	Lifetime	Set by
__cf_bm	< 1h	Cloudflare
__dpl	23h	-

Performance

Measure	This site	Reading
Server response	1,022 ms	fair, faster than 10% of sites
Largest contentful paint	1,236 ms	good
Layout shift	0.39	a lot
Page weight	361 KB	light
Third-party domains	2
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: strong 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 writing signals	+3
Recognised AI builder signature	+100

Performance comes from one render on 8 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 8 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.