New: The State of Indie Launches: May 2026. What 17,652 indie launch pages run on once you strip Vercel out. Read

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Mermaid Studio

The easy way to work with Mermaid diagrams — preview, fix, and share, all in one place.

mdview.io · Added June 4, 2026 · Last analysed June 4, 2026 · via Hacker News · 60% unique tagline

StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 4 June 2026; the live site may have changed since.

Mermaid Studio ships with the basics, with a thorough launch checklist, fast page loads, and clean crawl signals. What needs work: missing several security headers, incomplete legal pages, and analytics without a consent banner.

Launched on Hacker News on June 3, 2026. The site is hosted on Fly.io in the United States. We've detected 11 technologies on this site, covering analytics, auth, build tooling, and CDN. The stack includes Clerk, Express, and Vite.

It's on a stack we've seen on only 4 launches.

If you own this site, refresh the snapshot and see the full fix list any time →

Vibe Score 10 · Few AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (11)

Infrastructure
CDN Cloudflare
DNS Namecheap DNS
Hosting Fly.io
Security Cloudflare Bot Management
Build & Framework
Auth Clerk
Build tool Vite
Font Google Fonts
Framework Express
Analytics & Marketing
Analytics NoCookieAnalytics
PostHog
SEO Google Search Console

Infrastructure

Network
AS40509 · US
DNS
Namecheap DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 11 May 2026 to 9 Aug 2026
Certificate as captured in this snapshot, not a live check.

Email Security

SPF Not published. Your domain can be spoofed in phishing emails.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC Not published. Receivers fall back to permissive defaults.
?
MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.
?
TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (11)

Cookies (6)
NameLifetimeDetected as
ph_phc_D4JBk2yjxp66dFJFpXuWVDVUnm3WeQKqN6ZtP2UkEqci_posthog 1y PostHog
_cfuvid session Cloudflare
__cf_bm < 1h Cloudflare
__client 1y Clerk
__client_uat 1y Clerk
__client_uat_pML6Hlgk 1y Clerk
Local storage (2)
KeySizeDetected as
ph_phc_D4JBk2yjxp66dFJFpXuWVDVUnm3WeQKqN6ZtP2UkEqci_posthog 1.3 KB PostHog
__clerk_environment 6.9 KB Clerk
Session storage (3)
KeySizeDetected as
ph_phc_D4JBk2yjxp66dFJFpXuWVDVUnm3WeQKqN6ZtP2UkEqci_posthog 296 B PostHog
ph_phc_D4JBk2yjxp66dFJFpXuWVDVUnm3WeQKqN6ZtP2UkEqci_primary_window_exists 4 B PostHog
ph_phc_D4JBk2yjxp66dFJFpXuWVDVUnm3WeQKqN6ZtP2UkEqci_window_id 38 B PostHog

Readiness Breakdown How?

Favicon present
Open Graph tags (title, image, description)
Canonical URL declared
Responsive viewport meta tag
Custom title and meta description
Twitter card meta tags
Semantic HTML (nav, main, article)
Page title is 70 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

Performance How?

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

Server response77 ms
Page weight2.0 MB
Largest contentful paint428 ms
Cumulative layout shift0.00

Vibe Score Breakdown How?

SignalPoints
AI palette signals +5
AI writing signals +5

This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.

AI Stance

No AI stance declared
llms.txt published
No AI bots blocked in robots.txt
? No directive declared
? None advertised

Well-Known Files

security.txt
llms.txt
ads.txt
humans.txt
? Privacy Policy not detected
? Terms of Service not detected
? Consent manager not detected
Analytics detected; tracking fires without visitor opt-in.
Detection works best on English language sites.

Security Headers (0/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Performance

77ms response time
Faster than 97% of sites
6 third-party domains loaded

Build

HTML minified
9 JS files
6 Third-party domains
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.