Iesna

Show HN: Browser-based light pollution simulator using real photometric data

Estimated origin: Germany

Added April 30, 2026 · Last analysed April 30, 2026 · via Hacker News · 67% unique tagline

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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 30 April 2026; the live site may have changed since.

Iesna still has work before launch. Worth fixing first: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on April 30, 2026. The site is hosted on This is the joint network for IONOS in Germany. The crawl picked up 2 technologies on this site, covering DNS providers and servers. The stack includes INWX and nginx.

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

0.8

StackScope Score

Poor

29/100 Launch Readiness

Needs work

0/6 Security Headers

Poor

0/3 Legal

Missing

0/2 Crawl files

Missing

Vibe Score 10 · Few AI signals

How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (2)

Infrastructure

DNS	INWX
Server	nginx (2)

Infrastructure

Network

IONOS-AS This is the joint network for IONOS, Fasthosts, Arsys, 1&1 Mail and Media and 1&1 Telecom. Formerly known as 1&1 Internet SE., DE

AS8560 · DE

DNS

INWX

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Let's Encrypt

Valid 16 Mar 2026 to 14 Jun 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 (1)

Local storage (1)

Key	Size	Detected as
eulumdat_language	2 B	-

Readiness Breakdown How?

⚠

Custom title and meta description (partial) missing meta description

✓ Responsive viewport meta tag

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

- Favicon present

- Semantic HTML (nav, main, article)

Vibe Score Breakdown How?

Signal	Points
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

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✗ robots.txt

✗ sitemap.xml

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

? Terms of Service not detected

Detection works best on English language sites.

Security Headers (0/6)

✗

Referrer-Policy

✗

X-Frame-Options

✗

Permissions-Policy experimental (check browser support)

✗

X-Content-Type-Options

✗

Content-Security-Policy

✗

Strict-Transport-Security

–

X-XSS-Protection deprecated (use Content-Security-Policy)

Performance

125ms response time

Faster than 88% of sites

Build

✓ Code splitting

5 JS files

1 CSS files

0 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.