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Explainer

An interactive explainer for WebRTC SDP.

Developer Tools

Added August 27, 2026 · Last analysed August 27, 2026 · via Hacker News

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Screenshot of Explainer

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 27 August 2026; the live site may have changed since.

Explainer is missing several launch fundamentals. What needs work: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on August 27, 2026. The site is hosted on GitHub Pages and served through Fastly, with a domain registered in 2018. Our crawler found 5 technologies on this site, covering CDN, CSS frameworks, frameworks, and hosting. The stack includes Svelte, SvelteKit, and Tailwind CSS.

It's also 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 →

2.5
StackScope Score
Poor
88/100 Launch Readiness
Launch ready
0/6 Security Headers
Poor
0/3 Legal
Missing
0/2 Crawl files
Missing
100/100 Performance
Fast
Vibe Score 0 · No 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 (5)

Infrastructure
CDN Fastly
Hosting GitHub Pages
Build & Framework
CSS framework Tailwind CSS
Framework Svelte
Meta-framework SvelteKit (2)

Infrastructure

Network
FASTLY - Fastly, Inc., US
AS54113 · US
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Not green hosted
No green-energy record. Data from The Green Web Foundation.
SSL Certificate
Let's Encrypt
Valid 26 Aug 2026 to 24 Nov 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
8.5 years
Registered Feb 2018 · Libyan Spider Network (int)

Email Security

✓
SPF ~all (via apex pion.ly) Soft-fail (~all). Common and accepted.
✓
DKIM (via apex pion.ly) Detected on apex pion.ly
✗
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 (0)

This site uses no client-side storage we could detect on page load.

Readiness Breakdown How?

✓ 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

Performance How?

346 ms Server response
48% Faster than peers
516 ms Largest contentful paint
0.00 Cumulative layout shift
157 KB Page weight
1 Third-party domains
0 Console errors
0 Failed requests

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

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)

Build

0 JS files
1 CSS files
1 Third-party domains

Brand Colours

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