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Perfunct

Show HN: A zero-lag, scriptable video filter (RVM,Python,OpenCV,OpenGL,Spout2)

Added July 23, 2026 · Last analysed July 23, 2026 · via Hacker News · 78% unique tagline

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Screenshot of Perfunct

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 23 July 2026; the live site may have changed since.

Perfunct is missing several launch fundamentals. Visible gaps: missing several security headers, incomplete legal pages, and no sitemap.

Launched on Hacker News on July 23, 2026. The site is served through Cloudflare, with a domain registered 3 months before launch. Our crawler found 5 technologies on this site, covering DNS providers, CDN, email forwarding, and protocol. The stack includes Cloudflare, Cloudflare DNS, and HTTP/3.

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

2.2
StackScope Score
Poor
41/100 Launch Readiness
Partially ready
0/6 Security Headers
Poor
0/3 Legal
Missing
1/2 Crawl files
Partial
70/100 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 Cloudflare
DNS Cloudflare DNS
Porkbun DNS
Protocol HTTP/3
Email
Email forwarding Porkbun Email Forwarding

Infrastructure

Network
CLOUDFLARENET - Cloudflare, Inc., US
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Green hosted
Host runs on renewable energy. Data from The Green Web Foundation.
SSL Certificate
Google Trust Services
Valid 2 Jun 2026 to 31 Aug 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
3 months
Registered Apr 2026 · Porkbun LLC

Email Security

✓
SPF ~all Soft-fail (~all). Common and accepted.
?
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 (0)

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

Readiness Breakdown How?

⚠
Custom title and meta description (partial) missing meta description
✓ Responsive viewport meta tag
✓ Favicon present
- Open Graph tags (title, image, description)
- Canonical URL declared
- Twitter card meta tags
- Semantic HTML (nav, main, article)

Performance How?

116 ms Server response
91% Faster than peers
216 ms Largest contentful paint
0.03 Cumulative layout shift
17.7 MB Page weight
17.7 MB Image weight
0 Console errors
0 Failed requests

⚠ 9 images: 3 oversized, 9 without width/height

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

AI Stance

Blocks AI crawlers
✗ llms.txt published
✗ 9 AI bots blocked in robots.txt
Content-Signal
✗ ai-train = no
✓ search = yes
? ai-input (not 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
0 CSS files
0 Third-party domains

Brand Colours

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