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Penora

Penora is the AI study workspace that plugs into Google Classroom — it reads your assignments and drafts review-ready documents, notes, and slides, with real math, code, and charts. You review, edit, and submit. Free for students.

Education

penora.us · Added June 20, 2026 · Last analysed June 20, 2026 · via · 50% 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 20 June 2026; the live site may have changed since.

Penora scores well across the board, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Visible gaps: incomplete email security.

Launched on Product Hunt on June 20, 2026. The site is hosted on Cloudflare in the United States. Our crawler found 15 technologies on this site, covering CDN, auth, baas, and CSS frameworks. The stack includes Google Sign-In, Tailwind CSS, and Cloudflare.

Notably, it's on one of the most common stacks we track, shared by 4,539 launches and more locked down than the typical Product Hunt launch.

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

10.0
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3 Legal
Complete
2/2 Web Standards
Complete
Vibe Score 28 · Some AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (15)

Infrastructure
CDN Cloudflare
Fastly
DNS Cloudflare DNS
Protocol HTTP/3
Security HSTS
Email
Email forwarding Cloudflare Email Routing (2)
Build & Framework
Auth Google Sign-In
BaaS Supabase
CSS framework Tailwind CSS
Developer tools Vite
Font Google Fonts
UI library shadcn/ui
Analytics & Marketing
SEO Google Search Console
Commerce & Payments
Payments Paddle
Business Tools
Productivity Google Docs

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 15 May 2026 to 13 Aug 2026
Certificate as captured in this snapshot, not a live check.

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
Open Graph tags (title, image, description)
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
Meta description is 230 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

360 ms Server response
50% Faster than peers
700 ms Largest contentful paint
0.00 Cumulative layout shift
428 KB Page weight
3 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.

Vibe Score Breakdown How?

SignalPoints
AI copy signals +5
AI onboarding signals +5
AI palette signals +5
AI writing signals +5
AI iconography signals +3
AI layout 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

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

Well-Known Files

sitemap.xml (6 URLs)
llms.txt
ads.txt
humans.txt
90% unique

Security Headers (6/6)

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

Build

1 JS files
4 CSS files
3 Third-party domains

Brand Colours

App Manifest

display: standalone 2 icons
theme #ffffff
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.