← Back to browse

RubricMark

Start free. Build worksheets and rubrics, batch-mark essays and scans, sync with Google Classroom (rosters, submissions, publish, rubrics, grades), then turn marks into report-card comments and follow-up practice. You sign off on every score.

rubricmark.com · Added June 9, 2026 · Last analysed June 9, 2026 · via · 67% 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 9 June 2026; the live site may have changed since.

RubricMark ships with the launch fundamentals in place, with complete legal pages, a thorough launch checklist, and clean crawl signals. Worth fixing first: no Content-Security-Policy and incomplete email security.

Launched on Product Hunt on June 9, 2026. The site is hosted on Google LLC in the United States, with a domain registered 3 weeks before launch. We've detected 13 technologies on this site, covering advertising, analytics, baas, and build tooling. The stack includes Google, Tailwind CSS, and Vite.

It's running the same core stack as 255 other launches and tighter on security headers than most Product Hunt launches.

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

9.5
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3 Legal
Complete
2/2 Web Standards
Complete
Vibe Score 30 · Some AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (13)

Infrastructure
DNS Namecheap DNS
Hosting Google Cloud
Security HSTS
Email
Business email Google Workspace (2)
Build & Framework
BaaS Firebase (3)
Build tool Vite
CSS framework Tailwind CSS
Font Google Fonts
Analytics & Marketing
Advertising Google Ads
Analytics Google Analytics
Consent Google
SEO Google Search Console
Tag management Google Tag Manager (3)

Infrastructure

Network
AS15169 · US
DNS
Namecheap DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Google Trust Services
Valid 17 May 2026 to 15 Aug 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
24 days
Registered May 2026 · NameCheap, Inc.

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
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 (8)

Local storage (2)
KeySizeDetected as
rubricmark.app.buildId 7 B -
rubricmark.deviceId.v1 43 B -
Session storage (5)
KeySizeDetected as
homeAudience 8 B -
rubmark-hero-variant 1 B -
rubmark.eea_detected 1 B -
rubmark.google_ads_attribution 407 B -
rubmark.marketing_tags_blocked 1 B -
IndexedDB (1)
DatabaseVersionDetected as
firebase-heartbeat-database 1 Firebase

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 242 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?

163 ms Server response
78% Faster than peers
2032 ms Largest contentful paint
0.15 Cumulative layout shift
3.8 MB Page weight
1.9 MB Image weight
6 Third-party domains
0 Console errors
0 Failed requests

4 images: 3 oversized, 3 missing alt text

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 CSS signals +15
AI palette signals +5
AI writing signals +5
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

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

Well-Known Files

sitemap.xml (40 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Consent manager: Google
92% unique

Security Headers (5/6)

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

Build

HTML minified
CSS minified
JS minified
Code splitting
4 JS files
7 CSS files
6 Third-party domains

Brand Colours

App Manifest

RubricMark
display: standalone 3 icons
theme #fdcb45
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.