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SheetGuard

Revolutionary AI detects errors, suggests fixes, and prevents costly mistakes in your spreadsheets.

Productivity

Added June 29, 2026 · Last analysed June 29, 2026 · via · 71% 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 29 June 2026; the live site may have changed since.

SheetGuard is largely in shape, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Main gaps: no robots.txt or sitemap and incomplete email security.

Launched on Product Hunt on June 29, 2026. The site is served through Cloudflare. The crawl picked up 18 technologies on this site, covering security, analytics, auth, and captcha. The stack includes Clerk, Next.js, and React.

For context, it's on one of the most common stacks we track, shared by 3,102 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 →

Vibe Score 15 · 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 (18)

Infrastructure
CDN Cloudflare
DNS Namecheap DNS
Security Cloudflare Bot Management
HSTS
Server nginx
Email
Email forwarding Namecheap Email Forwarding (2)
Build & Framework
Auth Clerk (5)
Captcha Cloudflare Turnstile
CSS framework Tailwind CSS
Font Google Fonts
Framework React
JavaScript library Motion
Meta-framework Next.js (4)
UI library Lucide Icons
Analytics & Marketing
Analytics Google Analytics (3)
Social Gravatar
Tag management Google Tag Manager medium
Commerce & Payments
Payments Stripe

Infrastructure

Network
AS24940 · DE
DNS
Namecheap 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
Let's Encrypt
Valid 6 Jun 2026 to 4 Sep 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 (7)

Cookies (5)
NameLifetimeDetected as
_cfuvid session Cloudflare
__cf_bm < 1h Cloudflare
__client 1y Clerk
__client_uat 1y -
__client_uat_iXVR49my 1y -
Local storage (2)
KeySizeDetected as
SheetGuard-theme 5 B -
__clerk_environment 6.3 KB Clerk

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description) (partial) missing og:image
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
Page title is 83 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

Performance How?

199 ms Server response
72% Faster than peers
1888 ms Largest contentful paint
0.00 Cumulative layout shift
535 KB Page weight
4 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 palette 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

robots.txt
sitemap.xml
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy-policy
Terms of Service
/terms
? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).
88% unique

Security Headers (6/6)

Permissions-Policy experimental (check browser support)
Content-Security-Policy ⚠ CSP violation detected: your policy is blocking 2 of your own resources
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

Code splitting
9 JS files
2 CSS files
4 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.