← Back to browse

Canispreadsheet

600 spreadsheet functions checked for real compatibility across Excel, Google Sheets, and LibreOffice Calc. 55 quirks found from 834 executed, recalculation-proven test cases.

Developer Tools

Added August 26, 2026 · Last analysed August 26, 2026 · via Hacker News

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

Canispreadsheet looks production-ready overall, with a thorough launch checklist and clean crawl signals. What needs work: missing several security headers, incomplete legal pages, and incomplete email security.

Launched on Hacker News on August 26, 2026. The site is hosted on GitHub Pages and served through Fastly, with a domain registered 7 weeks before launch. We've detected 6 technologies on this site, covering CDN, DNS providers, business email, and email forwarding. The stack includes Fastly, GitHub Pages, and HSTS.

It's running the same core stack as 2,493 other launches.

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

Vibe Score 5 · 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 (6)

Infrastructure
CDN Fastly
DNS Namecheap DNS
Hosting GitHub Pages
Security HSTS
Email
Business email PrivateEmail
Email forwarding Namecheap Email Forwarding (2)

Infrastructure

Network
AS54113 · US
DNS
Namecheap DNS
Authoritative nameserver
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 5 Jul 2026 to 3 Oct 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
1 month
Registered Jul 2026 · NameCheap, Inc.

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
Semantic HTML (nav, main, article)
Page title is 81 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.
Meta description is 175 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.
- Favicon present

Performance How?

159 ms Server response
70% Faster than peers
2360 ms Largest contentful paint
0.00 Cumulative layout shift
17 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.

Vibe Score Breakdown How?

SignalPoints
AI writing 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 (637 URLs)
security.txt
llms.txt
ads.txt
humans.txt
? Privacy Policy not detected
Terms of Service
/how-to/if-with-multiple-conditions.html

Security Headers (1/6)

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

Build

0 JS files
0 CSS files
1 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.