Thederf

Show HN: UApp | self-modifying, single-file apps to replace Excel workflows

Productivity

Added August 24, 2026 · Last analysed August 24, 2026 · via Hacker News

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

Thederf is missing several launch fundamentals. Visible gaps: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on August 24, 2026. The site is served through Cloudflare, with a domain registered in 2019. Our crawler found 4 technologies on this site, covering CDN, DNS providers, business email, and email forwarding. The stack includes Cloudflare, Cloudflare DNS, and Cloudflare Email Routing.

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

1.5

StackScope Score

Poor

52/100 Launch Readiness

Partially ready

0/6 Security Headers

Poor

0/3 Legal

Missing

0/2 Crawl files

Missing

100/100 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 (4)

Infrastructure

CDN	Cloudflare
DNS	Cloudflare DNS

Business email	Google Workspace
Email forwarding	Cloudflare Email Routing (2)

Infrastructure

Network

CLOUDFLARENET - Cloudflare, Inc., US

AS13335 · US

DNS

Cloudflare DNS

Authoritative nameserver

DNSSEC

Enabled

DNSKEY records published. DNS responses signed.

Green hosting

Green hosted

Host runs on renewable energy. Data from The Green Web Foundation.

SSL Certificate

Google Trust Services

Valid 12 Jul 2026 to 10 Oct 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

7.5 years

Registered Feb 2019 · Cloudflare, 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 p=none None (p=none). Monitoring only.

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

✓ Semantic HTML (nav, main, article)

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

Performance How?

365 ms Server response

43% Faster than peers

734 ms Largest contentful paint

0.00 Cumulative layout shift

35 KB Page weight

10 KB Image weight

0 Console errors

0 Failed requests

⚠ 1 images: 1 oversized, 1 without width/height, 1 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.

AI Stance

No AI stance declared

✗ llms.txt published

✓ No AI bots blocked in robots.txt

Content-Signal

? No directive 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

2 JS files

1 CSS files

0 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.