Billotter

Make a professional PDF invoice in under a minute. No account, no uploads — your data never leaves your browser.

Finance

Added July 8, 2026 · Last analysed July 8, 2026 · via Hacker News · 56% unique tagline

Own this Launch?

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 8 July 2026; the live site may have changed since.

Billotter scores highly overall, with a complete set of security headers, a thorough launch checklist, and clean crawl signals. Main gaps: incomplete legal pages and no email security records.

Launched on Hacker News on July 8, 2026. The site is hosted on GitHub Pages and served through Cloudflare, with a domain registered 4 days before launch. Our crawler found 8 technologies on this site, covering CDN, DNS providers, hosting, and monetisation. The stack includes Cloudflare, Cloudflare DNS, and Fastly.

It's also on one of the most common stacks we track, shared by 1,590 launches and more locked down than the typical Hacker News launch.

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

9.0

StackScope Score

Excellent

100/100 Launch Readiness

Launch ready

6/6 Security Headers

Strong

2/3 Legal

Partial

2/2 Crawl files

Complete

100/100 Performance

Fast

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 (8)

Infrastructure

CDN	Cloudflare
CDN	Fastly
DNS	Cloudflare DNS
Hosting	GitHub Pages
Protocol	HTTP/3
Security	HSTS

Analytics & Marketing

SEO	Google Search Console

Commerce & Payments

Monetisation	Ko-fi

Infrastructure

Network

CLOUDFLARENET - Cloudflare, Inc., US

AS13335 · US

DNS

Cloudflare 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

Google Trust Services

Valid 3 Jul 2026 to 1 Oct 2026

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

Domain Age

5 days

Registered Jul 2026 · Cloudflare, Inc.

Email Security

✗

SPF Not published. Your domain can be spoofed in phishing emails.

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 (2)

Local storage (2)

Key	Size	Detected as
billotter.invoice.v1	390 B	-
billotter.invoices.v1	2 B	-

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)

⚠

Page title is 79 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 167 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?

229 ms Server response

67% Faster than peers

528 ms Largest contentful paint

0.00 Cumulative layout shift

190 KB Page weight

1 Third-party domains

0 Console errors

0 Failed requests

⚠ 2 images: 1 without width/height

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?

Signal	Points
AI onboarding signals	+5
AI palette signals	+5
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

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (26 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

✓ Terms of Service

/guides/invoice-payment-terms/

Mentions:

Security Headers (6/6)

✓

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

1 Third-party domains

Brand Colours

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