Open Notebook

Build a private AI notebook from files, links, and notes. Ask grounded questions, save cited answers, and draft podcast-style briefings with local or cloud models.

Productivity

Added April 27, 2026 · Last analysed April 27, 2026 · via

Own this Launch?

StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 27 April 2026; the live site may have changed since.

Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.

Open Notebook scores highly overall, with complete legal pages, a thorough launch checklist, and fast page loads. Visible gaps: missing several security headers and no email security records.

Launched on Product Hunt on April 27, 2026. The site is served through Cloudflare. We've detected 6 technologies on this site, covering CDN, developer tools, DNS providers, and protocol. The stack includes Cloudflare, Cloudflare DNS, and Google Search Console.

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

8.3

StackScope Score

Excellent

90/100 Launch Readiness

Launch ready

3/6 Security Headers

Decent

3/3 Legal

Complete

2/2 Crawl files

Complete

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 (6)

Infrastructure

CDN	Cloudflare (3)
DNS	Cloudflare DNS
Protocol	HTTP/3 (2)
Security	HSTS (2)

Build & Framework

Developer tools	Vite

Analytics & Marketing

SEO	Google Search Console

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 27 Apr 2026 to 26 Jul 2026

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

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 (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) (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 77 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 163 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.

AI Stance

Blocks AI crawlers

✗ llms.txt published

✗ 9 AI bots blocked in robots.txt

Content-Signal

✗ ai-train = no

✓ search = yes

? ai-input (not declared)

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (11 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

/open-notebook-vs-notebooklm

✓ Terms of Service

/terms

62% unique

Security Headers (3/6)

✓

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)

Performance

110ms response time

Faster than 81% of sites

1 third-party domains loaded

Build

1 JS files

1 CSS files

1 Third-party domains

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.