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Librost

Organize, search, and access your personal book collection in one place. Librost supports EPUB, PDF, audiobooks, and more with powerful search and beautiful covers.

librost.com · Added June 10, 2026 · Last analysed June 10, 2026 · via PeerPush · 67% 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 10 June 2026; the live site may have changed since.

Librost looks production-ready overall, with complete legal pages, a thorough launch checklist, and well-configured email security. Worth fixing first: missing several security headers, no sitemap, and analytics without a consent banner.

Launched on PeerPush on June 10, 2026. The site is hosted on Cloudflare in the United States, with a domain registered 5 months before launch. We've detected 12 technologies on this site, covering CDN, advertising, analytics, and cloud. The stack includes Astro, Amazon Web Services, and AWS CloudFront.

It's on a stack we've seen on only 8 launches.

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

Vibe Score 5 · Few AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (12) · Scale-up stack

Infrastructure
CDN AWS CloudFront
Cloudflare
Cloud Amazon Web Services
DNS Cloudflare DNS
Hosting AWS S3
Protocol HTTP/3
Email
Business email Purelymail (3)
Build & Framework
Meta-framework Astro
Analytics & Marketing
Advertising Facebook Pixel (2)
Analytics PostHog (3)
SEO Google Search Console
Other
Directory TinyLaunch

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Google Trust Services
Valid 17 Apr 2026 to 16 Jul 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
5 months
Registered Dec 2025 · 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=reject Reject (strict). Strong.
?
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 (8)

Cookies (2)
NameLifetimeDetected as
ph_phc_z6WcVj3hiM3huuHen76HBttBtoHpkxDU7FVz6X3HwmZt_posthog 12mo PostHog
_fbp 2mo Facebook Pixel
Local storage (3)
KeySizeDetected as
lastExternalReferrer 5 B -
lastExternalReferrerTime 13 B -
ph_phc_z6WcVj3hiM3huuHen76HBttBtoHpkxDU7FVz6X3HwmZt_posthog 1 KB PostHog
Session storage (3)
KeySizeDetected as
ph_phc_z6WcVj3hiM3huuHen76HBttBtoHpkxDU7FVz6X3HwmZt_posthog 90 B PostHog
ph_phc_z6WcVj3hiM3huuHen76HBttBtoHpkxDU7FVz6X3HwmZt_primary_window_exists 4 B PostHog
ph_phc_z6WcVj3hiM3huuHen76HBttBtoHpkxDU7FVz6X3HwmZt_window_id 38 B PostHog

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)
Meta description is 164 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?

565 ms Server response
31% Faster than peers
1728 ms Largest contentful paint
0.00 Cumulative layout shift
389 KB Page weight
154 KB Image weight
5 Third-party domains
0 Console errors
0 Failed requests

7 images: 6 oversized, 7 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?

SignalPoints
AI copy 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

sitemap.xml
security.txt
llms.txt
ads.txt
humans.txt
? Consent manager not detected
Analytics detected; tracking fires without visitor opt-in.
92% unique

Security Headers (0/6)

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

Build

HTML minified
CSS minified
JS minified
Code splitting
6 JS files
2 CSS files
5 Third-party domains

Brand Colours

App Manifest

Librost
display: standalone 2 icons
theme #ffffff
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.