CourseSpeed

Control video speed on Udemy, Coursera, LinkedIn Learning & more. Track your learning efficiency with AI notes & built-in analytics. Science-backed. Free 7-day trial.

Estimated origin: China

Added July 28, 2026 · Last analysed July 28, 2026 · via · 60% 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 28 July 2026; the live site may have changed since.

CourseSpeed is early-stage. Worth fixing first: missing several security headers, incomplete legal pages, and no robots.txt.

Launched on Product Hunt on July 28, 2026. The site is hosted on Alibaba (US) Technology Co. in Singapore, with a domain registered 3 weeks before launch. We've detected 6 technologies on this site, covering CSS frameworks, DNS providers, business email, and web fonts. The stack includes Tailwind CSS, Google Fonts, and nginx.

It's running the same core stack as 6,354 other launches.

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

3.7

StackScope Score

Poor

52/100 Launch Readiness

Partially ready

0/6 Security Headers

Poor

2/3 Legal

Partial

1/2 Crawl files

Partial

93/100 Performance

Fast

Vibe Score 40 · Some 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

DNS	Porkbun DNS
OS	Ubuntu
Server	nginx

Business email	QQ Mail

Build & Framework

CSS framework	Tailwind CSS (3)
Font	Google Fonts

Infrastructure

Network

ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN

AS45102 · SG

DNS

Porkbun 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 6 Jul 2026 to 4 Oct 2026

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

Domain Age

27 days

Registered Jul 2026 · Porkbun LLC

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

✓ Responsive viewport meta tag

✓ Semantic HTML (nav, main, article)

⚠

Page title is 75 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 166 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.

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

- Favicon present

Performance How?

1237 ms Server response

8% Faster than peers

1540 ms Largest contentful paint

0.07 Cumulative layout shift

921 KB Page weight

2 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?

Signal	Points
AI copy signals	+5
AI writing signals	+5
AI code-structure signals	+10

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 (9 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

/privacy

? Terms of Service not detected

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

1 JS files

1 CSS files

2 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.