Screen Ruler

Chrome extension to inspect elements, measure pixel distances, extract colors and assets, view computed CSS, and validate designs. Used by 50,000+ developers and designers.

www.screen-ruler.com · Added June 19, 2026 · Last analysed June 19, 2026 · via · 67% 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 19 June 2026; the live site may have changed since.

Screen Ruler is largely in shape, with complete legal pages, a thorough launch checklist, and clean crawl signals. Worth fixing first: missing several security headers and incomplete email security.

Launched on Product Hunt on June 19, 2026. The site is hosted on Fastly in the United States, with a domain registered in 2025. The crawl picked up 6 technologies on this site, covering CDN, DNS providers, transactional email, and web fonts. The stack includes Fastly, GitHub Pages, and Google Domains DNS.

For context, it's running the same core stack as 1,157 other launches.

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

7.6

StackScope Score

Good

100/100 Launch Readiness

Launch ready

1/6 Security Headers

Poor

3/3 Legal

Complete

2/2 Web Standards

Complete

100/100 Performance

Fast

Vibe Score 13 · Few AI signals

Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (6)

Infrastructure

CDN	Fastly
DNS	Google Domains DNS
Hosting	GitHub Pages
Security	HSTS

Transactional email	Resend

Build & Framework

Font	Google Fonts

Infrastructure

Network

FASTLY - Fastly, Inc., US

AS54113 · US

DNS

Google Domains DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Let's Encrypt

Valid 18 May 2026 to 16 Aug 2026

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

Domain Age

1 year

Registered Mar 2025 · Squarespace Domains LLC

Email Security

✗

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

✓

DKIM Detected via known email provider

✗

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

✓ 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 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 172 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?

390 ms Server response

47% Faster than peers

620 ms Largest contentful paint

0.04 Cumulative layout shift

512 KB Page weight

81 KB Image weight

4 Third-party domains

0 Console errors

0 Failed requests

⚠ 17 images: 3 oversized, 17 without width/height, 5 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.

Vibe Score Breakdown How?

Signal	Points
AI palette signals	+5
AI writing signals	+3
AI layout 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

Welcomes AI crawlers

✓ 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 (17 URLs)

✗ security.txt

✓ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

✓ Terms of Service

90% unique

Mentions:

Updated: January 17, 2026

Security Headers (1/6)

✗

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

3 JS files

7 CSS files

4 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.