What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Back to Search

blogspot.tw

https://blogspot.tw· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

blogspot.tw

Mobile

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

216.58.210.137

Server Location

🇺🇸 Mountain View, United States

ASN

AS15169

Organization

Google LLC

Server

Google Web Server

Nameservers

ns4.google.com.ns2.google.com.ns1.google.com.ns3.google.com.

Performance

Page Speed

927 KB

42 requests

Image Optimization

WebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Google Cloud Platform

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Fonts

Google Fonts

Customer Support

Zendesk

SEO Analysis

F23/100

blogspot.twblogspot.tw

Google

No description available for this page.

Title Length6 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description - important for click-through rates
• Many images missing alt text (13/16)
• Missing viewport meta tag - page may not be mobile-friendly

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

247 rules

Sitemap reference found

Sponsored

Security Score

34%Critical

Interactive

HTTPS

No WAF

52d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

19.01.2026

Valid Until

13.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.google.com

SHA-256 Fingerprint

63:86:A6:69:FF:ED:40:2B:88:13:6E:3E:4F:01:08:AB:8D:96:19:72...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ch

Sec-CH-Prefers-Color-Scheme

alt-svc

h3=":443"; ma=2592000,h3-29=":443"; ma=2592000

cache-control

🟡 0s(private, max-age=0)

content-encoding

⚡ Brotli(br)

content-security-policy-report-only

object-src 'none';base-uri 'self';script-src 'nonce-Vavu0KlO...

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

Domain Information

blogspot.tw

Domain Age

15 years

Created

09.02.2011

Expires

09.02.2027

Last Updated

08.01.2026

Registrar

Markmonitor, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Arial

70/100

Readability

/30

22/40

14px · LH --

Hierarchy

/20

18/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Sans28px

Body Font

Arial

Sans14px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

28px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)gstatic.com(1)

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Last analyzed: 20 Feb 2026 at 02:22

Historical Analysis & Change Tracking