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

so.com

https://so.com· First analyzed 11 Feb 2026· Updated 11 Feb 2026

Export

so.com

Mobile

Sponsored

Hosting Provider

QiHU 360 Inc.

IP Address

104.192.110.226

Server Location

🇺🇸 Los Angeles, United States

ASN

AS55992

Organization

QiHU 360 Inc.

Server

OpenResty

Performance

Page Speed

704 KB

69 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Vue.js

Infrastructure

Hosting

QiHU 360 Inc.

Technology Stack

4 Technologies Detected

Frameworks

Libraries

CSS Frameworks

Web Servers

SEO Analysis

F23/100

so.comso.com

360搜索，SO靠谱

360搜索是安全、精准、可信赖的新一代搜索引擎，依托于360母品牌的安全优势，全面拦截各类钓鱼欺诈等恶意网站，提供更放心的搜索服务。 360搜索 so靠谱。

Title Length10 chars

Recommended: 50-60 chars

Description Length78 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (24/30)
• Missing viewport meta tag - page may not be mobile-friendly

9 issues found

Upgrade to view details

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

229d

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

connection

keep-alive

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Wed, 11 Feb 2026 01:05:58 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Typography & Readability

arial

58/100

Readability

/30

20/40

13px · LH 1.54

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

arial

Body Font

arial

Sans13px

Contrast Ratio

Reading Comfort

Single Family

left aligned

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.54 ratio ensures comfortable reading.

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

⚠️ Cramped layout: 27 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ss4.360tres.com(1)ss.360tres.com(1)ss1.360tres.com(1)ss2.360tres.com(1)ss3.360tres.com(1)

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Last analyzed: 11 Feb 2026 at 01:07

Historical Analysis & Change Tracking