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

douyu.com

https://douyu.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

douyu.com

Sponsored

Hosting Provider

Meteverse Limited

IP Address

138.113.181.188

Server Location

🇸🇪 Stockholm, Sweden

ASN

AS54994

Server

wswaf

Performance

Page Speed

991 KB

174 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Infrastructure

Hosting

Meteverse Limited

Technology Stack

2 Technologies Detected

Meta Frameworks

Next.js

CSS Frameworks

Tailwind CSS

SEO Analysis

C67/100

douyu.comdouyu.com

斗鱼 - 看见每种热爱

斗鱼 - 看见每种热爱提供高清、快捷、流畅的视频直播和游戏赛事直播服务，包含英雄联盟lol直播、穿越火线cf直播、dota2直播、美女直播等各类热门游戏赛事直播和各种名家大神游戏直播，内容丰富，推送及时，带给你不一样的视听体验，一切尽在斗鱼 - 每个人的直播平台。

Title Length11 chars

Recommended: 50-60 chars

Description Length133 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (185/238)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

17 URLs

robots.txt

6 rules

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

185d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

23.07.2025

Valid Until

24.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.douyu.comdouyu.com

SHA-256 Fingerprint

AD:A9:F9:92:66:42:16:D2:C8:AA:2D:77:9E:97:C9:52:E0:EF:AA:AC...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

c-via

100

content-encoding

📦 Gzip(gzip)

content-md5

iCKKFa5aMChhP/hZL/FhyA==

content-type

text/html; charset=utf-8

date

Thu, 19 Feb 2026 11:01:02 GMT

etag

W/"88228A15AE5A3028613FF8592FF161C8"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

douyu.com

Domain Age

24y 2m

Created

13.12.2001

Expires

13.12.2032

Last Updated

03.08.2025

Registrar

Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)

DNSSEC

Not Enabled

Typography & Readability

-apple-system

58/100

Readability

/30

20/40

12px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

-apple-system

Sans

Body Font

-apple-system

Sans12px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

22px

14px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ 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.

✅ Protected text on images: Using gradient for readability.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

shark2.douyucdn.cn(20)

Sponsored

Last analyzed: 19 Feb 2026 at 11:01

Historical Analysis & Change Tracking