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

doubao.com

https://doubao.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

doubao.com

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

163.181.58.171

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS24429

Organization

Alibaba.com LLC

Server

volc-dcdn

Performance

Page Speed

71 KB

7 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

4 Technologies Detected

Other

D3.js

Other

Lottie

Runtime

Node.js

Languages

SEO Analysis

F17/100

doubao.comdoubao.com

No Title Found

Seedance 2.0 视频生成模型现已全面接入豆包，现在登录即可免费使用！豆包是你的 AI 聊天智能对话问答助手，写作文案翻译编程工具。豆包为你答疑解惑，提供灵感，辅助创作，也可以和你畅聊任何你感兴趣的话题

Title Length0 chars

Recommended: 50-60 chars

Description Length106 chars

Recommended: 120-160 chars

Issues (3)

• Missing page title - critical for SEO
• Missing H1 tag - every page should have one H1
• Many images missing alt text (1/1)

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

7 rules

Sponsored

Security Score

56%Poor

Interactive

HTTPS

No WAF

335d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

19.01.2026

Valid Until

18.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.doubao.comdoubao.com

SHA-256 Fingerprint

69:52:2B:4C:47:C8:8F:13:4C:E8:EA:75:DC:81:C3:91:4C:81:EB:DA...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

content-encoding

⚡ Brotli(br)

content-security-policy

report-to slardar-endpoint; upgrade-insecure-requests ; repo...

content-security-policy-report-only

report-to slardar-endpoint; upgrade-insecure-requests ; fram...

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 13:28:01 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

doubao.com

Domain Age

20 years

Created

10.02.2006

Expires

10.02.2027

Last Updated

15.09.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

Times New Roman

66/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

Single Family

left aligned

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

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

lf-flow-web-cdn.doubao.com(4)lf3-short.ibytedapm.com(1)

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Last analyzed: 17 Feb 2026 at 13:28

Historical Analysis & Change Tracking