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.

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aliyundrive.com

https://aliyundrive.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

aliyundrive.com

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

123.56.218.176

Server Location

🇨🇳 Beijing, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Server

Envoy

Nameservers

ns1.alibabadns.com.ns2.alibabadns.com.

Performance

Page Speed

113 KB

26 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

🖥️ CSR

Infrastructure

Hosting

Alibaba Cloud

SEO Analysis

F23/100

aliyundrive.comaliyundrive.com

阿里云盘 - 备份无忧整理有序·阿里巴巴集团出品

阿里云盘是一款速度快、不打扰、够安全、易于分享的个人网盘，欢迎你来体验。

Title Length25 chars

Recommended: 50-60 chars

Description Length36 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

11 rules

Sponsored

A+

Security Score

91%Excellent

Static / Informational

HTTPS

No WAF

53d

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

12.03.2025

Valid Until

13.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

*.alipan.com*.aliyundrive.comaliyundrive.comalipan.com

SHA-256 Fingerprint

CC:B4:B1:5A:4B:5E:DE:03:23:12:4F:BE:21:1E:C9:21:7A:F9:A0:0A...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(private, no-cache, max-age=0, s-max-age=0, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-length

1740

content-type

text/html; charset=utf-8

date

Wed, 18 Feb 2026 08:00:55 GMT

etag

"CD4928C29AA58192956C6B68A2B1459D"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

Domain Information

aliyundrive.com

Domain Age

6y 3m

Created

08.11.2019

Expires

08.11.2026

Last Updated

25.09.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

Avenir

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

Avenir

Body Font

Avenir

Sans16px

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

Sponsored

Scripts & Styles

15 Resources

Scripts

Styles

Async

Defer

Top Script Sources

g.alicdn.com(11)log.mmstat.com(1)fourier.taobao.com(1)retcode.alicdn.com(1)

Sponsored

Last analyzed: 18 Feb 2026 at 08:01

Historical Analysis & Change Tracking

aliyundrive.com

阿里云盘 - 备份无忧 整理有序·阿里巴巴集团出品

阿里云盘 - 备份无忧整理有序·阿里巴巴集团出品