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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.

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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.

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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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toutiao.com

https://toutiao.com· First analyzed 11 Feb 2026· Updated 23 Mar 2026

Export

toutiao.com

Mobile

Sponsored

Hosting Provider

BeiJing Teamsun Technology Co.

IP Address

122.14.229.38

Server Location

🇨🇳 Beijing, China

ASN

AS9808

Organization

BeiJing Teamsun Technology Co.

Server

volc-dcdn

Nameservers

vip4.alidns.com.vip3.alidns.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

37.9 s10%

Speed Index

49.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.7 MB

37 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

BeiJing Teamsun Technology Co.

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

1 Technologies Detected

Analytics

Google Analytics

SEO Analysis

F27/100

Meta Tags0/15

Content0/12

Headings0/8

Technical15/25

E-E-A-T0/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

toutiao.comtoutiao.com

No Title Found

No description available for this page.

Title Length0 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• Missing page title — critical for SEO rankings and SERP display
• Missing meta description — important for click-through rates in SERPs
• Very thin content (0 words). Search engines need substantial content for ranking.

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

20 URLs

20 sub-sitemaps

robots.txt

19 rules

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F23/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

0/25

Citation

2/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:0%

Words:0

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

63/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

3/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

61/100

A+

27 mg

CO₂e / view

220.5 KB

Page Weight

95%

Cleaner Than

New Visitor

31 mg

Returning (cached)

16 mg

Annual (10K/mo)

3.3 kg

Emission Segments

Data Center

6 mg

Network

7 mg

Device

15 mg

Resource Breakdown

JavaScript

157.7 KB

HTML

4.2 KB

Other

58.6 KB

Green Hosting Not Verified

BeiJing Teamsun Technology Co.

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

86%Very Good

Static / Informational

HTTPS

No WAF

301d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

19.01.2026

Valid Until

18.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.toutiao.comtoutiao.com

SHA-256 Fingerprint

F9:D8:73:67:3E:64:C9:10:70:D5:68:D6:54:F8:A2:E0:EF:A5:3B:CB...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-security-policy

script-src 'unsafe-eval' 'wasm-unsafe-eval' 'report-sample' ...

content-security-policy-report-only

script-src 'unsafe-eval' 'wasm-unsafe-eval' 'report-sample' ...

content-type

text/html; charset=utf-8

date

Mon, 23 Mar 2026 13:53:06 GMT

reporting-endpoints

main-endpoint="https://mon.zijieapi.com/monitor_browser/coll...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (3)

mx1.bytedance.com

mx3.bytedance.com

mx2.bytedance.com

Domain Information

toutiao.com

Domain Age

22y 1m

Created

16.02.2004

Expires

16.02.2027

Last Updated

18.05.2022

Registrar

eName Technology Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

49/100

Not Mobile Friendly

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1,user-scalable=no,minimal-ui

4 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

71/100

Readability

/30

24/30

16px · LH 1.50

Hierarchy

/20

11/20

1x ratio · ✓ H1→H6

WCAG

/25

16/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

-apple-system

Sans16px

Body Font

-apple-system

Sans16px

Contrast Ratio

1:1

25 issues

Reading Comfort

Single Font Family

left aligned

16px

Minor Second

Scale

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 25 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Color Palette

5 unique colors

15.91:1 AAA Light

#ffffff

Background· 50.1%

#222222

Text· 36.4%

Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

lf3-short.ibytedapm.com(1)lf3-cdn-tos.bytescm.com(1)

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Last analyzed: 23 Mar 2026 at 13:54

AI-Powered Analysis

Technical Deep Dive

Technology Analysis for toutiao.com

StackOptic has analyzed this website's technology stack. View the detailed breakdown in the sections above.

Analysis by StackOptic AIMar 23, 2026

AI-Powered Insights

Historical Analysis & Change Tracking