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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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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.

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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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grubstreet.com

https://grubstreet.com· First analyzed 23 Apr 2026· Updated 23 Apr 2026

Export

grubstreet.com

Mobile

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

199.232.193.246

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

Fastly

Nameservers

ns-1830.awsdns-36.co.uk.ns-54.awsdns-06.com.ns-605.awsdns-11.net.ns-1216.awsdns-24.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

467 ms10%

Speed Index

607 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

679 KB

79 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

BigCommerce

Technology Stack

12 Technologies Detected

Analytics

Google Analytics

Sentry FullStory

Advertising

Google Ads Google AdSense Snapchat Pixel

CSS Frameworks

Tag Managers

Customer Support

Payments

Security

SEO Analysis

B70/100

Meta Tags15/15

Content3/12

Headings8/8

Technical21/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile3/4

Indexability3/3

grubstreet.comgrubstreet.com

Grub Street -- New York Magazine's Food and Restaurant Blog

Grub Street is a food blog by New York Magazine with restaurant reviews, chef interviews, restaurant-openings news, and food-trend coverage.

Title Length59 chars

Recommended: 50-60 chars (~367px / 580px)

Description Length140 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (49 words). Search engines need substantial content for ranking.
• Most images missing alt text (51/53) — critical for accessibility and SEO

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

21 URLs

21 sub-sitemaps

robots.txt

65 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

15/100

Poor

4 12 1

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

Sponsored

AI & LLM Readiness

D40/100

Bot Access

15/25

Machine Read.

7/25

Schema Data

10/25

Citation

8/25

AI Bot Access

8/14 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:1%

Words:1,728

Token eff.:Optimal

Structured Data

2 JSON-LD

Person×1.3Organization×1.1WebSiteSearchAction

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

83/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

Semantic Structure

18/20

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

7/15

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

ARIA & Roles

10/15

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

1 recommendation

•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.

75/100

69 mg

CO₂e / view

678.8 KB

Page Weight

80%

Cleaner Than

New Visitor

78 mg

Returning (cached)

39 mg

Annual (10K/mo)

8.2 kg

Emission Segments

Data Center

3 mg

Network

20 mg

Device

45 mg

Resource Breakdown

JavaScript

346.3 KB

HTML

309.1 KB

Other

23.4 KB

Green Hosting Verified

Fastly, Inc.

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

82d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

16.04.2026

Valid Until

15.07.2026

Subject Alternative Names (2)

*.grubstreet.comgrubstreet.com

SHA-256 Fingerprint

1C:01:80:E6:01:6C:E5:D0:63:38:A2:FE:1A:45:78:DB:21:41:49:F5...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

1164

alt-svc

h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...

content-encoding

⚡ Brotli(br)

content-length

316179

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt3.aspmx.l.google.com

alt4.aspmx.l.google.com

aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

grubstreet.com

Domain Age

28y 6m

Created

29.10.1997

Expires

28.10.2026

Last Updated

23.09.2025

Registrar

Amazon Registrar, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

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.

77/100

Mobile Friendly93 breakpoints

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,shrink-to-fit=no

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Times New Roman + Helvetica

WCAG Partial

54/100

Readability

/30

15/30

10px · LH 1.50

Hierarchy

/20

20/20

3.2x ratio · ✓ H1→H6

WCAG

/25

14/25

1.85:1 min contrast

Performance

/25

5/25

4 fonts · 7 req

Heading Font

Times New Roman

Serif32px

Body Font

Helvetica

Sans10px

Contrast Ratio

1.85:1

1 issue

Reading Comfort

Serif Headlines + Sans Body

left aligned

32px

41px

18px

10px

❌ Critical: 10px body text is too small. Minimum 14px, recommend 16px+.

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

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.9:1).

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

✅ Strong hierarchy: Headlines are 3.2x larger than body text.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 59

Color Palette

8 unique colors

18.11:1 AAA Light

#ffffff

Background· 75.9%

#151618

Text· 7.1%

#b99281

Primary· 3.3%

#76564e

Secondary· 3.3%

#7b1e17

Accent· 2.2%

#ebe2dc

Secondary· 2.1%

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagservices.com(2)pagead2.googlesyndication.com(2)sb.scorecardresearch.com(1)googletagmanager.com(1)gstatic.com(1)

Website Identity

Grub Street

NewsMediaOrganization

Grub Street is the digital destination for New York’s authoritative, award-winning food and restaurant coverage. Through investigative reports, up-to-the-minute trendspotting, meticulously researched guides, and the weekly “Grub Street Diet,” Grub Street squints at the food world through an ever-evo

www.grubstreet.com

28 years old

Location detected: 🇨🇦 Canadavia ip

Amazon Registrar, Inc.📧 Google WorkspaceenEst. 2006

Sponsored

Last analyzed: 23 Apr 2026 at 17:29

Historical Analysis & Change Tracking