burger21.com

https://burger21.com· First analyzed 03 Jun 2026· Updated 03 Jun 2026

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burger21.com

Mobile

Sponsored

Hosting Provider

Sucuri

IP Address

192.124.249.112

Site Location

🇺🇸 Tampa, United Statesvia schema_nap

Server Location

🇺🇸 Menifee, United States

ASN

AS30148

Organization

Sucuri

Server

Sucuri/Cloudproxy

CDN

Sucuri

WAF

Sucuri

Nameservers

ns19.domaincontrol.com.ns20.domaincontrol.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

912 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

11.3 MB

89 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.8.5

Infrastructure

Hosting

Sucuri

CDN

Sucuri

Technology Stack

17 Technologies Detected

Plugins

Contact Form 7

Wp Paginate The Events Calendar Page Links To

Analytics

Libraries

CSS Frameworks

UI Components

Icon Libraries

Fonts

Tag Managers

Security

SEO Analysis

C67/100

Meta Tags7/15

Content8/12

Headings6/8

Technical24/25

E-E-A-T2/7

Images1/7

Links2/5

URL5/5

Social4/5

Freshness2/4

Mobile3/4

Indexability3/3

burger21.comburger21.com

Home | Burger 21

When we started Burger 21 in 2009, we wanted to share our love for truly fresh, hand-crafted, highest-quality burger creations. Almost 10 years later, we’ve ...

Description truncated.

Title Length16 chars

Recommended: 50-60 chars (~97px / 580px)

Description Length257 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (39/53) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: index

9 URLs

9 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

37/100

Needs Work

9 14 1

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AI & LLM Readiness

D53/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

10/25

Citation

10/25

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

navheader/footer

Text ratio:3%

Words:364

Token eff.:Optimal

Sections/1K:11

Depth:2/5

Structured Data

4 JSON-LD

Person×1.3Organization×1.1WebSiteSearchAction

sameAs entity links

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 3.5w

Canonical URL

Open Graph2/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

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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.

A+

90/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

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

13/15

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

ARIA & Roles

9/15

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

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.

11/100

1.43 g

CO₂e / view

11.3 MB

Page Weight

Cleaner Than

New Visitor

1.64 g

Returning (cached)

819 mg

Annual (10K/mo)

172.0 kg

Emission Segments

Data Center

320 mg

Network

344 mg

Device

769 mg

Resource Breakdown

JavaScript

414.7 KB

Images

10.4 MB

CSS

509.4 KB

Fonts

2.1 KB

HTML

13.5 KB

Other

300 B

Green Hosting Not Verified

Sucuri

8 recommendations

•Carbon footprint recommendation preview...

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A+

Security Score

100%Excellent

Interactive

HTTPS

WAF

41d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GoDaddy.com, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

15.04.2026

Valid Until

14.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

burger21.comwww.burger21.com

SHA-256 Fingerprint

A3:3A:0B:D5:70:B8:19:BE:35:56:C0:F6:6D:E7:8F:3F:54:14:04:0F...

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HTTP Headers

Developer Console

access-control-allow-headers

Content-Type, Authorization

access-control-allow-methods

GET,POST

alt-svc

h3=":443"; ma=2592000, h3-29=":443"; ma=2592000

content-encoding

📦 Gzip(gzip)

content-length

13571

content-security-policy

upgrade-insecure-requests;

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

burger21-com.mail.protection.outlook.com

Domain Information

burger21.com

Domain Age

16y 5m

Created

16.12.2009

Expires

16.12.2029

Last Updated

17.12.2024

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

69/100

Mobile Friendly1 breakpoint

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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Graduate + NoyhABistro-Regular

WCAG Partial

68/100

Readability

/30

22/30

14px · LH 1.43

Hierarchy

/20

14/20

3x ratio

WCAG

/25

17/25

1:1 min contrast

Performance

/25

15/25

2 fonts · 3 req

Heading Font

Graduate

Sans42px

Body Font

NoyhABistro-Regular

Sans14px

Contrast Ratio

1:1

4 issues

Reading Comfort

~43 CPL

Narrow lines

42px

18px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

GGoogle FontsFluid Type (rem)Flesch 54

Color Palette

8 unique colors

Light

#ffffff

Background· 36.2%

#f4cd91

Primary· 19.9%

#fee6bc

Accent· 13.600000000000001%

#c7926c

Secondary· 6.2%

#a7353f

Accent· 5.6%

#d4bb8c

Secondary· 4%

#f6efe3

Accent· 2.8%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(6)burger21.com(4)connect.facebook.net(3)google-analytics.com(2)ajax.googleapis.com(2)

Website Identity

Burger 21 – Burgers Reinvented

Organization

Burger 21 is a fast-casual restaurant franchise specializing in chef-inspired burgers, hand-crafted shakes, fries, salads, and more.

www.burger21.com

16 years old

Tampa

Tampa, FL

Location detected: 🇺🇸 United States, Tampavia schema_nap

GoDaddy.com, LLC📧 Microsoft 365enEst. 2009

Social Profiles

Facebook X (Twitter)Instagram

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Last analyzed: 03 Jun 2026 at 06:32

Historical Analysis & Change Tracking