cofounderslab.com

https://cofounderslab.com· First analyzed 21 May 2026· Updated 21 May 2026

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cofounderslab.com

Mobile

Sponsored

Hosting Provider

Vercel

vercel.com

IP Address

76.76.21.21

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns-492.awsdns-61.com.ns-860.awsdns-43.net.ns-1031.awsdns-00.org.ns-1693.awsdns-19.co.uk.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

601 ms10%

Speed Index

781 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

500 KB

60 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Styling

Tailwind CSS

Infrastructure

Platform

Vercel

CDN

Vercel Image

Technology Stack

4 Technologies Detected

Meta Frameworks

CSS Frameworks

Fonts

Platforms

SEO Analysis

D52/100

Meta Tags0/15

Content6/12

Headings8/8

Technical18/25

E-E-A-T2/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

cofounderslab.comcofounderslab.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 (2)

• Missing page title — critical for SEO rankings and SERP display
• Missing meta description — important for click-through rates in SERPs

13 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

10 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

15/100

Poor

4 13

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

20/25

Machine Read.

11/25

Schema Data

3/25

Citation

6/25

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

nav

Text ratio:2%

Words:362

Token eff.:Optimal

Sections/1K:44.2

Depth:1/5

Structured Data

1 JSON-LD

Organization×1.1

sameAs entity links

Citation Readiness

Opening Summary19w

Descriptive Headingsavg 3.9w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

77/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

12/20

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

Forms & Inputs

10/15

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

11/15

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.

2 recommendations

•Accessibility recommendation preview...

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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.

76/100

51 mg

CO₂e / view

500.5 KB

Page Weight

90%

Cleaner Than

New Visitor

58 mg

Returning (cached)

29 mg

Annual (10K/mo)

6.1 kg

Emission Segments

Data Center

3 mg

Network

15 mg

Device

33 mg

Resource Breakdown

JavaScript

354.7 KB

Images

95.1 KB

CSS

38.9 KB

HTML

11.5 KB

Other

302 B

Green Hosting Verified

Vercel

Provider Match

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

76d

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

Valid From

08.05.2026

Valid Until

06.08.2026

Subject Alternative Names (1)

cofounderslab.com

SHA-256 Fingerprint

C8:BD:A0:B5:7F:66:BA:9C:A2:4F:D4:18:37:9B:12:D6:26:9F:59:C9...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin

age

3074066

cache-control

🟡 0s(public, max-age=0, must-revalidate)

content-disposition

inline

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (6)

aspmx2.googlemail.com

alt2.aspmx.l.google.com

aspmx.l.google.com

inbound-smtp.us-east-1.amazonaws.com

+2 more

Domain Information

cofounderslab.com

Domain Age

15y 3m

Created

29.01.2011

Expires

29.01.2027

Last Updated

28.01.2026

Registrar

Tucows Domains Inc.

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.

73/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Apple Color Emoji

WCAG Partial

70/100

Readability

/30

21/30

20px · LH 1.50

Hierarchy

/20

18/20

3.6x ratio · ✓ H1→H6

WCAG

/25

16/25

1.17:1 min contrast

Performance

/25

15/25

2 fonts · 1 req

Heading Font

Apple Color Emoji

Sans72px

Body Font

Apple Color Emoji

Sans20px

Contrast Ratio

1.17:1

12 issues

Reading Comfort

~39 CPL

Narrow lines

72px

48px

36px

24px

20px

✅ Excellent readability: 20px body text is ideal for all devices.

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

⚠️ Hard to read: Flesch score 35/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 12 elements below WCAG AA threshold (min 1.2:1).

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

✅ Strong hierarchy: Headlines are 3.6x larger than body text.

GGoogle Fonts Buy on MyFontsFlesch 35

Color Palette

4 unique colors

Light

#101729

Primary· 78.90000000000002%

#1a2340

Secondary· 13.3%

#ab7979

Secondary· 4.9%

#362d49

Secondary· 3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(19)messenger.customerly.io(1)

Website Identity

CoFoundersLab

Organization

cofounderslab.com/

15 years old

Location detected: 🇺🇸 United Statesvia ip

Tucows Domains Inc.📧 Google Workspaceen

Social Profiles

Facebook Instagram

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Last analyzed: 21 May 2026 at 10:03

Historical Analysis & Change Tracking