StackOptic
Back to Search
clerk.io favicon

clerk.io

https://clerk.io· First analyzed 25 May 2026· Updated 25 May 2026
Export
clerk.io
Desktop screenshot of clerk.io
Mobile screenshot of clerk.io
Mobile

Sponsored

Hosting Provider

Webflow
webflow.com

IP Address

198.202.211.1

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS209242

Organization

Webflow, Inc

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-1077.awsdns-06.org.ns-158.awsdns-19.com.ns-2015.awsdns-59.co.uk.ns-857.awsdns-43.net.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
116 KB
142 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Webflow

Technology Stack

17 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
SegmentMouseflow

UI Components

2
SwiperSlick Carousel

Customer Support

2
IntercomZendesk

Libraries

1
jQueryv3.5.1

Other

1
Lottie

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Marketing

1
HubSpot

Advertising

1
LinkedIn Ads

Payments

1
Stripe

Popups & Forms

1
Sleeknote

CDN

1
Cloudflare

SEO Analysis

A80/100
24
5
0
Meta Tags12/15
Content10/12
Headings8/8
Technical22/25
E-E-A-T2/7
Images5/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
C
clerk.ioclerk.io

Clerk.io | The AI Agent that makes your E-commerce more profitable

Clerk.io's AI agent helps e-commerce stores grow revenue with personalized search, product recommendations, email campaigns, social media and ads.

Title Length66 chars

Recommended: 50-60 chars (~405px / 580px)

Description Length146 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    802 URLs

    robots.txt

    3 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    27/100
    Needs Work
    7 11

    Sponsored

    AI & LLM Readiness

    D44/100
    Bot Access
    20/25
    Machine Read.
    7/25
    Schema Data
    6/25
    Citation
    11/25

    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.txtvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:4%
    Words:4,806
    Token eff.:Poor Structure

    Structured Data

    2 JSON-LD
    Organization×1.1WebSite
    sameAs entity links

    Citation Readiness

    Opening Summary822w
    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.
    A
    85/100
    13
    Passed
    2
    Critical
    0
    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
    11/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    6/15
    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.
    56/100
    A+
    14 mg
    CO₂e / view
    115.6 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    16 mg
    vs
    Returning (cached)
    8 mg
    Annual (10K/mo)
    1.7 kg
    Emission Segments
    Data Center
    3 mg
    Network
    3 mg
    Device
    8 mg
    Resource Breakdown
    JavaScript
    62.0 KB
    CSS
    5.9 KB
    HTML
    47.7 KB
    Green Hosting Not Verified
    Webflow
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    50%Poor
    Critical / Transactional

    HTTPS

    WAF

    50d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Google Trust Services

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-256

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    16.04.2026

    Valid Until

    15.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    www.clerk.io

    SHA-256 Fingerprint

    9C:26:41:99:5B:E1:96:B7:5C:8A:38:60:AE:53:6E:12:8D:2A:2C:66...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=86400
    cf-cache-status
    HIT
    cf-ray🇫🇷 Paris
    a011c267fe71d494-CDG
    content-encoding
    📦 Gzip(gzip)
    content-security-policy
    frame-ancestors 'self'
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (5)

    alt2.aspmx.l.google.com
    aspmx.l.google.com
    alt3.aspmx.l.google.com
    alt4.aspmx.l.google.com

    +1 more

    Domain Information

    clerk.io

    Domain Age
    13y 1m

    Created

    12.04.2013

    Expires

    12.04.2027

    Last Updated

    13.03.2026

    Registrar

    Gandi SAS

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked
    Legitimate interest basis 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.
    B
    77/100
    Mobile Friendly35 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
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Poppins

    WCAG Partial
    77/100
    Readability
    /30
    24/30

    17px · LH 1.50

    Hierarchy
    /20
    18/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    3.08:1 min contrast

    Performance
    /25
    18/25

    1 font · 4 req

    Heading Font

    Poppins

    Sans50px

    Body Font

    Poppins

    Sans17px

    Contrast Ratio

    3.08:1

    5 issues

    Reading Comfort

    ~35 CPL

    Narrow lines
    50px
    h1
    35px
    h2
    35px
    h3
    17px
    p

    ✅ Excellent readability: 17px body text is ideal for all devices.

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

    ⚠️ Hard to read: Flesch score 44/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 3.1:1).

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

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

    Buy on MyFontsFluid Type (rem)Flesch 44

    Color Palette

    6 unique colors
    2.08:1 Fail Light
    #ffffff
    Background· 86.40000000000002%
    #b2b4b7
    Other· 3.4%
    #48387a
    Primary· 3%
    #e5dcd8
    Secondary· 2.7%
    #de7855
    Accent· 2.2%
    #7c8299
    Secondary· 2.2%

    Business & Marketing Stack

    8 Tools Detected

    Enterprise

    CRM Systems

    1
    HubSpotMid-Market

    Customer Relationship Management platforms

    Customer Support

    1
    IntercomMid-Market

    Live chat and helpdesk tools

    Behavior Analytics

    3
    Google Tag ManagerFree
    Google AnalyticsFree
    MouseflowSMB

    User behavior and product analytics

    Lead Generation

    1
    SleeknoteSMB

    Popups, forms, and lead capture tools

    Advertising

    1
    LinkedIn AdsEnterprise

    Ad platforms and retargeting pixels

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    6

    Categories

    8

    Total Tools

    1

    Enterprise

    3

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    23 Resources

    20
    Scripts
    3
    Styles
    15
    Async
    0
    Defer

    Top Script Sources

    ss.clerk.io(3)cdn.jsdelivr.net(3)sleeknotestaticcontent.sleeknote.com(3)consent.cookiebot.com(2)googletagmanager.com(2)

    Website Identity

    Clerk.io

    Clerk.io

    Organization

    Clerk.io's AI agent helps e-commerce stores grow revenue with personalized search, product recommendations, email campaigns, social media and ads.

    support@clerk.io
    004570555100
    www.clerk.io
    13 years old
    Location detected: 🇺🇸 United Statesvia ip
    Gandi SAS📧 Google Workspaceen-GB

    Sponsored

    Last analyzed: 25 May 2026 at 04:22

    Historical Analysis & Change Tracking