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certain.com

https://certain.com· First analyzed 19 May 2026· Updated 19 May 2026
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certain.com
Desktop screenshot of certain.com
Mobile screenshot of certain.com
Mobile

Sponsored

Hosting Provider

Cloudflare
cloudflare.com

IP Address

185.158.133.1

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS13335

Organization

DET FRA

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns14.dnsmadeeasy.com.ns13.dnsmadeeasy.com.ns15.dnsmadeeasy.com.ns10.dnsmadeeasy.com.+2 more

Performance

97

Core Web Vitals

Weight

First Contentful Paint
962 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
386 KB
17 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Technology Stack

4 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

CDN

1
Cloudflare

SEO Analysis

B77/100
23
6
0
Meta Tags13/15
Content6/12
Headings8/8
Technical23/25
E-E-A-T5/7
Images4/7
Links4/5
URL5/5
Social5/5
Freshness0/4
Mobile1/4
Indexability3/3
C
certain.comcertain.com

AI-Powered Event Intelligence Platform | Certain

Turn every attendee interaction into a high-fidelity sales signal. Certain is the AI-powered event intelligence platform that captures buying signals, automa...

Description truncated.
Title Length48 chars

Recommended: 50-60 chars (~285px / 580px)

Description Length193 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    25 URLs

    robots.txt

    10 rules

    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

    D54/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    3/25
    Citation
    18/25

    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
    blockquotesnav
    Text ratio:7%
    Words:459
    Token eff.:Optimal
    Sections/1K:15.3
    Depth:2/5

    Structured Data

    2 JSON-LD
    Organization×1.1
    sameAs entity links

    Citation Readiness

    Opening Summary27w
    Descriptive Headingsavg 3.1w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (5)
    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
    86/100
    14
    Passed
    2
    Critical
    1
    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
    7/15
    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.
    81/100
    A+
    39 mg
    CO₂e / view
    385.8 KB
    Page Weight
    90%
    Cleaner Than
    New Visitor
    45 mg
    vs
    Returning (cached)
    22 mg
    Annual (10K/mo)
    4.7 kg
    Emission Segments
    Data Center
    2 mg
    Network
    12 mg
    Device
    26 mg
    Resource Breakdown
    JavaScript
    353.2 KB
    Images
    14.5 KB
    CSS
    16.1 KB
    HTML
    1.7 KB
    Other
    304 B
    Green Hosting Verified
    Google Cloud
    GWF Verified
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    56%Poor
    Interactive

    HTTPS

    WAF

    86d

    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

    Valid From

    15.05.2026

    Valid Until

    13.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (1)

    certain.com

    SHA-256 Fingerprint

    40:A6:8B:9C:45:AC:76:0E:C8:81:E1:19:68:0A:CF:0D:C7:31:9D:02...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-cache, must-revalidate, max-age=0)
    cf-ray🇫🇷 Paris
    9fdf1fdc0a956f12-CDG
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Tue, 19 May 2026 00:53:24 GMT
    referrer-policy
    strict-origin-when-cross-origin
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    93

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    certain-com.mail.protection.outlook.com

    Domain Information

    certain.com

    Domain Age
    30y 7m

    Created

    26.10.1995

    Expires

    25.10.2026

    Last Updated

    29.08.2025

    Registrar

    Network Solutions, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    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
    74/100
    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=1.0
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Plus Jakarta Sans + Open Sans

    WCAG Partial
    65/100
    Readability
    /30
    19/30

    14px · LH 1.60

    Hierarchy
    /20
    19/20

    5.03x ratio · ✓ H1→H6

    WCAG
    /25
    16/25

    1:1 min contrast

    Performance
    /25
    11/25

    3 fonts · 1 req

    Heading Font

    Plus Jakarta Sans

    Sans70px

    Body Font

    Open Sans

    Sans14px

    Contrast Ratio

    1:1

    6 issues

    Reading Comfort

    ~38 CPL

    Narrow lines
    70px
    h1
    48px
    h2
    20px
    h3
    14px
    h4
    14px
    p

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

    ✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

    ⚠️ Hard to read: Flesch score 31/100. Simplify sentences for wider reach.

    ⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.0:1).

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

    ✅ Strong hierarchy: Headlines are 5.0x larger than body text.

    Buy on MyFontsFluid Type (rem)Flesch 31

    Color Palette

    3 unique colors
    Light
    #eff3f4
    Background· 79.9%
    #192648
    Primary· 18.4%
    #828ca0
    Secondary· 1.5%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    5 Resources

    4
    Scripts
    1
    Styles
    2
    Async
    2
    Defer

    Top Script Sources

    local(2)googletagmanager.com(1)assets.apollo.io(1)

    Website Identity

    Certain, Inc.

    Organization

    AI-powered event intelligence platform that turns attendee engagement into measurable revenue.

    outcome-spark-engine.lovable.app
    30 years old
    Location detected: 🇩🇪 Germanyvia ip
    Network Solutions, LLC📧 Microsoft 365en

    Sponsored

    Last analyzed: 19 May 2026 at 00:53

    Historical Analysis & Change Tracking