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sertifier.com

https://sertifier.com· First analyzed 28 May 2026· Updated 28 May 2026
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sertifier.com
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Mobile screenshot of sertifier.com
Mobile

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Hosting Provider

Google Cloud Platform
cloud.google.com

IP Address

34.102.213.113

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

Server

Google Frontend

Nameservers

ns1.digitalocean.com.ns3.digitalocean.com.ns2.digitalocean.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
602 ms10%
Speed Index
783 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.6 MB
135 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
HubSpot CMS

Technology Stack

15 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Facebook PixelFullStory

Other

2
AOS (Animate On Scroll)Lottie

Fonts

2
Google FontsAdobe Fonts (Typekit)

Advertising

2
LinkedIn AdsMicrosoft Advertising

Meta Frameworks

1
Nuxt.js

CSS Frameworks

1
Tailwind CSS

Marketing

1
HubSpot

Languages

1
Go

Security

1
reCAPTCHA

SEO Analysis

A81/100
25
3
0
Meta Tags15/15
Content8/12
Headings8/8
Technical23/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
S
sertifier.comsertifier.com

Digital Badges and Certificates Software | Sertifier

Create, send, and verify digital badges and certificates with ready-made templates. Display skills and achievements with Sertifier's digital badging software.

Title Length52 chars

Recommended: 50-60 chars (~307px / 580px)

Description Length158 chars

Recommended: 120-160 chars

Issues (0)

    3 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    133 URLs

    robots.txt

    5 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    17/100
    Poor
    5 12 2

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

    Sponsored

    AI & LLM Readiness

    D52/100
    Bot Access
    20/25
    Machine Read.
    15/25
    Schema Data
    5/25
    Citation
    12/25

    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:5%
    Words:2,261
    Token eff.:Optimal

    Structured Data

    2 JSON-LD
    Organization×1.1BreadcrumbList
    sameAs entity links

    Citation Readiness

    Opening Summary20w
    Descriptive Headingsavg 4.6w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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
    82/100
    13
    Passed
    3
    Critical
    0
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    20/20
    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.
    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.
    55/100
    D
    265 mg
    CO₂e / view
    2.6 MB
    Page Weight
    30%
    Cleaner Than
    New Visitor
    302 mg
    vs
    Returning (cached)
    151 mg
    Annual (10K/mo)
    31.7 kg
    Emission Segments
    Data Center
    13 mg
    Network
    78 mg
    Device
    174 mg
    Resource Breakdown
    JavaScript
    534.7 KB
    Images
    1.0 MB
    CSS
    1017.9 KB
    Fonts
    1.1 KB
    HTML
    34.7 KB
    Other
    1.8 KB
    Green Hosting Verified
    Google Cloud
    GWF Verified
    6 recommendations
    • •Carbon footprint recommendation preview...
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    B

    Security Score

    71%Good
    Static / Informational

    HTTPS

    No WAF

    44d

    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

    10.06.2025

    Valid Until

    12.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.sertifier.comsertifier.com

    SHA-256 Fingerprint

    95:C3:63:6D:5D:BF:FB:39:23:5A:C7:F3:49:D1:F9:BC:18:69:FB:25...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=2592000
    content-encoding
    ⚡ Brotli(br)
    content-length
    35277
    content-type
    text/html; charset=utf-8
    date
    Thu, 28 May 2026 12:30:06 GMT
    etag
    "89cd-NmZiGYh7ZKYx60hetaaWN7I8IoA"
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    sertifier-com.mail.protection.outlook.com

    Domain Information

    sertifier.com

    Domain Age
    8y 1m

    Created

    16.04.2018

    Expires

    16.04.2028

    Last Updated

    07.04.2023

    Registrar

    GoDaddy.com, LLC

    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

    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
    79/100
    Mobile Friendly55 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

    -apple-system

    WCAG Partial
    82/100
    Readability
    /30
    20/30

    16px · LH 1.25

    Hierarchy
    /20
    20/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    20/25

    3.3:1 min contrast

    Performance
    /25
    22/25

    System fonts

    Heading Font

    -apple-system

    Sans48px

    Body Font

    -apple-system

    Sans16px

    Contrast Ratio

    3.3:1

    2 issues

    Reading Comfort

    ~35 CPL

    Narrow lines
    48px
    h1
    32px
    h2
    32px
    h3
    16px
    p

    ✅ Excellent readability: 16px body text is ideal for all devices.

    ⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

    ⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 3.3:1).

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

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

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

    GGoogle FontsFluid Type (rem)

    Color Palette

    6 unique colors
    Light
    #d1d8d6
    Secondary· 4.3%
    #f8f8f6
    Primary· 73.2%
    #b7c5c3
    Secondary· 8.3%
    #4d635f
    Secondary· 6.7%
    #9eb3ac
    Secondary· 4.8%

    Business & Marketing Stack

    9 Tools Detected

    Enterprise

    CRM Systems

    1
    HubSpotMid-Market

    Customer Relationship Management platforms

    Behavior Analytics

    2
    Google AnalyticsFree
    FullStoryEnterprise

    User behavior and product analytics

    Scheduling

    1
    CalendlySMB

    Appointment and meeting schedulers

    Advertising

    3
    Facebook PixelMid-Market
    LinkedIn AdsEnterprise
    Microsoft AdsEnterprise

    Ad platforms and retargeting pixels

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    Affiliate & Partnerships

    1
    FirstPromoterSMB

    Affiliate networks and partner tracking

    6

    Categories

    9

    Total Tools

    3

    Enterprise

    3

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    28 Resources

    20
    Scripts
    8
    Styles
    15
    Async
    2
    Defer

    Top Script Sources

    bat.bing.com(3)googletagmanager.com(2)snap.licdn.com(2)connect.facebook.net(2)js-eu1.hs-scripts.com(1)

    Website Identity

    sertifier.com

    8 years old
    Location detected: 🇺🇸 United Statesvia ip
    GoDaddy.com, LLC📧 Microsoft 365en

    Sponsored

    Last analyzed: 28 May 2026 at 12:30

    Historical Analysis & Change Tracking