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ui.dev

https://ui.dev· First analyzed 12 May 2026· Updated 12 May 2026
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ui.dev
Desktop screenshot of ui.dev
Mobile screenshot of ui.dev
Mobile

Sponsored

Hosting Provider

Cloudflare
cloudflare.com

IP Address

172.67.189.80

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

jasmine.ns.cloudflare.com.graham.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
467 ms10%
Speed Index
607 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
736 KB
69 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
Cloudflare

Technology Stack

6 Technologies Detected

Meta Frameworks

2
Next.jsSvelteKit

CSS Frameworks

1
Tailwind CSS

Analytics

1
Facebook Pixel

Advertising

1
Twitter Ads

CDN

1
Cloudflare

SEO Analysis

C68/100
20
8
0
Meta Tags10/15
Content9/12
Headings5/8
Technical15/25
E-E-A-T0/7
Images7/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
U
ui.devui.dev

Fireship | JavaScript, but fun.

We help JavaScript developers make more money - and enjoy themselves in the process.

Title Length31 chars

Recommended: 50-60 chars (~179px / 580px)

Description Length84 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    1 URLs

    1 sub-sitemaps

    robots.txt

    25 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    0/100
    Poor
    15 2

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

    Sponsored

    AI & LLM Readiness

    F38/100
    Bot Access
    15/25
    Machine Read.
    12/25
    Schema Data
    0/25
    Citation
    11/25

    AI Bot Access

    6/14 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
    blockquotesnavheader/footer
    Text ratio:5%
    Words:590
    Token eff.:Optimal
    Sections/1K:6.8
    Depth:3/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary19w
    Descriptive Headingsavg 2w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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.
    C
    67/100
    9
    Passed
    4
    Critical
    2
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    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
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    5 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.
    71/100
    A
    74 mg
    CO₂e / view
    736.2 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    85 mg
    vs
    Returning (cached)
    43 mg
    Annual (10K/mo)
    8.9 kg
    Emission Segments
    Data Center
    4 mg
    Network
    22 mg
    Device
    49 mg
    Resource Breakdown
    JavaScript
    401.2 KB
    Images
    206.9 KB
    CSS
    40.3 KB
    Fonts
    69.2 KB
    HTML
    14.1 KB
    Other
    4.6 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    D

    Security Score

    41%Poor
    Interactive

    HTTPS

    WAF

    38d

    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

    21.03.2026

    Valid Until

    19.06.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    fireship.dev*.fireship.dev

    SHA-256 Fingerprint

    DF:4A:86:5D:03:9D:C5:5C:AD:C1:0E:AF:36:23:A6:68:47:12:C7:C7...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    age
    1547756
    alt-svc
    h3=":443"; ma=86400
    cache-control
    🟡 0s(public, max-age=0, must-revalidate)
    cf-cache-status
    DYNAMIC
    cf-ray🇩🇪 Frankfurt
    9fab94dcdab9e7b9-FRA
    Good Warning Issue

    Email Infrastructure

    Google Workspace

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    Reject (Strictest)

    MX Records (5)

    aspmx.l.google.com
    alt3.aspmx.l.google.com
    alt1.aspmx.l.google.com
    alt2.aspmx.l.google.com

    +1 more

    Domain Information

    ui.dev

    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.
    C
    68/100
    Mobile Friendly
    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...
    Upgrade to view recommendations

    Typography & Readability

    CubanoRegular + Outfit

    WCAG Partial
    71/100
    Readability
    /30
    23/30

    24px · LH 1.33

    Hierarchy
    /20
    13/20

    3x ratio

    WCAG
    /25
    17/25

    1.11:1 min contrast

    Performance
    /25
    18/25

    2 fonts · 6 req

    Heading Font

    CubanoRegular

    Sans72px

    Body Font

    Outfit

    Sans24px

    Contrast Ratio

    1.11:1

    15 issues

    Reading Comfort

    ~35 CPL

    Narrow lines
    72px
    h1
    72px
    h3
    36px
    h4
    24px
    p

    ✅ Excellent readability: 24px body text is ideal for all devices.

    ⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

    ⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 1.1:1).

    ⚠️ Minor heading issue: 1 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).

    Buy on MyFontsFluid Type (rem)Flesch 61

    Color Palette

    7 unique colors
    Dark
    #0f0d0e
    Background· 69.39999999999999%
    #d1d195
    Primary· 4.8%
    #789a6e
    Secondary· 4.5%
    #935b43
    Secondary· 4.1%
    #4b1d23
    Secondary· 0.6%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    2
    Facebook PixelMid-Market
    Twitter/X AdsMid-Market

    Ad platforms and retargeting pixels

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    2

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    21 Resources

    20
    Scripts
    1
    Styles
    4
    Async
    16
    Defer

    Top Script Sources

    local(16)connect.facebook.net(3)static.ads-twitter.com(1)

    Website Identity

    ui.dev

    Location detected: 🇨🇦 Canadavia ip
    📧 Google Workspace

    Sponsored

    Last analyzed: 12 May 2026 at 18:45

    Historical Analysis & Change Tracking