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deno.dev

https://deno.dev· First analyzed 06 May 2026· Updated 06 May 2026
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deno.dev
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Mobile screenshot of deno.dev
Mobile

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Hosting Provider

Google Cloud Platform
cloud.google.com

IP Address

34.120.54.55

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

Server

Deno

Nameservers

ns-cloud-c2.googledomains.com.ns-cloud-c1.googledomains.com.ns-cloud-c4.googledomains.com.ns-cloud-c3.googledomains.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
797 ms10%
Speed Index
1.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
412 KB
20 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Google Cloud Platform

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Runtime

1
Deno

SEO Analysis

F38/100
12
7
2
Meta Tags4/15
Content0/12
Headings6/8
Technical9/21
E-E-A-T0/7
Images4/7
Links3/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
D
deno.devdeno.dev

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No description available for this page.

Title Length16 chars

Recommended: 50-60 chars (~90px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Very thin content (39 words). Search engines need substantial content for ranking.

9 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

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.

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AI & LLM Readiness

F32/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
1/25

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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:3%
Words:35
Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary14w
Descriptive Headings
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
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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.
B
74/100
11
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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
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.
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.
74/100
A
42 mg
CO₂e / view
411.7 KB
Page Weight
90%
Cleaner Than
New Visitor
48 mg
vs
Returning (cached)
24 mg
Annual (10K/mo)
5.0 kg
Emission Segments
Data Center
2 mg
Network
12 mg
Device
27 mg
Resource Breakdown
JavaScript
21.2 KB
Images
12.3 KB
CSS
32.4 KB
Fonts
343.5 KB
HTML
2.4 KB
Green Hosting Verified
Google Cloud
GWF Verified
2 recommendations
  • •Carbon footprint recommendation preview...
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B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

135d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

20.08.2025

Valid Until

18.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

console.deno.comapp.deno.com

SHA-256 Fingerprint

67:7F:BA:EB:AD:64:85:92:4F:FB:01:14:F3:BD:11:D1:7E:6C:19:40...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=2592000
content-encoding
📦 Gzip(gzip)
content-length
349
content-type
text/html; charset=utf-8
date
Wed, 06 May 2026 01:52:26 GMT
server
deno/gcp-europe-west2
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

deno.dev

DNSSEC
Not Enabled

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
64/100
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, initial-scale=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Moranga + Recursive

WCAG AAA
81/100
Readability
/30
21/30

14px · LH 1.43

Hierarchy
/20
14/20

1.71x ratio · ✓ H1→H6

WCAG
/25
24/25

7.63:1 min contrast

Performance
/25
22/25

2 fonts · 3 req

Heading Font

Moranga

Sans24px

Body Font

Recursive

Sans14px

Contrast Ratio

7.63:1

WCAG AAA (≥7:1)

Reading Comfort

~37 CPL

Narrow lines
24px
h1
14px
p

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

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

✅ Easy to read: Flesch score 89/100 — accessible to general audiences.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 7.6:1).

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

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFontsVariable FontsFlesch 89

Color Palette

3 unique colors
Light
#78838b
Secondary· 0.7%
#f8f9fd
Primary· 98.30000000000001%
#d5d9de
Border· 1%

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

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Scripts & Styles

1 Resources

0
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

deno.dev

Location detected: 🇺🇸 United Statesvia ip

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Last analyzed: 06 May 2026 at 01:52

Historical Analysis & Change Tracking