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devsisters.com

https://devsisters.com· First analyzed 29 May 2026· Updated 29 May 2026
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devsisters.com
Desktop screenshot of devsisters.com
Mobile screenshot of devsisters.com
Mobile

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Hosting Provider

Vercel
vercel.com

IP Address

216.150.1.1

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

ns-870.awsdns-44.net.ns-1447.awsdns-52.org.ns-1712.awsdns-22.co.uk.ns-458.awsdns-57.com.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
13.7 MB
224 requests

Image Optimization

WebPResponsiveVercel Image Optimization
0–49
50–89
90–100

Architecture Stack

Hybrid
⚡ SSG
Frontend
Framework
Next.js
Infrastructure
Platform
Vercel
CDN
Vercel Image

Technology Stack

8 Technologies Detected

Fonts

2
Adobe Fonts (Typekit)Adobe Fonts

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Next.js

Other

1
Lottie

Customer Support

1
Zendesk

Platforms

1
Vercel

SEO Analysis

D57/100
17
9
1
Meta Tags8/15
Content6/12
Headings3/8
Technical15/25
E-E-A-T0/7
Images6/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile1/4
Indexability3/3
D
devsisters.comdevsisters.com

데브시스터즈 | We Create a Joyful World!

세상을 즐겁게! 더 넓은 곳에서, 더 많은 사람들에게, 더 오랜 시간 동안

Title Length34 chars

Recommended: 50-60 chars (~207px / 580px)

Description Length41 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

50 URLs

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

13/100
Poor
4 11 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

F39/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
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.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:2%
Words:1,580
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary76w
Descriptive Headingsavg 2.3w
Canonical URL
Open Graph3/3
Twitter Card2/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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
72/100
9
Passed
3
Critical
1
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
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
0/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
37/100
F
1.41 g
CO₂e / view
13.7 MB
Page Weight
5%
Cleaner Than
New Visitor
1.61 g
vs
Returning (cached)
807 mg
Annual (10K/mo)
169.6 kg
Emission Segments
Data Center
69 mg
Network
415 mg
Device
929 mg
Resource Breakdown
JavaScript
369.0 KB
Images
10.9 MB
CSS
698.6 KB
HTML
49.5 KB
Other
1.6 MB
Green Hosting Verified
Vercel
Provider Match
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

31d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

31.03.2026

Valid Until

29.06.2026

Subject Alternative Names (1)

www.devsisters.com

SHA-256 Fingerprint

A7:30:AD:36:89:36:C2:C9:3B:C6:FD:8C:E2:86:FD:B5:C8:D0:B4:0A...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

age
1289
cache-control
🟡 0s(public, max-age=0, must-revalidate)
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=utf-8
date
Fri, 29 May 2026 02:58:05 GMT
etag
W/"h97tunclnh85sp"
Good Warning Issue

Email Infrastructure

Google Workspace

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com
aspmx.l.google.com
aspmx2.googlemail.com
aspmx3.googlemail.com

+1 more

Domain Information

devsisters.com

Domain Age
17y 3m

Created

09.02.2009

Expires

09.02.2027

Last Updated

05.01.2026

Registrar

Gandi SAS

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
65/100
Mobile Friendly673 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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Dotum + Pretendard Medium

WCAG Partial
52/100
Readability
/30
21/30

16px · LH 2.00

Hierarchy
/20
6/20
WCAG
/25
11/25

2.55:1 min contrast

Performance
/25
14/25

4 fonts · 2 req

Heading Font

Dotum

Sans

Body Font

Pretendard Medium

Sans16px

Contrast Ratio

2.55:1

39 issues

Reading Comfort

~42 CPL

Narrow lines
97px
h2
68px
h3
16px
p

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

⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 39 elements below WCAG AA threshold (min 2.5:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

AAdobe FontsBuy on MyFontsFlesch 64

Color Palette

6 unique colors
Light
#ffffff
Background· 46%
#0e1423
Primary· 37%
#624153
Secondary· 6.4%
#4c254f
Secondary· 3.5%
#ae674a
Secondary· 3%

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

22 Resources

20
Scripts
2
Styles
0
Async
17
Defer

Top Script Sources

local(18)developers.kakao.com(1)googletagmanager.com(1)

Website Identity

devsisters.com

help_cookierunbraverse@devsisters.com
17 years old

(06019) 서울특별시 강남구 도산대로 327

Location detected: 🇺🇸 United Statesvia ip
Gandi SAS📧 Google Workspaceko

Social Profiles

X (Twitter)LinkedIn

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Last analyzed: 29 May 2026 at 03:20

Historical Analysis & Change Tracking