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swc.rs

https://swc.rs· First analyzed 20 May 2026· Updated 20 May 2026
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swc.rs
Desktop screenshot of swc.rs
Mobile screenshot of swc.rs
Mobile

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Hosting Provider

Vercel
vercel.com

IP Address

76.76.21.21

Site Location

🇷🇸 Serbiavia tld

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

CDN

Cloudflare

WAF

Cloudflare

Nameservers

uma.ns.cloudflare.com.aiden.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
520 ms10%
Speed Index
676 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
540 KB
24 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Styling
Tailwind CSS
Infrastructure
Platform
Vercel
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

3 Technologies Detected

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Platforms

1
Vercel

SEO Analysis

D57/100
16
9
1
Meta Tags7/15
Content8/12
Headings8/8
Technical11/21
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social1/5
Freshness2/4
Mobile4/4
Indexability3/3
S
swc.rsswc.rs

Rust-based platform for the Web

No description available for this page.

Title Length31 chars

Recommended: 50-60 chars (~195px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

10 issues found

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Local SEO

Local Search Readiness

3/100
Poor
1 14 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

D41/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
10/25

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
code blocksnav
Text ratio:2%
Words:375
Token eff.:Optimal
Sections/1K:16
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary37w
Descriptive Headingsavg 1w
Canonical URL
Open Graph0/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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
71/100
13
Passed
2
Critical
2
Warnings
Images & Alt Text
10/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
15/15
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.
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.
79/100
A
55 mg
CO₂e / view
539.9 KB
Page Weight
80%
Cleaner Than
New Visitor
62 mg
vs
Returning (cached)
31 mg
Annual (10K/mo)
6.5 kg
Emission Segments
Data Center
3 mg
Network
16 mg
Device
36 mg
Resource Breakdown
JavaScript
281.2 KB
Images
176.2 KB
CSS
18.5 KB
HTML
16.9 KB
Other
47.1 KB
Green Hosting Verified
Vercel
Provider Match
1 recommendation
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

56d

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

17.04.2026

Valid Until

16.07.2026

Subject Alternative Names (1)

swc.rs

SHA-256 Fingerprint

E8:42:38:84:69:40:F8:C6:DF:F2:AB:25:B6:E2:26:61:27:A0:0A:C4...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin
*
age
2279892
cache-control
🟡 0s(public, max-age=0, must-revalidate)
content-disposition
inline
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (3)

route3.mx.cloudflare.net
route1.mx.cloudflare.net
route2.mx.cloudflare.net

Domain Information

swc.rs

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.
B
79/100
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

Typography & Readability

Apple Color Emoji

WCAG AAA
76/100
Readability
/30
20/30

16px · LH 1.75

Hierarchy
/20
16/20

3x ratio

WCAG
/25
24/25

20.12:1 min contrast

Performance
/25
16/25

1 font

Heading Font

Apple Color Emoji

Sans48px

Body Font

Apple Color Emoji

Sans16px

Contrast Ratio

20.12:1

WCAG AAA (≥7:1)

Reading Comfort

~38 CPL

Narrow lines
48px
h1
30px
h2
16px
h3
20px
h4
16px
p

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

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 20.1:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

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

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 52

Color Palette

5 unique colors
2.73:1 Fail Light
#fafafa
Primary· 92.80000000000001%
#98999d
Other· 1.3%
#d0d7dd
Secondary· 1.8%
#eceae8
Secondary· 1.7%

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

15 Resources

12
Scripts
3
Styles
11
Async
0
Defer

Top Script Sources

local(12)

Website Identity

swc.rs

Location detected: 🇷🇸 Serbiavia tld
en

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Last analyzed: 20 May 2026 at 17:40

Historical Analysis & Change Tracking

swc.rs Technology Stack - Built With Next.js, Tailwind CSS, Vercel | StackOptic | StackOptic