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sylabs.io

https://sylabs.io· First analyzed 17 May 2026· Updated 17 May 2026
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sylabs.io
Desktop screenshot of sylabs.io
Mobile screenshot of sylabs.io
Mobile

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Hosting Provider

Google Cloud Platform
cloud.google.com

IP Address

35.212.126.248

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Washington, United States

ASN

AS15169

Organization

Google Cloud (us-east4)

Server

Nginx

Nameservers

ns-637.awsdns-15.net.ns-1026.awsdns-00.org.ns-2017.awsdns-60.co.uk.ns-399.awsdns-49.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
284 ms10%
Speed Index
369 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
14 KB
2 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Google Cloud Platform

Technology Stack

2 Technologies Detected

Fonts

1
Google Fonts

Web Servers

1
Nginx

SEO Analysis

F26/100
9
8
3
Meta Tags4/15
Content0/12
Headings6/8
Technical9/21
E-E-A-T0/7
Images0/7
Links0/5
URL5/5
Social0/5
Freshness0/4
Mobile2/4
Indexability0/3
S
sylabs.iosylabs.io

403 - Forbidden

No description available for this page.

Title Length15 chars

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

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

  • • Missing meta description — important for click-through rates in SERPs
  • • Very thin content (12 words). Search engines need substantial content for ranking.
  • • Page is set to noindex — will not appear in search results

11 issues found

Upgrade to view details

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.

Sponsored

AI & LLM Readiness

F30/100
Bot Access
20/25
Machine Read.
6/25
Schema Data
0/25
Citation
4/25

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:0%
Words:9
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 (10)
AI readiness recommendation preview...
Upgrade to view recommendations

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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
10
Passed
3
Critical
0
Warnings
Images & Alt Text
20/20
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
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
68/100
A+
1 mg
CO₂e / view
14.0 KB
Page Weight
95%
Cleaner Than
New Visitor
2 mg
vs
Returning (cached)
<0.001 g
Annual (10K/mo)
168 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
<0.001 g
Resource Breakdown
Fonts
2.2 KB
HTML
11.9 KB
Green Hosting Verified
Google Cloud
GWF Verified
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

43d

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 (2)

sylabs.iowww.sylabs.io

SHA-256 Fingerprint

5D:EA:35:4B:D3:D3:F6:8A:A3:E3:9C:2E:9A:1E:E3:F5:F1:9D:50:6C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store,no-cache,max-age=0)
content-length
167
content-type
text/html
date
Sun, 17 May 2026 02:10:03 GMT
expires
Thu, 01 Jan 1970 00:00:01 GMT
host-header
8441280b0c35cbc1147f8ba998a563a7
Good Warning Issue

Email Infrastructure

Google Workspace

Score

93

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt1.aspmx.l.google.com
alt3.aspmx.l.google.com
alt4.aspmx.l.google.com
aspmx.l.google.com

+1 more

Domain Information

sylabs.io

Domain Age
8y 7m

Created

29.09.2017

Expires

29.09.2026

Last Updated

30.01.2026

Registrar

Key-Systems GmbH

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.
D
55/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial
68/100
Readability
/30
26/30

20px · LH 1.40

Hierarchy
/20
16/20

1.8x ratio · ✓ H1→H6

WCAG
/25
15/25

4.15:1 min contrast

Performance
/25
11/25

System fonts

Heading Font

Arial

Sans36px

Body Font

Arial

Sans20px

Contrast Ratio

4.15:1

1 issue

Reading Comfort

Single Font Family

left aligned
36px
h1
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 4.2:1).

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

✅ System fonts: Zero font loading delay — best possible LCP impact.

GGoogle Fonts

Color Palette

5 unique colors
Light
#ffffff
Background· 18%
#b0e0ea
Primary· 77.8%
#dbf1f5
Accent· 1.6%
#5798a3
Secondary· 1.4%
#8ec8d2
Secondary· 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

sylabs.io

8 years old
Location detected: 🇺🇸 United Statesvia ip
Key-Systems GmbH📧 Google Workspaceen

Sponsored

Last analyzed: 17 May 2026 at 02:10

Historical Analysis & Change Tracking