StackOptic
Back to Search
gasum.com favicon

gasum.com

https://gasum.com· First analyzed 24 May 2026· Updated 24 May 2026
Export
gasum.com
Desktop screenshot of gasum.com
Mobile screenshot of gasum.com
Mobile

Sponsored

Hosting Provider

Episerver AB

IP Address

217.114.94.2

Site Location

🇸🇪 Swedenvia ip

Server Location

🇸🇪 Stockholm, Sweden

ASN

AS30811

Organization

Episerver AB

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-cloud-d4.googledomains.com.ns-cloud-d1.googledomains.com.ns-cloud-d3.googledomains.com.ns-cloud-d2.googledomains.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
420 ms10%
Speed Index
546 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3.4 MB
51 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Episerver AB
CDN
Cloudflare

Technology Stack

4 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

CDN

1
Cloudflare

SEO Analysis

C66/100
21
5
2
Meta Tags10/15
Content8/12
Headings8/8
Technical17/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
G
gasum.comgasum.com

Gasum - Your partner in the energy transition | Gasum

No description available for this page.

Title Length53 chars

Recommended: 50-60 chars (~331px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (26/50) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

10/100
Poor
3 13 2

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

Sponsored

AI & LLM Readiness

F35/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
8/25

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:6%
Words:2,893
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary227w
Descriptive Headings
Canonical URL
Open Graph2/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
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.
A
82/100
13
Passed
2
Critical
1
Warnings
Images & Alt Text
20/20
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
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
23/100
F
431 mg
CO₂e / view
3.4 MB
Page Weight
15%
Cleaner Than
New Visitor
492 mg
vs
Returning (cached)
246 mg
Annual (10K/mo)
51.7 kg
Emission Segments
Data Center
96 mg
Network
103 mg
Device
231 mg
Resource Breakdown
JavaScript
99.1 KB
Images
3.0 MB
CSS
283.7 KB
HTML
10.2 KB
Other
4.6 KB
Green Hosting Not Verified
Episerver AB
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Interactive

HTTPS

WAF

107d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Entrust Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

13.08.2025

Valid Until

08.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

gasum.com*.gasum.com

SHA-256 Fingerprint

2C:14:29:57:43:16:4F:92:5E:30:93:E8:9F:AF:9C:1E:D9:70:4B:23...

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cache-control
🔴 No Cache(no-cache,no-store)
cf-cache-status
DYNAMIC
cf-ray🇮🇹 Milan
a00becbb4d7a59a7-MXP
content-encoding
📦 Gzip(gzip)
content-security-policy
default-src 'self'; script-src 'self' 'unsafe-inline' 'unsaf...
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

gasum-com.mail.protection.outlook.com

Domain Information

gasum.com

Domain Age
27y 2m

Created

15.03.1999

Expires

15.03.2027

Last Updated

16.06.2022

Registrar

CSL Computer Service Langenbach GmbH d/b/a joker.com

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot
Privacy policy page linked
Data Protection Officer mentioned
Legitimate interest basis mentioned

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
78/100
Mobile Friendly24 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, initial-scale=1
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Montserrat

WCAG Partial
78/100
Readability
/30
21/30

16px · LH 1.63

Hierarchy
/20
19/20

4.12x ratio · ✓ H1→H6

WCAG
/25
18/25

1:1 min contrast

Performance
/25
20/25

1 font · 3 req

Heading Font

Montserrat

Sans66px

Body Font

Montserrat

Sans16px

Contrast Ratio

1:1

6 issues

Reading Comfort

~38 CPL

Narrow lines
66px
h1
50px
h2
24px
h3
20px
h4
16px
p

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

⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 4.1x larger than body text.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Buy on MyFontsFluid Type (rem)Flesch 38

Color Palette

8 unique colors
4.76:1 AA Light
#ffffff
Background· 54.9%
#707378
Other· 3.6%
#15130d
Secondary· 13.600000000000001%
#2c261a
Primary· 7.7%
#132983
Accent· 4.5%
#3c4051
Secondary· 4.5%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
CookiebotMid-Market

Cookie consent and privacy compliance tools

2

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

7 Resources

6
Scripts
1
Styles
3
Async
1
Defer

Top Script Sources

consent.cookiebot.com(2)local(2)googletagmanager.com(1)js.monitor.azure.com(1)

Website Identity

gasum.com

27 years old
Location detected: 🇸🇪 Swedenvia ip
CSL Computer Service Langenbach GmbH d/b/a joker.com📧 Microsoft 365en

Social Profiles

FacebookLinkedIn

Sponsored

Last analyzed: 24 May 2026 at 11:23

Historical Analysis & Change Tracking