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fei.com

https://fei.com· First analyzed 17 May 2026· Updated 17 May 2026
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fei.com
Desktop screenshot of fei.com
Mobile screenshot of fei.com
Mobile

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Hosting Provider

Opus Interactive

IP Address

216.151.18.55

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Rainier, United States

ASN

AS14380

Organization

Opus Interactive

CDN

Akamai

WAF

Akamai

Nameservers

pdns2.ultradns.net.pdns3.ultradns.org.pdns4.ultradns.org.pdns5.ultradns.info.+2 more

Performance

100

Core Web Vitals

Weight

First Contentful Paint
582 ms10%
Speed Index
757 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.9 MB
74 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Adobe Experience Manager

Technology Stack

3 Technologies Detected

Frameworks

1
Angular

CSS Frameworks

1
Tailwind CSS

Customer Support

1
Zendesk

SEO Analysis

B72/100
22
5
1
Meta Tags15/15
Content3/12
Headings8/8
Technical24/25
E-E-A-T0/7
Images5/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
F
fei.comfei.com

Electron microscopy | Thermo Fisher Scientific - FR

Discover Thermo Fisher Scientific electron microscopy solutions that enable nanoscale imaging for material, life sciences, and semiconductor analysis.

Title Length51 chars

Recommended: 50-60 chars (~306px / 580px)

Description Length150 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (26 words). Search engines need substantial content for ranking.

6 issues found

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Crawlability

Sitemap

Type: index

35 URLs

35 sub-sitemaps

robots.txt

29 rules

Sitemap reference found

Local SEO

Local Search Readiness

15/100
Poor
4 12 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

F35/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
1/25
Citation
7/25

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:1,423
Token eff.:Optimal

Structured Data

Microdata
BreadcrumbListmicrodata

Citation Readiness

Opening Summary
Descriptive Headings
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
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
10
Passed
4
Critical
1
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
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
12/15
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
6/15
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.
44/100
E
299 mg
CO₂e / view
2.9 MB
Page Weight
30%
Cleaner Than
New Visitor
342 mg
vs
Returning (cached)
171 mg
Annual (10K/mo)
35.9 kg
Emission Segments
Data Center
15 mg
Network
88 mg
Device
196 mg
Resource Breakdown
JavaScript
412.1 KB
Images
1.3 MB
CSS
1.2 MB
HTML
70.5 KB
Other
2.7 KB
Green Hosting Verified
Opus Interactive
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
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D

Security Score

51%Poor
Interactive

HTTPS

WAF

140d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.10.2025

Valid Until

04.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.thermofisher.comthermofisher.com

SHA-256 Fingerprint

69:4C:02:78:05:90:19:06:7F:41:BC:4D:37:5C:FD:7F:76:71:9D:3F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-language
en
cache-control
🔴 No Cache(max-age=0, no-cache, no-store)
content-encoding
📦 Gzip(gzip)
content-type
text/html;charset=utf-8
date
Sun, 17 May 2026 11:41:09 GMT
expires
Sun, 17 May 2026 11:41:09 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

68

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mxb-002a2102.gslb.pphosted.com
mxa-002a2102.gslb.pphosted.com

Domain Information

fei.com

Domain Age
32y 3m

Created

10.02.1994

Expires

11.02.2027

Last Updated

10.01.2025

Registrar

MarkMonitor Inc.

DNSSEC
Not Enabled

Privacy & Compliance

TrustArc

Cookie Consent Banner
TrustArc
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: TrustArc
Privacy policy page linked
Data Protection Officer 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.
C
67/100
Mobile Friendly65 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=1.0, maximum-scale=1.0, user-scalable=0
2 recommendations
  • •Mobile compatibility recommendation preview...
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Typography & Readability

HelveticaNeue

WCAG Partial
72/100
Readability
/30
20/30

16px · LH 1.63

Hierarchy
/20
17/20

3.12x ratio · ✓ H1→H6

WCAG
/25
17/25

1:1 min contrast

Performance
/25
18/25

1 font · 5 req

Heading Font

HelveticaNeue

Sans50px

Body Font

HelveticaNeue

Sans16px

Contrast Ratio

1:1

2 issues

Reading Comfort

~34 CPL

Narrow lines
50px
h1
26px
h2
16px
p

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

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 2 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 3.1x larger than body text.

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

Buy on MyFontsFluid Type (rem)Flesch 0

Color Palette

11 unique colors
17.76:1 AAA Light
#ffffff
Background· 21.2%
#181818
Text· 18.7%
#394c4f
Primary· 8.2%
#675a52
Secondary· 6%
#b9a68c
Secondary· 5.6%
#050404
Text· 5.3%
#603437
Secondary· 2.5%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
TrustArcEnterprise

Cookie consent and privacy compliance tools

2

Categories

2

Total Tools

1

Enterprise

0

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

29 Resources

20
Scripts
9
Styles
12
Async
3
Defer

Top Script Sources

local(10)assets.adobedtm.com(5)cdn.userway.org(2)thermofisher.com(1)consent.truste.com(1)

Website Identity

fei.com

32 years old
Location detected: 🇺🇸 United Statesvia ip
MarkMonitor Inc.fr

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Last analyzed: 17 May 2026 at 11:41

Historical Analysis & Change Tracking