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keil.com

https://keil.com· First analyzed 28 Apr 2026· Updated 28 Apr 2026
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keil.com
Desktop screenshot of keil.com
Mobile screenshot of keil.com
Mobile

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Hosting Provider

ARM Ltd

IP Address

217.140.110.36

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Austin, United States

ASN

AS28939

Organization

ARM Ltd

Server

Microsoft IIS

Nameservers

ns10.arm.com.ns9.arm.com.

Performance

91

Core Web Vitals

Weight

First Contentful Paint
1.4 s10%
Speed Index
1.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
268 KB
35 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
ARM Ltd

Technology Stack

9 Technologies Detected

Frameworks

2
Angular
ASP.NET

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Google Analytics
Hotjar

Libraries

1
jQueryv1.11.0

Tag Managers

1
Google Tag Manager

Web Servers

1
Microsoft IISv8.5

SEO Analysis

D50/100
12
12
2
Meta Tags7/15
Content12/12
Headings5/8
Technical5/21
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
K
keil.comkeil.com

Keil Embedded Development Tools for Arm, Cortex-M, Cortex-R4, 8051,...

Keil makes C compilers, macro assemblers, real-time kernels, debuggers, simulators, integrated environments, evaluation boards, and emulators for the ARM, XC...

Title truncated. Description truncated.
Title Length101 chars

Recommended: 50-60 chars (~605px / 580px)

Description Length378 chars

Recommended: 120-160 chars

Issues (2)

  • • Title is too long (101 chars, ~605px). Will be truncated in search results.
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

14 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

F39/100
Bot Access
20/25
Machine Read.
9/25
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
Text ratio:14%
Words:569
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary50w
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 (9)
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.
C
65/100
8
Passed
5
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
8/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
12/15
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.
3 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.
51/100
A+
33 mg
CO₂e / view
267.5 KB
Page Weight
90%
Cleaner Than
New Visitor
38 mg
vs
Returning (cached)
19 mg
Annual (10K/mo)
4.0 kg
Emission Segments
Data Center
7 mg
Network
8 mg
Device
18 mg
Resource Breakdown
JavaScript
105.5 KB
Images
83.1 KB
CSS
71.7 KB
HTML
7.1 KB
Green Hosting Not Verified
ARM Ltd
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

36%Critical
Interactive

HTTPS

No WAF

286d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

07.01.2026

Valid Until

08.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (3)

www.keil.comwww2.keil.comkeil.com

SHA-256 Fingerprint

65:2D:A0:CC:F8:72:0A:1A:10:E8:0A:FF:F9:3A:25:E8:AB:34:99:09...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-expose-headers
Server-Timing
cache-control
🟣 Private(private)
connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-length
7008
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

50

SPF
DKIM
DMARC

MX Records (1)

keil-com.mail.protection.outlook.com

Domain Information

keil.com

Domain Age
30y 9m

Created

27.07.1995

Expires

26.07.2026

Last Updated

21.07.2025

Registrar

Nom-iq Ltd. dba COM LAUDE

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
F
33/100
Not 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.
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Helvetica Neue

WCAG Partial
59/100
Readability
/30
16/30

14px · LH 1.60

Hierarchy
/20
10/20

2x ratio

WCAG
/25
14/25

2.29:1 min contrast

Performance
/25
19/25

System fonts

Heading Font

Helvetica Neue

Sans28px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

2.29:1

3 issues

Reading Comfort

~89 CPL

Wide lines
28px
h1
14px
h4
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Wide lines: ~89 chars/line. Use max-width: 65ch for comfortable reading.

❌ Very complex text: Flesch score 25/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 2.3:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

Flesch 25

Color Palette

7 unique colors
Light
#e8e8e8
Background· 29.599999999999998%
#171a1f
Secondary· 12.5%
#188faf
Primary· 10.9%
#38505a
Secondary· 6.9%
#b9b19e
Secondary· 6.9%

Business & Marketing Stack

4 Tools Detected

Enterprise

Marketing Automation

1
MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

3
Google Tag ManagerFree
Google AnalyticsFree
HotjarMid-Market

User behavior and product analytics

2

Categories

4

Total Tools

1

Enterprise

1

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

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Scripts & Styles

22 Resources

18
Scripts
4
Styles
5
Async
0
Defer

Top Script Sources

local(11)code.jquery.com(2)munchkin.marketo.net(1)static.hotjar.com(1)google-analytics.com(1)

Website Identity

keil.com

30 years old
Location detected: 🇺🇸 United Statesvia ip
Nom-iq Ltd. dba COM LAUDE📧 Microsoft 365

Sponsored

Last analyzed: 28 Apr 2026 at 10:56

Historical Analysis & Change Tracking