circuitcalculator.com

https://circuitcalculator.com· First analyzed 15 Jun 2026· Updated 15 Jun 2026

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Mobile

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Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.21.34.122

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

clyde.ns.cloudflare.com.stevie.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

315 ms10%

Speed Index

410 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.1 MB

55 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Platform

Railway

CDN

Cloudflare

Technology Stack

4 Technologies Detected

CSS Frameworks

Fonts

Advertising

CDN

SEO Analysis

D53/100

Meta Tags9/15

Content9/12

Headings6/8

Technical14/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

circuitcalculator.comcircuitcalculator.com

site:circuitcalculator.com - Google Search

No description available for this page.

Title Length42 chars

Recommended: 50-60 chars (~248px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Most images missing alt text (6/9) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

13 issues found

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Crawlability

Sitemap

Type: index

21 URLs

21 sub-sitemaps

robots.txt

251 rules

Sitemap reference found

Local SEO

Local Search Readiness

11/100

Poor

4 11 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

F34/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

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:1%

Words:527

Token eff.:Optimal

Structured Data

Microdata

Citation Readiness

Opening Summary

Descriptive Headingsavg 4.4w

Canonical URL

Open Graph0/3

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.

89/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

16/20

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

15/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

8/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•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.

59/100

111 mg

CO₂e / view

1.1 MB

Page Weight

70%

Cleaner Than

New Visitor

127 mg

Returning (cached)

63 mg

Annual (10K/mo)

13.3 kg

Emission Segments

Data Center

5 mg

Network

33 mg

Device

73 mg

Resource Breakdown

JavaScript

70.0 KB

Images

18.7 KB

CSS

75.2 KB

HTML

73.0 KB

Other

859.8 KB

Green Hosting Verified

Cloudflare

GWF Verified

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

26%Critical

Interactive

HTTPS

WAF

62d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

25.05.2026

Valid Until

17.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.google.com

SHA-256 Fingerprint

89:E7:1C:0C:0C:06:93:03:01:9D:4C:88:38:E6:90:88:D7:13:F0:A3...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇺🇸 Washington DC

a0c329c0dce76ac7-IAD

content-encoding

zstd

content-type

text/html; charset=utf-8

date

Mon, 15 Jun 2026 17:06:03 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx.circuitcalculator.com

Domain Information

circuitcalculator.com

Domain Age

21y 10m

Created

20.08.2004

Expires

20.08.2027

Last Updated

13.08.2025

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

39/100

Not Mobile Friendly61 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.

5 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto

WCAG AA

67/100

Readability

/30

15/30

14px · LH --

Hierarchy

/20

10/20

1x ratio

WCAG

/25

22/25

4.65:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Roboto

Sans14px

Body Font

Roboto

Sans14px

Contrast Ratio

4.65:1

WCAG AA (≥4.5:1)

Reading Comfort

Single Font Family

left aligned

14px

21px

20px

Major Third

Scale

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

❌ Very complex text: Flesch score 2/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.7:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

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

Flesch 2

Color Palette

7 unique colors

2.17:1 Fail Light

#ffffff

Background· 88.99999999999999%

#aeb0b6

Other· 2.2%

#838bb2

Primary· 1.4%

#e4dbf0

Secondary· 1.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(15)gstatic.com(1)

Website Identity

circuitcalculator.com

21 years old

Location detected: 🇨🇦 Canadavia ip

Cloudflare, Inc.en

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Last analyzed: 15 Jun 2026 at 17:06

Historical Analysis & Change Tracking