w3c.br

https://w3c.br· First analyzed 31 May 2026· Updated 31 May 2026

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w3c.br

Mobile

Sponsored

Hosting Provider

Núcleo de Inf. e Coord. do Ponto BR - NIC.BR

IP Address

200.160.4.153

Site Location

🇧🇷 Brazilvia tld

Server Location

🇧🇷 São Paulo, Brazil

ASN

AS22548

Organization

Núcleo de Inf. e Coord. do Ponto BR - NIC.BR

Server

Apache

Nameservers

c.dns.br.a.dns.br.e.dns.br.d.dns.br.+1 more

Performance

Core Web Vitals

Weight

First Contentful Paint

1.7 s10%

Speed Index

2.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.5 MB

29 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.0.2

Infrastructure

Hosting

Núcleo de Inf. e Coord. do Ponto BR - NIC.BR

Technology Stack

7 Technologies Detected

CSS Frameworks

Libraries

Icon Libraries

Fonts

Web Servers

Plugins

SEO Analysis

B76/100

Meta Tags15/15

Content10/12

Headings3/8

Technical20/25

E-E-A-T2/7

Images4/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

w3c.brw3c.br

Consórcio World Wide Web (W3C) - Capítulo São Paulo

O Consórcio World Wide Web (W3C) é uma comunidade internacional que desenvolve padrões com o objetivo de garantir o crescimento da web.

Title Length51 chars

Recommended: 50-60 chars (~316px / 580px)

Description Length135 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

13/100

Poor

4 13

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

D52/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

6/25

Citation

16/25

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

nav

Text ratio:7%

Words:572

Token eff.:Optimal

Sections/1K:26.2

Depth:1/5

Structured Data

2 JSON-LD

Organization×1.1WebSiteSearchAction

Citation Readiness

Opening Summary25w

Descriptive Headingsavg 9.7w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

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.

79/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

Semantic Structure

13/20

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

13/15

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

ARIA & Roles

5/15

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.

31/100

318 mg

CO₂e / view

2.5 MB

Page Weight

30%

Cleaner Than

New Visitor

363 mg

Returning (cached)

182 mg

Annual (10K/mo)

38.1 kg

Emission Segments

Data Center

71 mg

Network

76 mg

Device

171 mg

Resource Breakdown

JavaScript

8.8 KB

Images

2.0 MB

CSS

475.4 KB

Fonts

4.4 KB

HTML

51.0 KB

Green Hosting Not Verified

Núcleo de Inf. e Coord. do Ponto BR - NIC.BR

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

61%Fair

Interactive

HTTPS

No WAF

76d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

18.05.2026

Valid Until

16.08.2026

Subject Alternative Names (3)

conferenciaweb.w3c.brw3c.brwww.w3c.br

SHA-256 Fingerprint

9F:4D:F2:AE:DE:D3:6F:B7:E5:D3:A4:F7:A1:FF:8E:E2:74:31:FB:08...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

connection

Upgrade, Keep-Alive

content-length

51939

content-type

text/html

date

Sun, 31 May 2026 10:49:35 GMT

etag

"cae3-6390786878cdb"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

w3c.br

Domain Age

18y 7m

Created

29.10.2007

Last Updated

02.04.2018

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.

68/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Tahoma + Open Sans

WCAG Partial

59/100

Readability

/30

18/30

14px · LH 1.65

Hierarchy

/20

8/20

WCAG

/25

17/25

2.74:1 min contrast

Performance

/25

16/25

2 fonts · 4 req

Heading Font

Tahoma

Sans

Body Font

Open Sans

Sans14px

Contrast Ratio

2.74:1

4 issues

Reading Comfort

~44 CPL

Narrow lines

36px

14px

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

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

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 2.7:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle Fonts Buy on MyFontsFlesch 0

Color Palette

8 unique colors

Light

#ffffff

Background· 37.2%

#024c89

Primary· 34.7%

#1f4d75

Accent· 8.4%

#1d6297

Accent· 7.2%

#a33588

Accent· 4.7%

#b1ddb9

Secondary· 3.4%

#4d789b

Secondary· 3.4%

#e8fff6

Accent· 0.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)wp-includes(1)

Website Identity

W3C Capítulo São Paulo

Organization

[email protected]

18 years old

Location detected: 🇧🇷 Brazilvia tld

pt-BR

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 31 May 2026 at 10:50

Historical Analysis & Change Tracking