webauthn.guide

https://webauthn.guide· First analyzed 21 May 2026· Updated 21 May 2026

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webauthn.guide

Mobile

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Hosting Provider

GitHub Pages

pages.github.com

IP Address

185.199.110.153

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

GitHub, Inc

Server

GitHub.com

CDN

Fastly

Nameservers

ns-983.awsdns-58.net.ns-1241.awsdns-27.org.ns-13.awsdns-01.com.ns-1682.awsdns-18.co.uk.

Performance

Core Web Vitals

Weight

First Contentful Paint

722 ms10%

Speed Index

939 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

508 KB

41 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Platform

GitHub Pages

CDN

Fastly

Technology Stack

3 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

CSS Frameworks

Tailwind CSS

SEO Analysis

D56/100

Meta Tags8/15

Content10/12

Headings8/8

Technical10/21

E-E-A-T0/7

Images1/7

Links2/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

webauthn.guidewebauthn.guide

Guide to Web Authentication

An introduction to Web Authentication (WebAuthn), the new API that can replace passwords with strong authentication.

Title Length27 chars

Recommended: 50-60 chars (~166px / 580px)

Description Length116 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (33/36) — critical for accessibility and SEO

9 issues found

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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

D41/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

11/25

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

code blocksnav

Text ratio:25%

Words:3,274

Token eff.:Good

Sections/1K:3.4

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary73w

Descriptive Headingsavg 4.5w

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.

78/100

Passed

Critical

Warnings

Images & Alt Text

18/20

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

Semantic Structure

15/20

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

9/15

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.

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.

48/100

63 mg

CO₂e / view

507.6 KB

Page Weight

90%

Cleaner Than

New Visitor

72 mg

Returning (cached)

36 mg

Annual (10K/mo)

7.5 kg

Emission Segments

Data Center

14 mg

Network

15 mg

Device

34 mg

Resource Breakdown

JavaScript

285.5 KB

Images

144.9 KB

CSS

63.5 KB

HTML

13.7 KB

Green Hosting Not Verified

GitHub Pages

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

58d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

19.04.2026

Valid Until

18.07.2026

Subject Alternative Names (2)

webauthn.guidewww.webauthn.guide

SHA-256 Fingerprint

31:14:EB:51:E7:5E:AB:31:48:01:14:60:08:7F:60:9C:8F:A4:79:FA...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-origin

age

cache-control

🟡 600s(max-age=600)

content-encoding

📦 Gzip(gzip)

content-length

13756

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

webauthn.guide

Domain Age

7y 9m

Created

17.08.2018

Expires

17.08.2026

Last Updated

19.04.2025

Registrar

MarkMonitor Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

63/100

Mobile Friendly

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Quicksand + Roboto Slab

WCAG AA

73/100

Readability

/30

22/30

14px · LH 1.50

Hierarchy

/20

16/20

7.86x ratio · ✓ H1→H6

WCAG

/25

22/25

5.6:1 min contrast

Performance

/25

13/25

2 fonts · 4 req

Heading Font

Quicksand

Sans110px

Body Font

Roboto Slab

Sans14px

Contrast Ratio

5.6:1

WCAG AA (≥4.5:1)

Reading Comfort

~44 CPL

Narrow lines

110px

72px

48px

24px

14px

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.6:1).

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

✅ Strong hierarchy: Headlines are 7.9x larger than body text.

Buy on MyFontsFlesch 37

Color Palette

10 unique colors

2.43:1 Fail Light

#ffffff

Background· 82%

#a5a6aa

Other· 1.4%

#d4d3f7

Primary· 3.9000000000000004%

#73b6e0

Accent· 3.4%

#497aaf

Secondary· 2.8%

#777bbe

Secondary· 1.8%

#589da4

Secondary· 1.5%

#b7c7d9

Secondary· 1.4%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)local(2)fast.wistia.com(2)google-analytics.com(1)browser.sentry-cdn.com(1)

Website Identity

webauthn.guide

7 years old

Location detected: 🇺🇸 United Statesvia ip

MarkMonitor Inc.en

Social Profiles

X (Twitter)GitHub

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Last analyzed: 21 May 2026 at 00:51

Historical Analysis & Change Tracking