stackapps.com

https://stackapps.com· First analyzed 17 May 2026· Updated 17 May 2026

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stackapps.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

198.252.206.1

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 New York, United States

ASN

AS13335

Organization

Stack Exchange, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

damian.ns.cloudflare.com.sureena.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

339 ms10%

Speed Index

441 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

30 KB

35 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

6 Technologies Detected

Libraries

Analytics

CSS Frameworks

CDN

SEO Analysis

C62/100

Meta Tags5/15

Content11/12

Headings3/8

Technical21/25

E-E-A-T2/7

Images1/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile1/4

Indexability3/3

stackapps.comstackapps.com

Stack Apps

Q&A for apps, scripts, and development with the Stack Exchange API

Title Length10 chars

Recommended: 50-60 chars (~62px / 580px)

Description Length66 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (14/16) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

189 rules

Sitemap reference found

Local SEO

Local Search Readiness

16/100

Poor

4 14

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D53/100

Bot Access

21/25

Machine Read.

9/25

Schema Data

6/25

Citation

17/25

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:6%

Words:1,197

Token eff.:Optimal

Sections/1K:14.2

Depth:1/5

Structured Data

3 JSON-LD

Organization×1.1WebSite

sameAs entity links

Citation Readiness

Opening Summary40w

Descriptive Headingsavg 7.4w

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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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.

86/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

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

11/15

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

ARIA & Roles

10/15

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.

68/100

A+

3 mg

CO₂e / view

29.5 KB

Page Weight

95%

Cleaner Than

New Visitor

3 mg

Returning (cached)

2 mg

Annual (10K/mo)

360 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

2 mg

Resource Breakdown

Images

7.3 KB

HTML

22.2 KB

Green Hosting Verified

Cloudflare

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

50%Poor

Critical / Transactional

HTTPS

WAF

62d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

19.04.2026

Valid Until

18.07.2026

Subject Alternative Names (3)

*.meta.stackapps.com*.stackapps.comstackapps.com

SHA-256 Fingerprint

B0:05:C9:1E:8D:12:A5:AE:51:5A:31:00:F3:6B:C9:59:CC:59:1F:F0...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟣 Private(private)

cf-cache-status

DYNAMIC

cf-ray🇮🇹 Milan

9fd001fb8e79ee7a-MXP

content-encoding

📦 Gzip(gzip)

content-security-policy

upgrade-insecure-requests; frame-ancestors 'self' https://st...

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

Domain Information

stackapps.com

Domain Age

16y 1m

Created

30.03.2010

Expires

30.03.2027

Last Updated

26.03.2026

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

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.

69/100

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, height=device-height, initial-scale=1.0, minimum-scale=1.0

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

68/100

Readability

/30

19/30

15px · LH 1.31

Hierarchy

/20

11/20

1.8x ratio

WCAG

/25

16/25

1:1 min contrast

Performance

/25

22/25

System fonts

Heading Font

-apple-system

Sans27px

Body Font

-apple-system

Sans15px

Contrast Ratio

1:1

4 issues

Reading Comfort

~52 CPL

Optimal (45–75)

27px

15px

19px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.31). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~52 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

Fluid TypeFlesch 35

Color Palette

7 unique colors

18.06:1 AAA Light

#ffffff

Background· 69.1%

#161619

Text· 5.5%

#9fb3c2

Primary· 7.3%

#e4e9eb

Secondary· 7.3%

#5a6674

Secondary· 5.2%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

stackapps.com(14)cdn.cookielaw.org(2)local(2)ajax.googleapis.com(1)accounts.google.com(1)

Website Identity

Stack Overflow

Organization

Q&A for professional and enthusiast programmers

stackoverflow.com

16 years old

Location detected: 🇺🇸 United Statesvia ip

CSC Corporate Domains, Inc.en

Social Profiles

Facebook X (Twitter)Instagram LinkedIn

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Last analyzed: 17 May 2026 at 04:52

Historical Analysis & Change Tracking