What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Back to Search

nasaspaceflight.com

https://nasaspaceflight.com· First analyzed 25 Apr 2026· Updated 25 Apr 2026

Export

nasaspaceflight.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.40.183

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

cody.ns.cloudflare.com.karina.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

658 ms10%

Speed Index

855 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.4 MB

82 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.8.5

cms

soledadv8.3.1Custom

by PenciDesign

View Theme

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

17 Technologies Detected

Plugins

Cookie Notice

Elementor

Penci Shortcodes

Wp Cloudflare Page Cache

Analytics

Advertising

Google Ads Google AdSense

Libraries

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

CDN

SEO Analysis

C67/100

Meta Tags4/15

Content11/12

Headings3/8

Technical23/25

E-E-A-T2/7

Images3/7

Links5/5

URL5/5

Social3/5

Freshness2/4

Mobile3/4

Indexability3/3

nasaspaceflight.comnasaspaceflight.com

NASASpaceFlight.com -

No description available for this page.

Title Length21 chars

Recommended: 50-60 chars (~126px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

13 URLs

13 sub-sitemaps

robots.txt

24 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

18/100

Poor

5 12

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

Sponsored

AI & LLM Readiness

D40/100

Bot Access

15/25

Machine Read.

6/25

Schema Data

8/25

Citation

11/25

AI Bot Access

6/14 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:5%

Words:3,531

Token eff.:Good

Sections/1K:2.3

Depth:1/5

Structured Data

6 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary

Descriptive Headingsavg 7.9w

Canonical URL

Open Graph1/3

Twitter Card1/3

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.

65/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

9/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

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

7/15

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.

39/100

458 mg

CO₂e / view

4.4 MB

Page Weight

15%

Cleaner Than

New Visitor

524 mg

Returning (cached)

262 mg

Annual (10K/mo)

55.0 kg

Emission Segments

Data Center

22 mg

Network

135 mg

Device

301 mg

Resource Breakdown

JavaScript

347.3 KB

Images

1.2 MB

CSS

2.8 MB

Fonts

5.1 KB

HTML

35.2 KB

Other

82.2 KB

Green Hosting Verified

Cloudflare

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

26%Critical

Interactive

HTTPS

WAF

36d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.03.2026

Valid Until

01.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

nasaspaceflight.com*.nasaspaceflight.com

SHA-256 Fingerprint

A5:62:DD:ED:43:BC:64:51:0F:D5:E8:0A:3E:22:5B:FA:72:DF:6A:2C...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

53153

cache-control

🟡 60s(s-maxage=31536000, max-age=60)

cf-cache-status

HIT

cf-ray🇮🇹 Milan

9f1c78c2cfb0ed5a-MXP

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx.l.google.com

alt3.aspmx.l.google.com

alt2.aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

nasaspaceflight.com

Domain Age

21y 11m

Created

06.05.2004

Expires

06.05.2027

Last Updated

06.04.2026

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Notice (WP)

Cookie Consent Banner

Cookie Notice (WP)

GDPR Indicators

Cookie consent banner detected

CMP: Cookie Notice (WP)

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.

77/100

Mobile Friendly6 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.

Viewport

width=device-width, initial-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Monda + Oxygen

WCAG Partial

57/100

Readability

/30

16/30

14px · LH 1.80

Hierarchy

/20

7/20

WCAG

/25

18/25

1:1 min contrast

Performance

/25

16/25

2 fonts · 5 req

Heading Font

Monda

Sans

Body Font

Oxygen

Sans14px

Contrast Ratio

1:1

15 issues

Reading Comfort

~44 CPL

Narrow lines

14px

20px

14px

Augmented Fourth

Scale

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

⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 1.0:1).

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

✅ 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 MyFontsFluid Type (rem)

Color Palette

12 unique colors

18.53:1 AAA Light

#ffffff

Primary· 28.1%

#141314

Text· 5.3%

#5e6672

Secondary· 7.7%

#7998b6

Secondary· 7.2%

#040507

Secondary· 6.1%

Business & Marketing Stack

4 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

nasaspaceflight.com(8)googletagmanager.com(4)pagead2.googlesyndication.com(3)youtube.com(2)platform.twitter.com(2)

Website Identity

NASASpaceFlight.com

Organization

www.nasaspaceflight.com/

21 years old

Location detected: 🇨🇦 Canadavia ip

Cloudflare, Inc.📧 Google Workspaceen-US

Social Profiles

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 25 Apr 2026 at 09:55

Historical Analysis & Change Tracking