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

gratisography.com

https://gratisography.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

gratisography.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

188.114.96.3

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

CloudFlare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

miki.ns.cloudflare.com.cleo.ns.cloudflare.com.

Performance

Page Speed

1.4 MB

42 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.8.3

cms

gratis-v3Custom

Technology Stack

14 Technologies Detected

Analytics

CSS Frameworks

Plugins

Libraries

Icon Libraries

Fonts

Tag Managers

Email Marketing

Other

CDN

SEO Analysis

A88/100

gratisography.comgratisography.com

Gratisography - Free High-Resolution Stock Photos

The world's quirkiest collection of free high-resolution pictures you can use on your personal and commercial projects. All completely free of copyright rest...

Description truncated.

Title Length49 chars

Recommended: 50-60 chars

Description Length195 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

7 URLs

robots.txt

12 rules

Sponsored

Security Score

41%Poor

Interactive

HTTPS

WAF

50d

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+H3

Valid From

09.01.2026

Valid Until

09.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

gratisography.com*.gratisography.com

SHA-256 Fingerprint

6D:E4:22:14:B4:0E:2A:E7:60:34:BB:A8:E8:E5:1E:AC:A3:2F:D0:42...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9cf9ebc5e9f603b8-FRA

content-encoding

zstd

content-type

text/html; charset=UTF-8

date

Wed, 18 Feb 2026 01:58:42 GMT

Good Warning Issue

Email Infrastructure

Proton Mail

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.protonmail.ch

Domain Information

gratisography.com

Domain Age

12y 3m

Created

24.10.2013

Expires

24.10.2026

Last Updated

24.09.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Lato

40/100

Readability

/30

32/40

20px · LH 1.33

Hierarchy

/20

8/25

0.9x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Lato

Sans18px

Body Font

Lato

Sans20px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

18px

45px

32px

20px

Golden Ratio

Scale

✅ Excellent readability: 20px body text is ideal for all devices.

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

✅ Good performance: Using 2 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Risky: Text appears on background images without overlay protection.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

4 Tools Detected

Advanced

Marketing Automation

MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

HotjarMid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

gratisography.com(7)googletagmanager.com(3)google-analytics.com(1)googleoptimize.com(1)static.hotjar.com(1)

Website Identity

X (Twitter)Instagram

Sponsored

Last analyzed: 18 Feb 2026 at 01:58

Historical Analysis & Change Tracking