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.

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depositphotos.com

https://depositphotos.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

depositphotos.com

Mobile

Sponsored

Hosting Provider

Depositphotos inc

IP Address

135.84.52.6

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS35415

Organization

Depositphotos inc

Nameservers

ns3.depositphotos.com.ns1.depositphotos.com.ns2.depositphotos.com.

Performance

Page Speed

8 KB

86 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Depositphotos inc

Technology Stack

5 Technologies Detected

Analytics

Tag Managers

Security

SEO Analysis

B74/100

depositphotos.comdepositphotos.com

Royalty-free Images, Photo Stock, Video & Music | DepositPhotos

Royalty-free stock images at affordable prices on DepositPhotos. Download stock photos for commercial use. Pictures, videos, music for every topic.

Title Length63 chars

Recommended: 50-60 chars

Description Length147 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

36,877 URLs

robots.txt

33 rules

Allows all crawlers

Sponsored

Security Score

86%Very Good

Interactive

HTTPS

No WAF

283d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

22.10.2025

Valid Until

22.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.depositphotos.comdepositphotos.com

SHA-256 Fingerprint

DA:38:71:19:A5:BB:49:19:12:B5:3C:ED:3D:6E:D6:C6:92:71:14:51...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store)

connect-src

child-src ; media-src ;

content-encoding

📦 Gzip(gzip)

content-language

content-security-policy

default-src 'self' *.depositphotos.com depositphotos.com; sc...

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Mimecast

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

eu-smtp-inbound-2.mimecast.com

eu-smtp-inbound-1.mimecast.com

Domain Information

depositphotos.com

Domain Age

17 years

Created

07.02.2009

Expires

07.02.2030

Last Updated

25.11.2025

Registrar

Moniker Online Services LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

arial

62/100

Readability

/30

32/40

18px · LH 1.33

Hierarchy

/20

20/25

1.78x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

arial

Sans32px

Body Font

arial

Sans18px

Contrast Ratio

Reading Comfort

~43 CPL

Needs attention

32px

20px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Good hierarchy: Clear distinction between headlines and body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

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

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

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)google-analytics.com(1)ssl.google-analytics.com(1)webst.depositphotos.com(1)accounts.google.com(1)

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Last analyzed: 12 Feb 2026 at 15:02

Historical Analysis & Change Tracking