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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opera.com

https://opera.com· First analyzed 10 Feb 2026· Updated 10 Feb 2026

Export

opera.com

Mobile

Sponsored

Hosting Provider

Opera Software

IP Address

185.26.182.103

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS39832

Organization

Opera Software

Nameservers

nic1.opera.com.nic6.opera.com.nic3.opera.com.nic4.opera.com.+1 more

Performance

Page Speed

52 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Opera Software

Technology Stack

7 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

CSS Frameworks

Tailwind CSS

Tag Managers

Google Tag Manager

Advertising

Microsoft Advertising

SEO Analysis

A+96/100

opera.comopera.com

Opera Web Browser | Faster, Safer, Smarter | Opera

Faster, safer and smarter than default browsers. Fully-featured for privacy, security, and so much more. Get the faster, better Opera browser for free.

Title Length50 chars

Recommended: 50-60 chars

Description Length151 chars

Recommended: 120-160 chars

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Security Score

84%Very Good

Interactive

HTTPS

No WAF

167d

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 1 Hours(max-age=3600)

content-encoding

📦 Gzip(gzip)

content-language

content-length

29530

content-security-policy

frame-ancestors 'self' https://*.opera.com; upgrade-insecure...

Good Warning Issue

Typography & Readability

roboto

76/100

Readability

/30

30/40

28px · LH --

Hierarchy

/20

25/25

2.8x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

roboto

Sans79px

Body Font

roboto

Sans28px

Contrast Ratio

Reading Comfort

~42 CPL

Needs attention

79px

24px

45px

28px

Minor Second

Scale

✅ Excellent readability: 28px body text is ideal for all devices.

✅ Strong hierarchy: Headlines are 2.8x larger than body text.

✅ Good performance: Using 1 font families keeps load times fast.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 17 elements lack adequate spacing.

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Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

18 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn-production-opera-website.operacdn.com(5)googletagmanager.com(3)

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Last analyzed: 10 Feb 2026 at 18:41

Historical Analysis & Change Tracking