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

go.to

https://go.to· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

go.to

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

34.226.0.88

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-726.awsdns-26.net.ns-1074.awsdns-06.org.ns-1794.awsdns-32.co.uk.ns-451.awsdns-56.com.

Performance

Page Speed

1.5 MB

108 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

HubSpot CMS

Technology Stack

15 Technologies Detected

Analytics

Libraries

UI Components

CSS Frameworks

Tag Managers

Marketing

Customer Support

Advertising

Other

CDN

SEO Analysis

B70/100

go.togo.to

Team Messenger & Online Collaboration Platform – Flock

Flock, the best team communication app and online collaboration platform, comes with team messaging, project management and other great features that improve...

Description truncated.

Title Length54 chars

Recommended: 50-60 chars

Description Length200 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (21/36)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

6 rules

Sponsored

Security Score

76%Good

Interactive

HTTPS

WAF

88d

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

18.02.2026

Valid Until

19.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.flock.com

SHA-256 Fingerprint

8D:0D:1C:32:9C:1A:92:4C:0F:E0:B0:4B:AA:CE:35:80:6C:1F:89:A9...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 5s(s-maxage=36000, max-age=5)

cf-ray🇩🇪 Frankfurt

9d05893ccd0e49bb-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

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

content-security-policy-report-only

script-src 'none'; report-uri https://csp-reporting.cloudfla...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mx1.titan.email

mx2.titan.email

Domain Information

go.to

Domain Age

13y 5m

Created

31.08.2012

Expires

31.08.2027

Last Updated

15.07.2024

Registrar

Government of Kingdom of Tonga

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

dm-serif + dm-sans-regular

56/100

Readability

/30

32/40

20px · LH 1.30

Hierarchy

/20

18/25

3x ratio

WCAG

/25

11/15

Contrast: undefined

Performance

/25

10/20

4 fonts

Heading Font

dm-serif

Serif60px

Body Font

dm-sans-regular

Sans20px

Contrast Ratio

Reading Comfort

~102 CPL

Needs attention

60px

42px

32px

24px

20px

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

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

⚠️ Wide lines: ~102 chars/line. Consider max-width for better reading flow.

⚠️ Cramped layout: 64 elements lack adequate spacing.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Business & Marketing Stack

9 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Customer Support

ZendeskEnterprise

Live chat and helpdesk tools

Behavior Analytics

HotjarMid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

google-analytics.com(3)googletagmanager.com(2)connect.facebook.net(2)js-na1.hs-scripts.com(1)js.hs-analytics.net(1)

Website Identity

Facebook X (Twitter)

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Last analyzed: 19 Feb 2026 at 11:48

Historical Analysis & Change Tracking