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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bris.ac.uk

https://bris.ac.uk· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

bris.ac.uk

Mobile

Sponsored

Hosting Provider

University of Bristol

IP Address

137.222.125.159

Server Location

🇬🇧 Bristol, United Kingdom

ASN

AS786

Organization

University of Bristol

Server

Apache

Nameservers

ncs.bris.ac.uk.irix.bris.ac.uk.ns3.ja.net.

Performance

Page Speed

1.7 MB

61 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

University of Bristol

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://eu.gw.fortiabp.forticl...

Technology Stack

5 Technologies Detected

Analytics

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

B76/100

bris.ac.ukbris.ac.uk

Homepage | University of Bristol

Official university site with information on undergraduate and postgraduate courses, research, teaching, study and departments. Located in Bristol, in the So...

Description truncated.

Title Length33 chars

Recommended: 50-60 chars

Description Length356 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Crawlability

Sitemap

Type: index

3 URLs

robots.txt

56 rules

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

244d

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/1.1

Valid From

13.10.2025

Valid Until

15.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

www.bristol.ac.ukbris.ac.ukbristol.ac.ukwww.bris.ac.uk

SHA-256 Fingerprint

34:09:87:71:6D:07:6E:50:BA:A0:49:63:AC:3E:DC:EF:55:FD:0C:95...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-length

88676

content-type

text/html; charset=utf-8

date

Fri, 13 Feb 2026 21:02:35 GMT

etag

"159c9-64ab36ed922d6"

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

bris-ac-uk.mail.protection.outlook.com

Domain Information

bris.ac.uk

DNSSEC

Not Enabled

Privacy & Compliance

Termly

Cookie Consent Banner

Termly

GDPR Indicators

Cookie consent banner detected

CMP: Termly

Typography & Readability

Inter + sans-serif

88/100

Readability

/30

40/40

18px · LH 1.56

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Inter

Sans36px

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

~34 CPL

Needs attention

36px

56px

18px

Perfect Fifth

Scale

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

✅ Optimal line spacing: 1.56 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

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

⚠️ Cramped layout: 27 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

Privacy & Cookies

TermlySMB

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)app.termly.io(2)googletagmanager.com(1)eu.gw.fortiabp.forticloud.com(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn YouTube TikTok

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Last analyzed: 13 Feb 2026 at 21:02

Historical Analysis & Change Tracking