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

bas.bg

https://bas.bg· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

bas.bg

Sponsored

Hosting Provider

Institut Geofizika

IP Address

213.191.221.71

Server Location

🇧🇬 Sofia, Bulgaria

ASN

AS8745

Organization

Institut Geofizika

Server

Nginx

Nameservers

ns1.bas.bg.ns.bas.bg.ns2.bas.bg.

Performance

Page Speed

20.4 MB

124 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Institut Geofizika

Detected API Sources

https://maps.google.com/maps/a...

Technology Stack

18 Technologies Detected

Plugins

Wordpress Popular Posts

Wp Media Folder Layerslider Wp Google Map Gold

UI Components

Swiper Slick Carousel Lightbox

Libraries

Other

Other

CSS Frameworks

Icon Libraries

Web Servers

SEO Analysis

D47/100

bas.bgbas.bg

Българска академия на науките – Официален сайт на Българската акаде...

No description available for this page.

Title truncated.

Title Length81 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1
• Many images missing alt text (30/34)

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

12 rules

Sponsored

Security Score

26%Critical

Interactive

HTTPS

No WAF

67d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.01.2026

Valid Until

26.04.2026

Subject Alternative Names (2)

bas.bgwww.bas.bg

SHA-256 Fingerprint

47:9E:0B:A6:C9:E0:C7:74:1B:A2:FE:D2:50:12:BB:DE:09:58:24:0E...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-type

text/html; charset=UTF-8

date

Wed, 18 Feb 2026 02:03:14 GMT

link

<https://www.bas.bg/index.php?rest_route=/>; rel="https://ap...

permissions-policy

private-state-token-redemption=(self "https://www.google.com...

server

nginx/1.22.1

x-tec-api-origin

https://www.bas.bg

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

argo.bas.bg

pmx.bas.bg

Domain Information

bas.bg

DNSSEC

Not Enabled

Typography & Readability

Simbal Regular

49/100

Readability

/30

20/40

12px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Simbal Regular

Sans

Body Font

Simbal Regular

Sans12px

Contrast Ratio

Reading Comfort

~54 CPL

Optimal (45–75)

24px

20px

16px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

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

✅ Optimal line length: ~54 characters per line is comfortable to read.

⚠️ Cramped layout: 53 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

bas.bg(19)maps.google.com(1)

Website Identity

Facebook X (Twitter)Instagram

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Last analyzed: 18 Feb 2026 at 02:03

Historical Analysis & Change Tracking