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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calcalistech.com

https://calcalistech.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

calcalistech.com

Sponsored

Hosting Provider

YEDIOT

IP Address

192.115.80.55

Server Location

🇮🇱 Nof Ayalon, Israel

ASN

AS12619

Nameservers

nypop.netvision.net.il.dns.netvision.net.il.eupop.netvision.net.il.

Performance

Page Speed

785 KB

221 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

YEDIOT

Technology Stack

12 Technologies Detected

Advertising

Google Ads Criteo Taboola Outbrain

Analytics

Libraries

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

SEO Analysis

B78/100

calcalistech.comcalcalistech.com

CTech | Ctech

CTech - Israeli Tech and Start up News

Title Length13 chars

Recommended: 50-60 chars

Description Length40 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

34 rules

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

222d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

30.09.2025

Valid Until

30.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

qa.vesty.co.il*.calcalist.co.il*.calcalistech.com*.frogi.co.il*.mynet.co.il*.poweredby.yit.co.il*.vesty.co.il*.winwin.co.il+12 more

SHA-256 Fingerprint

4E:F5:0D:BA:E3:E7:D4:6C:04:14:C5:F2:B9:DC:F5:24:28:A1:22:CF...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-origin

https://m.calcalistech.com

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

43082

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

calcalistech-com.mail.protection.outlook.com

Domain Information

calcalistech.com

Domain Age

8y 10m

Created

06.04.2017

Expires

06.04.2027

Last Updated

11.02.2025

Registrar

Domain The Net Technologies Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis mentioned

Typography & Readability

Open Sans + sans-serif

61/100

Readability

/30

12/40

12px · LH 1.33

Hierarchy

/20

20/25

1.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Open Sans

Sans18px

Body Font

sans-serif

Sans12px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

18px

14px

28px

12px

Augmented Fourth

Scale

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

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

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

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

✅ Clean layout: Consistent left alignment throughout.

GGoogle Fonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

TaboolaMid-Market

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)connect.facebook.net(3)youtube.com(2)api.receptivity.io(1)static.kueezrtb.com(1)

Website Identity

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 20 Feb 2026 at 00:14

Historical Analysis & Change Tracking